A control method, apparatus, air conditioning system, and storage medium for an air conditioning system.

Abstract

This invention discloses a control method, device, air conditioning system, and storage medium for an air conditioning system. The method includes: if the air conditioning system is powered by mains electricity, then based on the preset parameters of the unit's current limiting current under the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted to obtain the corrected upper limit frequency of the compressor under the current operating mode and the adjusted current frequency of the compressor; if the air conditioning system is powered by a generator, then based on the current input voltage of the air conditioning system, the preset parameters of the unit's current limiting current under the current operating mode are corrected to obtain the corrected preset parameters of the unit's current limiting current under the current operating mode. This solution ensures the normal operation of the air conditioning system by correcting the maximum allowable current value of the unit and the upper limit frequency of the compressor according to the power supply conditions.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning system technology, specifically relating to a control method, device, air conditioning system and storage medium for an air conditioning system, and particularly to a method, device, air conditioning system and storage medium for automatically adjusting the upper limit of compressor frequency according to power supply. Background Technology

[0002] In many areas and places with power shortages, generators are typically used to supply electricity to ensure the normal operation of electrical appliances. However, household generators are usually of relatively low power, often resulting in mismatches between the generator selection and the air conditioning system's capacity, or generator tripping when the air conditioning system and other electrical equipment are used simultaneously. This leads to the air conditioning system and other electrical equipment not functioning properly or being used simultaneously, ultimately disrupting people's daily lives.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a control method, device, air conditioning system, and storage medium for an air conditioning system, in order to solve the problems that occur when the air conditioning system is powered by a generator. These problems include generator tripping due to mismatch between the generator selection and the power of the air conditioning system, or the air conditioning system being powered by other electrical devices at the same time, which affects the normal use of the air conditioning system by the user. The invention also addresses the issues of unsuitable generator selection and insufficient power output leading to the air conditioning system's inability to operate normally. The invention aims to ensure the normal operation of the air conditioning system by correcting the maximum allowable current value of the entire unit and the upper limit of the compressor frequency according to the power supply conditions of the air conditioning system.

[0005] This invention provides a control method for an air conditioning system, comprising: after the compressor of the air conditioning system starts, determining the current operating mode of the air conditioning system; determining a preset parameter for the overall current limiting of the air conditioning system under the current operating mode, denoted as the preset parameter for the overall current limiting of the air conditioning system under the current operating mode; and determining the upper limit frequency of the compressor of the air conditioning system, denoted as the upper limit frequency of the compressor under the current operating mode; acquiring the current overall current of the air conditioning system, acquiring the current input voltage of the air conditioning system, the current frequency of the compressor of the air conditioning system, and acquiring the current outdoor ambient temperature of the air conditioning system; and determining the power supply mode of the air conditioning system; wherein, the power supply mode of the air conditioning system is generator power supply or mains power supply; if the air conditioning system If the system is powered by AC mains, the compressor's upper limit frequency is corrected based on the preset parameters of the unit's current limit under the current operating mode, combined with the current unit current and the current outdoor ambient temperature of the air conditioning system. The compressor's current frequency is also adjusted to control the air conditioning system to continue operating at the corrected compressor upper limit frequency and the adjusted compressor current frequency under the current operating mode. If the air conditioning system is powered by a generator, the preset parameters of the unit's current limit under the current operating mode are corrected based on the current input voltage of the air conditioning system to control the air conditioning system to continue operating at the corrected preset parameters of the unit's current limit under the current operating mode.

[0006] In some implementations, the preset parameter for the overall unit current limit in the current operating mode includes: a first preset value for the overall unit shutdown current in the current operating mode; based on the preset parameter for the overall unit current limit in the current operating mode, combined with the current overall unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted, including: determining whether the current overall unit current of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode; if it is determined that the current overall unit current of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode, then control... The compressor shutdown protection; after the compressor exits the shutdown protection, the upper limit frequency of the compressor in the current operating mode is controlled to decrease by a preset frequency value to correct the upper limit frequency of the compressor in the current operating mode; after correcting the upper limit frequency of the compressor in the current operating mode, it is determined whether the cumulative running time of the compressor is greater than a preset time, or whether the temperature difference between the current outdoor ambient temperature of the air conditioning system and the current outdoor ambient temperature of the air conditioning system before the first set time is greater than a preset temperature value; if satisfied, the correction of the upper limit frequency of the compressor in the current operating mode is stopped; if not satisfied, the process returns to redetermine the power supply mode of the air conditioning system.

[0007] In some embodiments, the preset parameter for the unit limiting current in the current operating mode further includes: a second preset value for the unit frequency reduction current in the current operating mode, and a third preset value for the unit frequency limiting current in the current operating mode; wherein, the first preset value for the unit shutdown current in the current operating mode > the second preset value for the unit frequency reduction current in the current operating mode, and the second preset value for the unit frequency reduction current in the current operating mode > the third preset value for the unit frequency limiting current in the current operating mode; based on the preset parameter for the unit limiting current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted, including: if it is determined that the current unit current of the air conditioning system is less than the first preset value for the unit shutdown current in the current operating mode, then it is determined whether the current unit current of the air conditioning system is greater than or equal to the third preset value for the unit frequency limiting current in the current operating mode, and whether the current unit current of the air conditioning system is less than the third preset value for the unit frequency limiting current in the current operating mode. The system determines the following: If the current overall current of the air conditioning system is greater than or equal to the second preset value of the overall frequency reduction current in the current operating mode, the current frequency of the compressor is reduced until the phase current value of the compressor is reduced to the preset exit phase current frequency reduction protection mode; then, the system returns to redetermine the power supply mode of the air conditioning system. If the current overall current of the air conditioning system is greater than or equal to the third preset value of the overall frequency limiting current in the current operating mode and less than the second preset value of the overall frequency reduction current in the current operating mode, the compressor is controlled to maintain its current frequency operation and the current frequency of the compressor is limited from increasing; then, the system returns to redetermine the power supply mode of the air conditioning system. If the current overall current of the air conditioning system is less than the third preset value of the overall frequency limiting current in the current operating mode, the current frequency of the compressor is adjusted to the target frequency of the compressor, the compressor is controlled to operate at the target frequency of the compressor, and the target frequency of the compressor is allowed to increase; then, the system returns to redetermine the power supply mode of the air conditioning system.

[0008] In some implementations, the preset parameter for the unit limiting current in the current operating mode is corrected based on the current input voltage of the air conditioning system. This includes: determining whether there is a current maximum limiting current value for the air conditioning system; if there is a current maximum limiting current value for the air conditioning system, then the preset parameter for the unit limiting current in the current operating mode is first corrected based on the current maximum limiting current value of the air conditioning system; then, the preset parameter for the unit limiting current in the current operating mode is second corrected based on the current input voltage of the air conditioning system; if there is no current maximum limiting current value for the air conditioning system, then the preset parameter for the unit limiting current in the current operating mode is second corrected based on the current input voltage of the air conditioning system.

[0009] In some implementations, determining whether there is a current maximum current limiting value for the air conditioning system includes: determining whether the input maximum current limiting mode of the air conditioning system is enabled; wherein, the input maximum current limiting mode of the air conditioning system is a mode that allows the user to input the maximum current limiting value of the air conditioning system; if it is determined that the input maximum current limiting mode of the air conditioning system is enabled, then it is determined that there is a current maximum current limiting value for the air conditioning system; and receiving the maximum current limiting value of the air conditioning system input by the user as the current maximum current limiting value of the air conditioning system; if it is determined that the input maximum current limiting mode of the air conditioning system is not enabled, then it is determined whether the air conditioning system has experienced a power outage: if so, then it is determined that there is a current maximum current limiting value for the air conditioning system, and the maximum value of the total current of the air conditioning system before the power outage and shutdown is taken as the current maximum current limiting value of the air conditioning system; otherwise, it is determined that there is no current maximum current limiting value for the air conditioning system.

[0010] In some embodiments, the preset parameter for the overall unit limiting current in the current operating mode includes: a first preset value for the overall unit shutdown current in the current operating mode, a second preset value for the overall unit frequency reduction current in the current operating mode, and a third preset value for the overall unit frequency limiting current in the current operating mode; wherein, the first preset value for the overall unit shutdown current in the current operating mode > the second preset value for the overall unit frequency reduction current in the current operating mode, and the second preset value for the overall unit frequency reduction current in the current operating mode > the third preset value for the overall unit frequency limiting current in the current operating mode; based on the current maximum limiting current value of the air conditioning system, a first correction is made to the preset parameter for the overall unit limiting current in the current operating mode, including: determining whether the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode; if it is determined that the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode; If the first preset value of the unit shutdown current under the formula is used, then the preset parameter of the unit limiting current in the current operating mode is modified according to the current input voltage of the air conditioning system. If it is determined that the current maximum limiting current value of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, then the first preset value of the unit shutdown current in the current operating mode is updated to the current maximum limiting current value of the air conditioning system, and the second preset value of the unit frequency reduction current in the current operating mode is updated to the difference between the current maximum limiting current value and the first preset current value. The third preset value of the unit frequency limiting current in the current operating mode is updated to the difference between the current maximum limiting current value and the second preset current value. Then, the preset parameter of the unit limiting current in the current operating mode is modified according to the current input voltage of the air conditioning system. Wherein, the first preset current value is less than the second preset current value.

[0011] In some embodiments, a second correction is made to the preset parameter of the unit limiting current in the current operating mode based on the current input voltage of the air conditioning system. This includes: determining whether the current input voltage of the air conditioning system is less than a fourth preset value; if the current input voltage of the air conditioning system is greater than or equal to the fourth preset value, then based on the preset parameter of the unit limiting current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted; if the current input voltage of the air conditioning system is less than the fourth preset value, then within a second set time period, the rate of decrease of the current input voltage of the air conditioning system is determined; and based on the rate of decrease of the current input voltage of the air conditioning system, the preset parameter of the unit limiting current in the current operating mode is corrected for the second time.

[0012] In some embodiments, the preset parameter for the overall unit current limiting in the current operating mode further includes: an overall unit shutdown current range; the overall unit shutdown current range includes: an overall unit shutdown first current range, an overall unit shutdown second current range, an overall unit shutdown third current range, an overall unit shutdown fourth current range, an overall unit shutdown fifth current range, an overall unit shutdown sixth current range, an overall unit shutdown seventh current range, and an overall unit shutdown eighth current range, with the current range increasing sequentially; the preset parameter for the overall unit current limiting in the current operating mode is further corrected according to the rate of decrease of the current input voltage of the air conditioning system. This includes: determining whether the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value; if the rate of decrease of the current input voltage of the air conditioning system is greater than the fifth preset value, then determining the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system, and controlling the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system to decrease according to a first set downshifting rate, so as to correct the current maximum limiting current value of the air conditioning system until the phase current value of the compressor meets the requirements to exit the unit shutdown current level downshifting protection mode; and then, according to the first set downshifting rate... After the unit shutdown current level corresponding to the current maximum limit current value of the air conditioning system is reduced by the fixed downshift rate control, it is determined whether the unit shutdown current level downshift protection mode has been exited. If it is determined that the unit shutdown current level downshift protection mode has not been exited, it returns to the previous step to re-determine whether the current input voltage reduction rate of the air conditioning system is greater than a fifth preset value. If it is determined that the unit shutdown current level downshift protection mode has been exited, the current maximum limit current value of the air conditioning system is reduced to a third preset current value. Then, it is determined whether the cumulative running time of the compressor is greater than a preset time, or whether the voltage difference between the current input voltage of the air conditioning system and the current input voltage of the air conditioning system before the third preset time is greater than a preset voltage value. If yes, the correction of the current maximum limit current value of the air conditioning system is stopped. Otherwise, it returns to the previous step to correct the upper limit frequency of the compressor in the current operating mode based on the preset parameters of the unit limit current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjust the current frequency of the compressor.

[0013] In some implementations, the second correction of the preset parameter for the unit limiting current in the current operating mode based on the rate of decrease of the current input voltage of the air conditioning system further includes: if it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than or equal to a fifth preset value, then determining whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to a sixth preset value; if it is determined that the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to the sixth preset value, then determining the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system, and controlling the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system to decrease according to a second set downshift rate, and then returning to the previous state, so as to combine the preset parameter for the unit limiting current in the current operating mode with the current unit current of the air conditioning system. The system uses the current outdoor ambient temperature of the air conditioning system to correct the upper limit frequency of the compressor in the current operating mode and adjust the current frequency of the compressor. The second preset downshift rate is less than the first preset downshift rate. If the rate of decrease of the current input voltage of the air conditioning system is determined to be less than a sixth preset value, the system maintains the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system unchanged and limits the increase of the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system. Then, it returns to the previous state to correct the upper limit frequency of the compressor in the current operating mode based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjust the current frequency of the compressor.

[0014] In conjunction with the above method, another aspect of the present invention provides a control device for an air conditioning system, comprising: a control unit configured to determine the current operating mode of the air conditioning system after the compressor of the air conditioning system is started; the control unit is further configured to determine, under the current operating mode of the air conditioning system, a preset parameter for the overall current limiting of the air conditioning system, denoted as the preset parameter for the overall current limiting of the air conditioning system under the current operating mode; and to determine the upper limit frequency of the compressor of the air conditioning system, denoted as the upper limit frequency of the compressor under the current operating mode; an acquisition unit configured to acquire the current overall current of the air conditioning system, the current input voltage of the air conditioning system, the current frequency of the compressor of the air conditioning system, and the current outdoor ambient temperature of the air conditioning system; the control unit is further configured to determine the power supply mode of the air conditioning system; wherein, the power supply mode of the air conditioning system is a generator... The air conditioning system is powered by either an electric motor or mains power. The control unit is further configured to, if the air conditioning system is powered by mains power, correct the compressor's upper limit frequency under the current operating mode based on the preset parameters of the unit's current limit, combined with the current unit current and the current outdoor ambient temperature of the air conditioning system, and adjust the compressor's current frequency to control the air conditioning system to continue operating at the corrected compressor upper limit frequency and the adjusted compressor current frequency under the current operating mode. The control unit is also configured to, if the air conditioning system is powered by a generator, correct the preset parameters of the unit's current limit based on the current input voltage of the air conditioning system to control the air conditioning system to continue operating at the corrected preset parameters of the unit's current limit.

[0015] In some implementations, the preset parameter for the overall unit current limit in the current operating mode includes: a first preset value for the overall unit shutdown current in the current operating mode; the control unit, based on the preset parameter for the overall unit current limit in the current operating mode, combined with the current overall unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, corrects the upper limit frequency of the compressor in the current operating mode and adjusts the current frequency of the compressor, including: determining whether the current overall unit current of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode; if it is determined that the current overall unit current of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode, The compressor is then controlled to shut down for protection. After the compressor exits the shutdown protection, the compressor's upper limit frequency in the current operating mode is reduced by a preset frequency value to correct the compressor's upper limit frequency in the current operating mode. After correcting the compressor's upper limit frequency in the current operating mode, it is determined whether the cumulative operating time of the compressor is greater than a preset time, or whether the temperature difference between the current outdoor ambient temperature of the air conditioning system and the current outdoor ambient temperature of the air conditioning system before the first set time is greater than a preset temperature value. If these conditions are met, the correction of the compressor's upper limit frequency in the current operating mode is stopped. If these conditions are not met, the process returns to the previous step to redetermine the power supply mode of the air conditioning system.

[0016] In some embodiments, the preset parameter for the unit limiting current in the current operating mode further includes: a second preset value for the unit frequency reduction current in the current operating mode, and a third preset value for the unit frequency limiting current in the current operating mode; wherein, the first preset value for the unit shutdown current in the current operating mode > the second preset value for the unit frequency reduction current in the current operating mode, and the second preset value for the unit frequency reduction current in the current operating mode > the third preset value for the unit frequency limiting current in the current operating mode; the control unit, based on the preset parameter for the unit limiting current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, corrects the upper limit frequency of the compressor in the current operating mode, and adjusts the current frequency of the compressor, including: if it is determined that the current unit current of the air conditioning system is less than the first preset value for the unit shutdown current in the current operating mode, then it determines whether the current unit current of the air conditioning system is greater than or equal to the third preset value for the unit frequency limiting current in the current operating mode, and determines whether the current unit current of the air conditioning system is less than the third preset value for the current operating mode. If the current overall current of the air conditioning system is greater than or equal to the second preset value of the overall frequency reduction current in the current operating mode, the current frequency of the compressor is controlled to decrease until the phase current value of the compressor decreases to the preset exit phase current frequency reduction protection mode; then, the process returns to redetermine the power supply mode of the air conditioning system; if the current overall current of the air conditioning system is greater than or equal to the third preset value of the overall frequency limiting current in the current operating mode and less than the second preset value of the overall frequency reduction current in the current operating mode, the compressor is controlled to maintain the current frequency of the compressor and the current frequency of the compressor is limited to increase; then, the process returns to redetermine the power supply mode of the air conditioning system; if the current overall current of the air conditioning system is less than the third preset value of the overall frequency limiting current in the current operating mode, the current frequency of the compressor is adjusted to the target frequency of the compressor, the compressor is controlled to operate at the target frequency of the compressor, and the target frequency of the compressor is allowed to increase; then, the process returns to redetermine the power supply mode of the air conditioning system.

[0017] In some embodiments, the control unit corrects the preset parameter of the whole unit limiting current in the current operating mode based on the current input voltage of the air conditioning system, including: determining whether there is a current maximum limiting current value of the air conditioning system; if it is determined that there is a current maximum limiting current value of the air conditioning system, then correcting the preset parameter of the whole unit limiting current in the current operating mode based on the current maximum limiting current value of the air conditioning system; then, correcting the preset parameter of the whole unit limiting current in the current operating mode based on the current input voltage of the air conditioning system; if it is determined that there is no current maximum limiting current value of the air conditioning system, then correcting the preset parameter of the whole unit limiting current in the current operating mode based on the current input voltage of the air conditioning system.

[0018] In some embodiments, the control unit determines whether there is a current maximum current limiting value for the air conditioning system, including: determining whether the input maximum current limiting mode of the air conditioning system is enabled; wherein, the input maximum current limiting mode of the air conditioning system is a mode that allows the user to input the maximum current limiting value of the air conditioning system; if it is determined that the input maximum current limiting mode of the air conditioning system is enabled, then it is determined that there is a current maximum current limiting value for the air conditioning system; and receiving the maximum current limiting value of the air conditioning system input by the user as the current maximum current limiting value of the air conditioning system; if it is determined that the input maximum current limiting mode of the air conditioning system is not enabled, then it is determined whether the air conditioning system has experienced a power outage: if so, then it is determined that there is a current maximum current limiting value for the air conditioning system, and the maximum value of the total current of the air conditioning system before the power outage and shutdown is taken as the current maximum current limiting value of the air conditioning system; otherwise, it is determined that there is no current maximum current limiting value for the air conditioning system.

[0019] In some embodiments, the preset parameter for the overall unit limiting current in the current operating mode includes: a first preset value for the overall unit shutdown current in the current operating mode, a second preset value for the overall unit frequency reduction current in the current operating mode, and a third preset value for the overall unit frequency limiting current in the current operating mode; wherein, the first preset value for the overall unit shutdown current in the current operating mode > the second preset value for the overall unit frequency reduction current in the current operating mode, and the second preset value for the overall unit frequency reduction current in the current operating mode > the third preset value for the overall unit frequency limiting current in the current operating mode; the control unit performs a first correction on the preset parameter for the overall unit limiting current in the current operating mode based on the current maximum limiting current value of the air conditioning system, including: determining whether the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode; if it is determined that the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value for the overall unit shutdown current in the current operating mode; If the first preset value of the unit shutdown current in the previous operating mode is used, then the preset parameter of the unit limiting current in the current operating mode is modified according to the current input voltage of the air conditioning system. If it is determined that the current maximum limiting current value of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, then the first preset value of the unit shutdown current in the current operating mode is updated to the current maximum limiting current value of the air conditioning system, and the second preset value of the unit frequency reduction current in the current operating mode is updated to the difference between the current maximum limiting current value and the first preset current value. The third preset value of the unit frequency limiting current in the current operating mode is also updated to the difference between the current maximum limiting current value and the second preset current value. Then, the preset parameter of the unit limiting current in the current operating mode is modified according to the current input voltage of the air conditioning system. Wherein, the first preset current value is less than the second preset current value.

[0020] In some embodiments, the control unit performs a second correction on the preset parameter of the unit limiting current in the current operating mode based on the current input voltage of the air conditioning system. This includes: determining whether the current input voltage of the air conditioning system is less than a fourth preset value; if the current input voltage of the air conditioning system is greater than or equal to the fourth preset value, then, based on the preset parameter of the unit limiting current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, correcting the upper limit frequency of the compressor in the current operating mode, and adjusting the current frequency of the compressor; if the current input voltage of the air conditioning system is less than the fourth preset value, then, within a second set time period, determining the rate of decrease of the current input voltage of the air conditioning system; and, based on the rate of decrease of the current input voltage of the air conditioning system, performing a second correction on the preset parameter of the unit limiting current in the current operating mode.

[0021] In some embodiments, the preset parameter for limiting the overall current in the current operating mode further includes: an overall shutdown current range; the overall shutdown current range includes: an overall shutdown first current range, an overall shutdown second current range, an overall shutdown third current range, an overall shutdown fourth current range, an overall shutdown fifth current range, an overall shutdown sixth current range, an overall shutdown seventh current range, and an overall shutdown eighth current range, with the current range increasing sequentially; the control unit adjusts the preset parameter for limiting the overall current in the current operating mode according to the rate of decrease of the current input voltage of the air conditioning system. The second correction includes: determining whether the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value; if the rate of decrease of the current input voltage of the air conditioning system is greater than the fifth preset value, then determining the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system, and controlling the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system to decrease according to the first set downshift rate, so as to correct the current maximum limiting current value of the air conditioning system until the phase current value of the compressor meets the requirements to exit the unit shutdown current level downshift protection mode; and then... After the first set downshift rate control reduces the unit shutdown current level corresponding to the current maximum limit current value of the air conditioning system, it is determined whether the unit shutdown current level downshift protection mode has been exited. If it is determined that the unit shutdown current level downshift protection mode has not been exited, it returns to the previous step to re-determine whether the current input voltage reduction rate of the air conditioning system is greater than a fifth preset value. If it is determined that the unit shutdown current level downshift protection mode has been exited, the current maximum limit current value of the air conditioning system is reduced to a third preset current value. Then, it is determined whether the cumulative running time of the compressor is greater than a preset time, or whether the voltage difference between the current input voltage of the air conditioning system and the current input voltage of the air conditioning system before the third set time is greater than a preset voltage value. If yes, the correction of the current maximum limit current value of the air conditioning system is stopped. Otherwise, it returns to the previous step to correct the upper limit frequency of the compressor in the current operating mode based on the preset parameters of the unit limit current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjust the current frequency of the compressor.

[0022] In some embodiments, the control unit, based on the rate of decrease of the current input voltage of the air conditioning system, performs a second correction on the preset parameter of the unit limiting current in the current operating mode. This further includes: if it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than or equal to a fifth preset value, then determining whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to a sixth preset value; if it is determined that the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to the sixth preset value, then determining the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system, and controlling the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system to decrease according to a second set downshift rate, and then returning to the previous state, so as to combine the preset parameter of the unit limiting current in the current operating mode with the current overall current limiting current of the air conditioning system. The compressor's upper limit frequency in the current operating mode is corrected based on the compressor current and the current outdoor ambient temperature of the air conditioning system, and the compressor's current frequency is adjusted. The second preset downshift rate is less than the first preset downshift rate. If the rate of decrease of the current input voltage of the air conditioning system is determined to be less than a sixth preset value, the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system remains unchanged, and the increase of the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system is restricted. Then, the process returns to the previous state, using the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, to correct the compressor's upper limit frequency in the current operating mode and adjust the compressor's current frequency.

[0023] In conjunction with the above-described device, the present invention further provides an air conditioning system, comprising: the control device for the air conditioning system described above.

[0024] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located controls the execution of the control method of the air conditioning system described above.

[0025] Therefore, the solution of the present invention, when the power supply mode of the air conditioning system is generator-powered, corrects the unit frequency limiting current, unit frequency reduction current, unit shutdown current, and compressor frequency upper limit of the air conditioning system by combining the maximum limiting current input by the user or the maximum limiting current intelligently detected by the air conditioning system and the input voltage of the entire air conditioning system; when the power supply mode of the air conditioning system is AC power-powered, the compressor frequency upper limit is corrected according to the unit current of the air conditioning system; thus, by correcting the maximum allowable current value of the entire unit and the compressor frequency upper limit according to the power supply status of the air conditioning system, the normal operation of the air conditioning system is guaranteed.

[0026] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0027] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] Figure 1 This is a flowchart illustrating an embodiment of the control method for an air conditioning system according to the present invention;

[0029] Figure 2 This is a flowchart illustrating an embodiment of the first control process in the method of the present invention when the mains power supply is supplied and the current total current of the air conditioning system is greater than or equal to a first preset value of the total shutdown current in the current operating mode.

[0030] Figure 3 This is a flowchart illustrating an embodiment of the second control process in the method of the present invention when the current total current of the air conditioning system is less than a first preset value of the total shutdown current under the current operating mode during mains power supply.

[0031] Figure 4 A flowchart illustrating an embodiment of the method of the present invention, in which the preset parameters of the whole machine limiting current under the current operating mode are corrected according to the current input voltage of the air conditioning system when the generator is supplying power;

[0032] Figure 5 A flowchart illustrating an embodiment of the method of the present invention for determining whether the current maximum limiting current value of the air conditioning system is present when the generator supplies power;

[0033] Figure 6 A flowchart illustrating an embodiment of the method of the present invention, in which the preset parameters of the whole machine limiting current under the current operating mode are first modified according to the current maximum limiting current value of the air conditioning system when the generator is supplying power;

[0034] Figure 7 A flowchart illustrating an embodiment of the method of the present invention, in which the preset parameters of the whole machine limiting current under the current operating mode are secondly modified based on the current input voltage of the air conditioning system when the generator is supplying power;

[0035] Figure 8 This is a flowchart illustrating an embodiment of the first process in the method of the present invention, which controls the shutdown current level of the entire unit based on the rate of decrease of the current input voltage of the air conditioning system when the generator is supplying power.

[0036] Figure 9This is a flowchart illustrating an embodiment of the second process in the method of the present invention, in which the shutdown current level of the entire unit is controlled according to the rate of decrease of the current input voltage of the air conditioning system when the generator is supplying power.

[0037] Figure 10 This is a schematic diagram of the structure of an embodiment of the control device for the air conditioning system of the present invention;

[0038] Figure 11 A schematic diagram of one embodiment of a remote control for an air conditioning system;

[0039] Figure 12 A flowchart illustrating an embodiment of the control logic for a remote control of an air conditioning system;

[0040] Figure 13 A flowchart illustrating an embodiment of the step-by-step control logic for overall current control of an air conditioning system;

[0041] Figure 14 A flowchart illustrating an embodiment of the control logic for a preset air conditioning system shutdown current control level;

[0042] Figure 15 A flowchart illustrating an embodiment of the control logic of the overall control section of an air conditioning system;

[0043] Figure 16 A flowchart illustrating an embodiment of the control logic for an air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply. Figure 1 ;

[0044] Figure 17 A flowchart illustrating an embodiment of the control logic for an air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply. Figure 2 .

[0045] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0046] 102 - Acquisition unit; 104 - Control unit. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0048] Considering that when an air conditioning system is powered by a generator, mismatch between the generator selection and the air conditioning system's power capacity, or simultaneous power consumption by the air conditioning system and other electrical appliances, can cause the generator to trip, affecting normal use of the air conditioning system and resulting in poor power supply reliability for users, the proposed solution addresses this issue by collecting the input voltage of the variable frequency air conditioning system and combining it with the outdoor temperature to determine the compressor's frequency range. This resolves the reliability problem caused by excessively high temperatures of power devices during low-pressure operation of the air conditioning system.

[0049] However, the relevant solutions mainly consider the situation where the current increases due to the decrease in voltage when the input power is constant. They do not take into account the tripping problem caused by the power supply being insufficient to support the full-load operation of the air conditioning system under normal conditions as the power of the air conditioning system gradually increases. Therefore, there are still shortcomings in terms of power supply adaptability.

[0050] Therefore, the present invention proposes a control method for an air conditioning system, specifically a scheme for automatically adjusting the upper limit of the compressor frequency based on the power supply. This scheme allows the user to preset the upper limit of the current on the remote control based on the generator's maximum output current, or to correct the maximum allowable current value of the entire air conditioning system and the upper limit of the compressor frequency based on the voltage and current values ​​before the power supply trips. Simultaneously, by detecting the compressor's input voltage and determining the power supply status, the maximum allowable current value of the entire air conditioning system is determined based on the range of the compressor's input voltage. By using the maximum allowable current value of the entire air conditioning system to limit the upper limit of the compressor frequency, the method avoids generator tripping that could affect the user's normal use of the air conditioning system, thereby improving the reliability of the power supply when the user uses the air conditioning system.

[0051] According to embodiments of the present invention, a control method for an air conditioning system is provided, such as... Figure 1 The diagram shows a flowchart of an embodiment of the method of the present invention. The control method of the air conditioning system may include steps S110 to S160.

[0052] In step S110, after the compressor of the air conditioning system is started, the current operating mode of the air conditioning system is determined; wherein, the current operating mode of the air conditioning system is either heating mode or cooling mode.

[0053] In step S120, under the current operating mode of the air conditioning system, the preset parameter of the whole unit limiting current of the air conditioning system is determined and recorded as the preset parameter of the whole unit limiting current under the current operating mode; and under the current operating mode of the air conditioning system, the upper limit frequency of the compressor of the air conditioning system is determined and recorded as the upper limit frequency of the compressor under the current operating mode.

[0054] In step S130, under the current operating mode of the air conditioning system, the current total current of the air conditioning system, the current input voltage of the air conditioning system, the current frequency of the compressor of the air conditioning system, and the current outdoor ambient temperature of the air conditioning system are obtained.

[0055] In step S140, under the current operating mode of the air conditioning system, the power supply method of the air conditioning system is determined; wherein, the power supply method of the air conditioning system is either generator power supply or mains power supply. For example, the power supply method of the air conditioning system can be determined by whether the generator function mode control button on the remote control of the air conditioning system is pressed; if so, it is generator power supply; otherwise, it is mains power supply.

[0056] In step S150, under the current operating mode of the air conditioning system, if the power supply method of the air conditioning system is mains power, then under the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is mains power, based on the preset parameter of the whole unit current limit under the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted, so as to control the air conditioning system to continue to operate at the corrected upper limit frequency of the compressor under the current operating mode and the adjusted current frequency of the compressor, thereby realizing the control of the power supply reliability of the air conditioning system.

[0057] In some implementations, the preset parameter for limiting the overall current in the current operating mode includes: a first preset value for the shutdown current of the overall machine in the current operating mode.

[0058] In step S150, under the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, based on the preset parameters of the whole unit current limit under the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted. This includes: a first control process when the current whole unit current of the air conditioning system is greater than or equal to the first preset value of the whole unit shutdown current under the current operating mode when AC power is supplied.

[0059] The following is combined Figure 2The flowchart shown is an embodiment of the first control process in the method of the present invention when the mains power supply is provided and the current unit current of the air conditioning system is greater than or equal to the first preset value of the unit shutdown current in the current operating mode. The flowchart further illustrates the specific process of the first control process in step S150 when the mains power supply is provided and the current unit current of the air conditioning system is greater than or equal to the first preset value of the unit shutdown current in the current operating mode, including steps S210 to S260.

[0060] Step S210: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is mains power supply, determine whether the current total current of the air conditioning system is greater than or equal to the first preset value of the total shutdown current in the current operating mode.

[0061] Step S220: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is mains power supply, if it is determined that the current total current of the air conditioning system is greater than or equal to the first preset value of the total shutdown current in the current operating mode, then the compressor shutdown protection is controlled.

[0062] Step S230: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power, after the compressor exits the shutdown protection, the upper limit frequency of the compressor in the current operating mode is controlled to decrease by a preset frequency value to correct the upper limit frequency of the compressor in the current operating mode. The preset frequency value is, for example, the frequency... P.

[0063] Step S240: In the current operating mode of the air conditioning system, and when the power supply mode of the air conditioning system is AC power, after correcting the upper limit frequency of the compressor in the current operating mode, specifically after controlling the upper limit frequency of the compressor in the current operating mode to decrease by a preset frequency value, it is determined whether the cumulative operating time of the compressor is greater than a preset time, or whether the temperature difference between the current outdoor ambient temperature of the air conditioning system and the current outdoor ambient temperature of the air conditioning system before the first set time is greater than a preset temperature value.

[0064] Step S250: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power, if the conditions are met, then stop correcting the upper limit frequency of the compressor in the current operating mode, that is, stop controlling the compressor upper limit frequency in the current operating mode to decrease by the preset frequency value.

[0065] Step S260: In the current operating mode of the air conditioning system, and if the power supply method of the air conditioning system is AC power, if the conditions are not met, return to the previous step to redetermine the power supply method of the air conditioning system in the current operating mode of the air conditioning system.

[0066] Specifically, Figure 16 A flowchart illustrating an embodiment of the control logic for an air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply. Figure 1 , Figure 17 A flowchart illustrating an embodiment of the control logic for an air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply. Figure 2 .like Figure 16 and Figure 17 As shown, the control logic of the air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply includes:

[0067] Step 31: The compressor is switched from the off state to the on state, and then step 32 is executed.

[0068] Step 32: Obtain the overall operating mode. Specifically, this can be done by obtaining remote control information, determining whether the remote control command indicates that the generator function is on or off, and then proceeding to step 33.

[0069] Step 33: Determine if it is generator function mode control: If it is not generator function mode control, proceed to step 34 to control in normal mode; if it is generator function mode control, proceed to step 35 to control in generator function mode. In this step, determine whether the command given by the remote control is to turn the generator function on or off.

[0070] Step 34: If the unit does not receive the instruction to open the generator function mode, the unit will be controlled in normal mode. For details, please refer to steps 41, 42, 43 and 44.

[0071] Step 41: Determine whether the overall machine current I is greater than or equal to the first preset value of the overall machine shutdown current. If yes, proceed to steps 441 and 442; otherwise, proceed to steps 42, 43, and 44.

[0072] Step 441: If the total unit current I ≥ the first preset value of the total unit shutdown current (for example, in the case given above, this value can be set to 16A), the compressor will initiate shutdown protection. After the compressor stops, determine whether the entire unit meets the conditions for exiting the total unit current shutdown protection: if it does, then exit the shutdown protection; otherwise, continue waiting and determine whether the entire unit meets the conditions for exiting the total unit current shutdown protection. Simultaneously with exiting the shutdown protection, under the corresponding operating conditions of the corresponding mode (such as heating mode or cooling mode): the compressor's upper limit frequency decreases. P( P is the program's default value (for example: P can be between 2Hz and 10Hz. At this point, it indicates that the overall current is relatively high, triggering the protection red line. The machine needs to be shut down to reduce the pressure on the entire unit and the temperature rise of its components, ensuring the reliability of the entire machine. Simultaneously, to prevent repeated impacts of high current on the motherboard, the upper limit frequency of the compressor is adjusted downwards, lowering the maximum target frequency to avoid the compressor and motherboard being subjected to high current again after the machine starts, thus preventing frequent protection activation.

[0073] Step 442: Reduce the compressor's upper limit frequency. After P, the compressor's running time is timed. If the running time ≥ t (preset value) (e.g., t can be 0.5~5 hours) or the outdoor ambient temperature change ≥ T (for example: T can be 2~10℃), then the compressor frequency will be reduced. P is corrected; otherwise, continue from step 32 to re-determine the overall machine current. At this point, to ensure performance, after running for a period of time or when the ambient temperature changes significantly, first disable the compressor frequency adjustment. P correction. Then reconfirm whether the overall current value is still very high and whether the abnormal situation has disappeared.

[0074] In some embodiments, the preset parameter for limiting the overall current in the current operating mode further includes: a second preset value for the frequency reduction current of the overall system in the current operating mode, and a third preset value for the frequency limiting current of the overall system in the current operating mode; wherein, the first preset value for the shutdown current of the overall system in the current operating mode > the second preset value for the frequency reduction current of the overall system in the current operating mode, and the second preset value for the frequency reduction current of the overall system in the current operating mode > the third preset value for the frequency limiting current of the overall system in the current operating mode.

[0075] In step S150, under the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, based on the preset parameters of the unit current limit under the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted. This includes a second control process when the current unit current of the air conditioning system is less than the first preset value of the unit shutdown current under the current operating mode when AC power is supplied.

[0076] The following is combined Figure 3The flowchart shown is a schematic diagram of an embodiment of the second control process in the method of the present invention when the mains power supply is provided and the current unit current of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode. The flowchart further illustrates the specific process of the second control process in step S150 when the mains power supply is provided and the current unit current of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, including steps S310 to S340.

[0077] Step S310: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is mains power supply, if it is determined that the current unit current of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, then it is determined whether the current unit current of the air conditioning system is greater than or equal to the third preset value of the unit frequency limiting current in the current operating mode, and whether the current unit current of the air conditioning system is less than the second preset value of the unit frequency reduction current in the current operating mode.

[0078] Step S320: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is mains power supply, if it is determined that the current unit current of the air conditioning system is greater than or equal to the second preset value of the unit frequency reduction current in the current operating mode, then the current frequency of the compressor is controlled to decrease until the phase current value of the compressor decreases to the preset exit phase current frequency reduction protection mode; after exiting the phase current frequency reduction protection mode, return to the current operating mode of the air conditioning system to redetermine the power supply method of the air conditioning system.

[0079] Step S330: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power, if it is determined that the current unit current of the air conditioning system is greater than or equal to the third preset value of the unit frequency limiting current in the current operating mode, and less than the second preset value of the unit frequency reducing current in the current operating mode, then the compressor is controlled to maintain the current frequency of the compressor and the current frequency of the compressor is limited from increasing; then, return to the current operating mode of the air conditioning system to redetermine the power supply method of the air conditioning system.

[0080] Step S340: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power, if it is determined that the current unit current of the air conditioning system is less than the third preset value of the unit frequency limiting current in the current operating mode, then the current frequency of the compressor is adjusted to the target frequency of the compressor, the compressor is controlled to operate at the target frequency of the compressor, and the target frequency of the compressor is allowed to increase; then, return to redetermine the power supply method of the air conditioning system in the current operating mode of the air conditioning system.

[0081] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0082] Step 42: If the second preset value of the overall frequency reduction current (e.g., in the case given above, this value can be set to 14A) ≤ overall current I < first preset value of overall shutdown current, then the compressor frequency is rapidly reduced. For example, the compressor frequency is reduced at a rate of 2Hz / 1s (s is a second). If it is a normal frequency reduction, the frequency reduction rate is 1Hz / 1s (s is a second), until the phase current is reduced to the point where the phase current frequency reduction protection is exited. After exiting the phase current frequency reduction protection, return to step 32 to re-determine the overall current. At this point, it indicates that the overall current value is relatively high. Maintaining the frequency unchanged still cannot alleviate the continued rise in system pressure and current. It is necessary to reduce the overall current value, system pressure, and component temperature rise through rapid frequency reduction to ensure the reliability of the motherboard.

[0083] Step 43: If the third preset value of the overall frequency limiting current (e.g., in the case given above, this value can be set to 12.5A) ≤ overall current I < second preset value of the overall frequency reduction current, then the compressor frequency remains at its current state and is not allowed to increase. Then return to step 32 to re-determine the overall current. At this point, it indicates that the overall current value is relatively high but still within an acceptable range. To ensure performance, the compressor frequency can be maintained at its current frequency. Then, based on the changes in operating pressure, determine whether further intervention in the compressor frequency adjustment is necessary.

[0084] Step 44: If the overall machine current I is less than the third preset value of the overall machine frequency limiting current, the compressor frequency will operate at the target frequency, and an increase is allowed. Then, return to step 32 to re-determine the overall machine current. At this point, it indicates that the compressor phase current value is relatively small. To ensure performance, the compressor frequency is allowed to increase and operate at the target frequency.

[0085] In step S160, under the current operating mode of the air conditioning system, if the power supply method of the air conditioning system is generator power supply, then under the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, the preset parameter of the whole unit limiting current under the current operating mode is corrected according to the current input voltage of the air conditioning system, so as to control the air conditioning system to continue to operate according to the corrected preset parameter of the whole unit limiting current under the current operating mode, thereby realizing the control of the power supply reliability of the air conditioning system.

[0086] This invention proposes a scheme for automatically adjusting the compressor frequency upper limit of an air conditioning system based on power supply conditions. This scheme allows the user to preset the current upper limit on the remote control based on the generator's maximum output current, or to adjust the maximum allowable current value of the entire air conditioning system and the compressor frequency upper limit based on the voltage and current values ​​before a power outage. Simultaneously, by detecting the compressor input voltage and determining the power supply status, the maximum allowable current value of the entire air conditioning system is determined based on the range of the compressor input voltage. By using the maximum allowable current value of the entire air conditioning system to limit the compressor frequency upper limit, the purpose of early intervention in compressor frequency is achieved. Ultimately, this ensures that the generator or power supply does not trip, allowing multiple appliances to be used simultaneously in cases of insufficient power. Therefore, by adjusting the maximum allowable current value of the entire system and the compressor frequency upper limit based on the power supply conditions, this scheme addresses issues related to unsuitable generator selection and power supply limitations. This addresses issues such as insufficient power output causing air conditioning systems to malfunction, including: resolving power outages when the generator is unsuitable or the power supply output is insufficient, leading to the air conditioning system operating at full load based on ambient temperature; resolving power outages when the generator and power supply output can support one air conditioning system at full load but not multiple household appliances operating simultaneously; resolving issues where frequent generator tripping affects generator lifespan and causes malfunctions in electrical components, inconveniencing users; resolving issues where adding another air conditioning system while one is already in use results in limited cooling performance due to voltage and current constraints; and preventing generator tripping from affecting normal air conditioning use, thus improving power supply reliability for users.

[0087] In some embodiments, the specific process of correcting the preset parameter of the whole machine limiting current in the current operating mode of the air conditioning system in step S160, when the power supply mode of the air conditioning system is generator power supply, according to the current input voltage of the air conditioning system, is described in the following exemplary description.

[0088] The following is combined Figure 4 The schematic diagram shows an embodiment of the method of the present invention in which the preset parameters of the whole machine limiting current in the current operating mode are corrected according to the current input voltage of the air conditioning system when the generator is supplying power. It further illustrates the specific process of correcting the preset parameters of the whole machine limiting current in the current operating mode according to the current input voltage of the air conditioning system when the generator is supplying power in step S160, including steps S410 to S430.

[0089] Step S410: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, determine whether there is a current maximum current limit value for the air conditioning system.

[0090] In some embodiments, the specific process of determining whether there is a current maximum current limit value for the air conditioning system in step S410 under the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply is described in the following exemplary description.

[0091] The following is combined Figure 5 The schematic diagram shows an embodiment of the method of the present invention for determining whether the current maximum current limit value of the air conditioning system is present when the generator is supplying power. The specific process of determining whether the current maximum current limit value of the air conditioning system is present when the generator is supplying power in step S410 is further explained, including steps S510 to S530.

[0092] Step S510: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, determine whether the input maximum current limiting mode of the air conditioning system is enabled; wherein, the input maximum current limiting mode of the air conditioning system is a mode that allows the user to input the maximum current limiting value of the air conditioning system.

[0093] Step S520: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the input maximum current limiting mode of the air conditioning system has been turned on, then the current maximum current limiting value of the air conditioning system is determined; and the maximum current limiting value of the air conditioning system input by the user is received as the current maximum current limiting value of the air conditioning system.

[0094] Step S530: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the maximum input current limiting mode of the air conditioning system is not activated, then it is determined whether the air conditioning system has experienced a power outage: if so, then it is determined that there is a current maximum current limiting value of the air conditioning system, and the maximum value of the total current of the air conditioning system before the power outage and shutdown is taken as the current maximum current limiting value of the air conditioning system; otherwise, it is determined that there is no current maximum current limiting value of the air conditioning system.

[0095] Specifically, Figure 11 This is a schematic diagram of one embodiment of a remote control for an air conditioning system. Figure 11 As shown, in the remote control section of the air conditioning system, an independent button or a combination of buttons can be added to the remote control to select whether the generator function is on or off. For example, a T-ON button is used to control the generator function to be on, and a T-OFF button is used to control the generator function to be off. The remote control can perform this operation regardless of whether the air conditioning system is on or off.

[0096] Figure 12 This is a flowchart illustrating an embodiment of the control logic for a remote control of an air conditioning system. The control logic for selecting whether the generator function is on or off using the remote control of the air conditioning system can be found in [reference needed]. Figure 12 The example shown. For example... Figure 12 As shown, the control logic of the air conditioning system remote control includes:

[0097] Step 11: With the remote control powered on, proceed to step 12.

[0098] Step 12: Determine if the generator function is on. If yes, proceed to Step 13 to determine the control scheme for the maximum allowable current. Otherwise, proceed to Step 14 to control the air conditioning system in normal mode. In this step, the user can notify the air conditioning system controller via the T-ON button based on the power supply used by the air conditioning system. The T-ON button setting clarifies whether the generator function is on, and then determines the control scheme for the maximum allowable current. This is combined with... Figure 11 In the example shown, if the T-ON button is pressed, it indicates that the generator function is activated.

[0099] Step 13: If the generator function is enabled, control is performed according to the generator function mode. Then, proceed to step 15 to determine which control scheme to use for the maximum allowable current. In this step, if the generator function is enabled, the power source used by the air conditioning system is assumed to be the generator, and control is performed according to the generator function mode.

[0100] Step 14: If the generator is not activated, control the air conditioning system according to its normal operating mode. In this step, since the generator is not activated, it is assumed that the air conditioning system is using normal grid power supply, and it can be controlled according to the normal operating mode preset by the factory.

[0101] Step 15: When the generator function is activated and controlled in generator function mode, determine if the user is controlling the system in the maximum input current limit mode. If yes, proceed to step 16; otherwise, proceed to step 17. In this step, the user can set the maximum operating current of the air conditioning system based on the generator's maximum allowable current. For example, if the user selects a generator with a low power rating or is unsure whether the selected generator power can support all appliances running simultaneously, the user can set the maximum current limit for the entire unit via remote control. This current value is based on the maximum current indicated on the generator's nameplate. Of course, this mode is not necessary when the mains power supply is normal or when the user knows that the selected generator power is particularly high.

[0102] Step 16: If the maximum current limiting mode is enabled, the user can input the maximum current limiting value. This step allows the user to set the maximum operating current of the air conditioning system based on the generator's maximum allowable current.

[0103] Step 17: If the maximum current limiting mode is not enabled, the air conditioning system will automatically determine the generator's maximum current limiting function based on intelligent control detection. In this step, if the user is unsure about the generator's maximum allowable current, as long as this function is enabled, the air conditioning system will automatically determine the generator's maximum current limiting function based on intelligent control detection.

[0104] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0105] Step 35: If the whole machine receives the instruction to open the generator function mode, the whole machine will be controlled according to the generator function mode. For details, please refer to steps 51 and 52.

[0106] Step 51: First, determine if the user has entered the set maximum current limit value I. 限 If yes, proceed to steps 511, 512, and 513; otherwise, proceed to step 52. The upper limit current control value for each operating condition is determined through this judgment.

[0107] Step 52: If the user has not entered the set maximum current limit value I, then check if the entire unit experiences a sudden power outage, and execute steps 521 and 522 based on the detection results. For example: First, determine if the air conditioner received a remote control shutdown signal; second, determine if the air conditioner triggered a fault protection shutdown signal. If neither of the above two situations exists, then determine if the voltage of the entire unit before shutdown is lower than the fourth preset value. If the voltage of the entire unit before shutdown is lower than the fourth preset value and the unit has shut down, it is determined to be a sudden power outage, indicating that the reason for the shutdown is that the air conditioner's current exceeded the generator's maximum allowable current, causing the generator to trip.

[0108] Step 521: If the entire machine experiences a sudden power outage, obtain the current value detected before the machine stopped as the maximum limiting current value I. 限 Then, it proceeds according to step 51 of the generator function mode control program. This indicates that the generator's capacity is insufficient to meet the maximum operating requirements of the air conditioning system. Intelligent detection can be used to measure the maximum operating current of the air conditioning system, which will be used as the shutdown current value and a reference for subsequent control.

[0109] Step 522: If no sudden power failure is detected in the entire unit, proceed to step 512 of the generator function mode control program. This indicates that the generator's capacity meets the maximum operating requirements of the air conditioning system, and the program can be executed directly.

[0110] In this invention, a new function is added to the remote control, allowing the user to preset a current upper limit based on the generator's maximum output current, or to adjust the maximum allowable current and compressor frequency upper limit based on the voltage and current values ​​before a power outage. Simultaneously, by detecting the compressor's input voltage and determining the power supply status, the maximum allowable current value is determined based on the input voltage range. This solves the problem of the air conditioning system malfunctioning due to unsuitable generator selection or insufficient power output. The remote control is a control method for the air conditioning system; this version adds on / off control for the generator function. When selecting a generator, the selection manual provides a nominal power and maximum allowable current, allowing the user to preset the current upper limit on the remote control based on the generator's maximum output current. Thus, by adding this function to the remote control, allowing the user to preset a current upper limit based on the generator's maximum output current, or to adjust the maximum allowable current and compressor frequency upper limit based on the voltage and current values ​​before a power outage, the problem of the air conditioning system malfunctioning due to unsuitable generator selection or insufficient power output is resolved. In generator mode, the compressor input voltage is detected and the power supply status is determined. The maximum allowable current value of the whole machine is determined based on the range of the input voltage. By limiting the upper limit of the compressor frequency by the maximum allowable current value of the whole machine, the purpose of early intervention is achieved, so as to ensure that the generator or power supply does not trip and that multiple electrical appliances can be used simultaneously when the power supply is insufficient.

[0111] Step S420: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if a current maximum limiting current value of the air conditioning system is determined, the preset parameter of the whole unit limiting current in the current operating mode is first corrected according to the current maximum limiting current value of the air conditioning system; then, the preset parameter of the whole unit limiting current in the current operating mode is second corrected according to the current input voltage of the air conditioning system.

[0112] In some implementations, the preset parameters for the overall machine limiting current in the current operating mode include: a first preset value for the overall machine shutdown current in the current operating mode, a second preset value for the overall machine frequency reduction current in the current operating mode, and a third preset value for the overall machine frequency limiting current in the current operating mode; wherein, the first preset value for the overall machine shutdown current in the current operating mode > the second preset value for the overall machine frequency reduction current in the current operating mode, and the second preset value for the overall machine frequency reduction current in the current operating mode > the third preset value for the overall machine frequency limiting current in the current operating mode.

[0113] In step S420, under the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, the specific process of making a first correction to the preset parameter of the whole machine limiting current under the current operating mode based on the current maximum limiting current value of the air conditioning system is described in the following exemplary description.

[0114] The following is combined Figure 6 The schematic diagram of an embodiment of the method of the present invention, in which the generator supplies power and the preset parameter of the whole machine limiting current in the current operating mode is first modified according to the current maximum limiting current value of the air conditioning system, further illustrates the specific process of the first modification of the preset parameter of the whole machine limiting current in the current operating mode in step S420, which includes steps S610 to S630.

[0115] Step S610: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, determine whether the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value of the whole machine shutdown current in the current operating mode.

[0116] Step S620: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value of the whole machine shutdown current in the current operating mode, then in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, the preset parameter of the whole machine limiting current in the current operating mode is corrected according to the current input voltage of the air conditioning system.

[0117] Step S630: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the current maximum limiting current value of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, then the first preset value of the unit shutdown current in the current operating mode is updated to the current maximum limiting current value of the air conditioning system, and the second preset value of the unit frequency reduction current in the current operating mode is updated to the difference between the current maximum limiting current value and the first preset current value; and the third preset value of the unit frequency limiting current in the current operating mode is updated to the difference between the current maximum limiting current value and the second preset current value; then, in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, the preset parameter of the unit limiting current in the current operating mode is corrected a second time according to the current input voltage of the air conditioning system; wherein, the first preset current value is less than the second preset current value. The first preset current value is as follows: I1, the second preset current value is as follows I2.

[0118] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0119] Step 511: If the user has already entered the set maximum current limit value I 限 Then obtain the maximum current limit value I set via remote control. 限 (For example, following the case given above, this value can be set to ≥16A), and then the maximum current limit value I input by the user. 限 Compare with the first preset value of the overall machine shutdown current:

[0120] ① If the maximum current limit value I is set 限 If the generator's rated power supply capacity meets the maximum operating requirements of the air conditioning system, the air conditioning system can operate according to the preset control values.

[0121] ②If the maximum current limit value I is set 限 If the total unit shutdown current is less than the first preset value, then the program needs to update the preset first preset value of the total unit shutdown current in the air conditioning system program to the set maximum limit current value I. 限 At the same time, update the second preset value of the overall unit frequency reduction current to I. 限 - I1 (for example: I1 can be 1~2A), and the third preset value of the overall frequency limiting current is updated to I. 限 - I2 (for example: I2 can be 1~2A), then proceed to step 512. At this point, it indicates that the rated power supply capacity of the generator cannot meet the maximum operating requirements of the air conditioning system. The air conditioning system must update the shutdown, frequency reduction, and frequency limiting current values ​​of the air conditioning system according to the power supply capacity of the generator in order to control the upper limit frequency of the compressor operation and prevent the generator from tripping.

[0122] In the present invention, the phase current of the air conditioning system is related to the ambient temperature limit in different modes. Specifically, when the ambient temperature is low, the temperature rise of the main board components is low, and the allowable phase current can be higher. As the ambient temperature increases, the phase current value gradually decreases. Since the ambient temperature allowed in the heating mode is lower than that allowed in the cooling mode, the maximum phase current limit under the heating condition is higher than that under the cooling mode.

[0123] Figure 13 This is a flowchart illustrating an embodiment of the step-by-step control logic for overall current control of an air conditioning system. Figure 13 As shown, the step-by-step control logic for the overall current control of the air conditioning system includes: when the overall current gradually increases, if it reaches the slow-increase current, the compressor frequency is allowed to increase slowly. When the overall current continues to increase and reaches the frequency-limiting current, the compressor frequency is not allowed to increase further. When the overall current continues to increase and reaches the frequency-reducing current, the compressor frequency must be rapidly reduced. When the overall current continues to increase and reaches the shutdown current, the compressor shuts down for protection.

[0124] Among these, the overall unit current rise rate is less than the overall unit frequency limiting current, less than the overall unit frequency reduction current, and less than the overall unit shutdown current. However, the overall unit current rise rate, frequency limiting current, frequency reduction current, and shutdown current are related to the capacity of the air conditioning system. For example, a higher system capacity results in a higher current value, and a lower system capacity results in a lower current value. For instance, by setting and controlling the overall unit current value, the maximum frequency limit of the compressor under various conditions can be controlled. Taking models of 7000W and above as an example: frequency rise rate current: 11.5A~13A, frequency limiting current: 12.5A~14A, frequency reduction current: 14A~16A, shutdown current: 16~20A.

[0125] Step S430: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that there is no current maximum current limit value of the air conditioning system, then the preset parameter of the whole machine current limit in the current operating mode is corrected for the second time according to the current input voltage of the air conditioning system.

[0126] Specifically, Figure 15 This is a flowchart illustrating an embodiment of the control logic for the overall control section of an air conditioning system. In the present invention, the control process for the overall control section of the air conditioning system can be found in [reference needed]. Figure 15 The example shown. For example... Figure 15 As shown, the control logic of the overall control section of the air conditioning system includes:

[0127] Step 21: Obtain the overall machine operating mode, then proceed to step 22.

[0128] Step 22: Determine whether the machine is controlled in normal mode or generator mode to select the current control strategy during subsequent operation of the machine, and then proceed to step 23.

[0129] Step 23: Determine the shutdown, frequency reduction, and frequency limiting current values ​​for the entire unit. For details, please refer to [link / reference needed]. Figure 13 The example shown prepares for determining the upper limit frequency of the compressor, after which step 24 is performed.

[0130] Step 24: Obtain the compressor frequency and current value of the air conditioning system, and then proceed to step 25.

[0131] Step 25: Determine whether it is necessary to intervene in the compressor frequency based on the shutdown, frequency reduction, and frequency limiting current values, and then proceed to step 26.

[0132] Step 26: Determine if the air conditioning system has experienced a power outage, then proceed to step 27.

[0133] Step 27: Based on the air conditioning system's operating mode and overall current before the power outage, determine whether the shutdown, frequency reduction, and frequency limiting current values ​​need to be updated, then proceed to step 28. If the air conditioning system was previously operating in generator mode and a sudden power outage occurred, it indicates that the air conditioning system's maximum allowable current exceeds the generator's capacity range. The air conditioning system will automatically confirm the generator's maximum current limit using intelligent control detection and update the shutdown, frequency reduction, and frequency limiting current values ​​to achieve early intervention. The compressor's frequency control will be adjusted based on the updated current limits.

[0134] Step 28: Obtain the input voltage of the entire air conditioning system, and then proceed to step 29.

[0135] Step 29: Determine whether the shutdown current should be maintained or reduced based on the range of the input voltage value. See [link to relevant documentation] for details. Figure 14 In the example shown, proceed to step 30. If the air conditioning system detects a normal or high input voltage, it indicates that the generator's power supply can meet the load's current requirements, and the air conditioning system's shutdown current setting can be maintained. If the air conditioning system detects a low voltage, it indicates that the generator's power supply cannot meet the load's current requirements. To prevent the generator from tripping, the overall shutdown current setting can be lowered to further reduce the maximum operating frequency of the air conditioning system, ensuring that all electrical appliances can operate normally.

[0136] Step 30: Determine whether to exit the current intervention control mode. If, during operation, the conditions for exiting the current intervention control mode are met, then the current intervention control mode is exited. The compressor frequency is controlled according to normal conditions to increase the maximum operating frequency limit of the compressor, thereby improving the comfort of the air conditioning system.

[0137] In some embodiments, the specific process of making a second correction to the preset parameter of the whole machine limiting current in the current operating mode of the air conditioning system in step S420, when the power supply mode of the air conditioning system is generator power supply, based on the current input voltage of the air conditioning system, is described in the following exemplary description.

[0138] The following is combined Figure 7 The schematic diagram of an embodiment of the method of the present invention, in which the generator supplies power and the preset parameters of the whole machine limiting current in the current operating mode are modified according to the current input voltage of the air conditioning system, further illustrates the specific process of modifying the preset parameters of the whole machine limiting current in the current operating mode according to the current input voltage of the air conditioning system in step S420, including steps S710 to S730.

[0139] Step S710: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, determine whether the current input voltage of the air conditioning system is less than the fourth preset value.

[0140] Step S720: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the current input voltage of the air conditioning system is greater than or equal to the fourth preset value, then in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power supply, based on the preset parameter of the whole unit current limit in the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted.

[0141] Step S730: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the current input voltage of the air conditioning system is less than a fourth preset value, then in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, the rate of decrease of the current input voltage of the air conditioning system is determined within a second set time period; and in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, the preset parameter of the whole machine limiting current in the current operating mode is corrected for the second time according to the rate of decrease of the current input voltage of the air conditioning system.

[0142] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0143] Step 512: Obtain the input voltage U of the entire unit through the outdoor unit controller (e.g., U can be 130~280V). By obtaining the input voltage of the entire unit, it can be determined whether the generator is simultaneously supplying power to other power supply equipment during the power supply process, and it can also be determined what the actual voltage obtained by the air conditioning system is.

[0144] Step 513: Compare the input voltage U of the entire machine detected by the external unit controller with the fourth preset value of the program:

[0145] ① If the input voltage U of the entire unit is greater than or equal to the fourth preset value, the program does not need to further correct the shutdown, frequency limiting, and frequency reduction current values ​​of the entire unit. The compressor's frequency control strategy is controlled according to the normal mode control program, i.e., the normal mode control strategy in step 41. The shutdown, frequency limiting, and frequency reduction current values ​​of the entire unit are determined according to the generator function mode control program, i.e., the values ​​determined in step 51. The fourth preset value can be 210~280V. In this case, it indicates that the generator is actually supplying normal voltage to the air conditioning system, suggesting that the generator may only be powering one load of the air conditioning system or may be able to support multiple loads operating simultaneously.

[0146] ② If the input voltage U of the entire unit is less than the fourth preset value, the program needs to determine the rate of decrease of the input voltage of the air conditioning system. See steps 5131, 5132, 5133, and 5134 for details. In this case, it indicates that the actual voltage supplied to the air conditioning system by the generator is abnormal, suggesting that the generator may be driving multiple loads and that the generator's power supply is insufficient.

[0147] Specifically, the first preset value of the unit shutdown current in the air conditioner program is updated to the set value I limit, and the second preset value of the unit frequency reduction current is also updated to I limit. I1, the third preset value of the overall frequency limiting current is Ilimit- I2.

[0148] ① If the maximum current limit value I is set 限 If the generator's rated power supply capacity meets the maximum operating requirements of the air conditioner, the air conditioner can operate according to the preset control values.

[0149] ②If the maximum current limit value I is set 限 If the total unit shutdown current is less than the first preset value, then the program needs to update the preset first preset value of the total unit shutdown current in the air conditioning program to the set value I. 限 At the same time, update the second preset value of the overall unit frequency reduction current to I. 限 - I1 (for example: I1 can be 1~2A), and the third preset value of the whole machine frequency limiting current is I. 限 - I2 (for example: I2 can be 1~2A). In this case, it means that the rated power supply capacity of the generator cannot meet the maximum operating requirements of the air conditioner. The air conditioner must update the shutdown, frequency reduction, and frequency limiting current values ​​according to the power supply capacity of the generator in order to control the upper limit frequency of the compressor operation and prevent the generator from tripping.

[0150] In some implementations, the preset parameter for limiting the overall current in the current operating mode further includes: an overall shutdown current range; the overall shutdown current range includes: an overall shutdown first current range, an overall shutdown second current range, an overall shutdown third current range, an overall shutdown fourth current range, an overall shutdown fifth current range, an overall shutdown sixth current range, an overall shutdown seventh current range, and an overall shutdown eighth current range. Specifically, the overall shutdown first current range is represented by overall shutdown current range 1, the overall shutdown second current range by overall shutdown current range 2, the overall shutdown third current range by overall shutdown current range 3, the overall shutdown fourth current range by overall shutdown current range 4, the overall shutdown fifth current range by overall shutdown current range 5, the overall shutdown sixth current range by overall shutdown current range 6, the overall shutdown seventh current range by overall shutdown current range 7, and the overall shutdown eighth current range by overall shutdown current range 8.

[0151] Specifically, Figure 14 This is a flowchart illustrating an embodiment of the control logic for a preset air conditioning system shutdown current control level. Figure 14 As shown, the control logic for the preset air conditioning system's overall unit shutdown current control levels includes: Overall unit shutdown current level 8 < Overall unit shutdown current level 7 < Overall unit shutdown current level 6 < Overall unit shutdown current level 5 < Overall unit shutdown current level 4 < Overall unit shutdown current level 3 < Overall unit shutdown current level 2 < Overall unit shutdown current level 1. The difference between two adjacent levels can be the same or different, depending on the preset program.

[0152] Here, the gear settings are used for subsequent generator function condition downshift control. If the maximum shutdown current value given by the program is 16A, then: Shutdown current gear 1: 16A, Shutdown current gear 2: 15A, Shutdown current gear 3: 14A, Shutdown current gear 4: 13A, Shutdown current gear 5: 12A, Shutdown current gear 6: 11A, Shutdown current gear 7: 10A, Shutdown current gear 8: 9A.

[0153] In this invention, multiple current limits are preset in the program. The rate at which the maximum allowable current value is reduced and the current control level are determined by monitoring the compressor input voltage and its rate of decrease. This reduces the risk of tripping caused by a sudden increase in total current due to the addition of high-power appliances, ensuring that the generator or power supply does not trip and allowing multiple appliances to be used simultaneously in cases of insufficient power. Thus, by preset multiple current limits in the program and detecting the rate of decrease in the input voltage to determine the rate at which the maximum allowable current value is reduced and the current control level is determined, the risk of tripping caused by a sudden increase in total current due to the addition of high-power appliances is reduced.

[0154] In step S730, under the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, the preset parameter of the whole machine limiting current under the current operating mode is modified in a second way according to the rate of decrease of the current input voltage of the air conditioning system. This includes a first process of controlling the whole machine shutdown current level according to the rate of decrease of the current input voltage of the air conditioning system when the generator is powered.

[0155] The following is combined Figure 8 The flowchart shown is an embodiment of the first process of controlling the shutdown current level of the entire unit according to the rate of decrease of the current input voltage of the air conditioning system when the generator is supplying power. It further illustrates the specific process of the first process of controlling the shutdown current level of the entire unit according to the rate of decrease of the current input voltage of the air conditioning system when the generator is supplying power in step S730, including steps S810 to S850.

[0156] Step S810: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, determine whether the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value; wherein, the fifth preset value is less than the fourth preset value, and the sixth preset value is less than the fifth preset value.

[0157] Step S820: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the rate of decrease of the current input voltage of the air conditioning system is greater than the fifth preset value, then the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system is determined, and the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system is reduced according to the first set downshift rate, so as to correct the current maximum limiting current value of the air conditioning system until the phase current value of the compressor meets the exit from the unit shutdown current level downshift protection mode.

[0158] Step S830: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, after controlling the reduction of the unit shutdown current level corresponding to the current maximum limit current value of the air conditioning system according to the first set downshift rate, determine whether the unit shutdown current level downshift protection mode has been exited.

[0159] Step S840: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the whole machine shutdown current level downshift protection mode has not been exited, then return to re-determine whether the current input voltage drop rate of the air conditioning system is greater than the fifth preset value.

[0160] Step S850: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the whole unit shutdown current level reduction protection mode has been exited, then the current maximum limiting current value of the air conditioning system is reduced by a third preset current value; then, it is determined whether the cumulative running time of the compressor is greater than a preset time, or whether the voltage difference between the current input voltage of the air conditioning system and the current input voltage of the air conditioning system before the third set time is greater than a preset voltage value: if yes, then the correction of the current maximum limiting current value of the air conditioning system is stopped, that is, the control of the whole unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system is stopped at the first set reduction rate; otherwise, return to the previous step, and in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is mains power supply, based on the whole unit limiting current preset parameters in the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the compressor upper limit frequency in the current operating mode is corrected, and the current frequency of the compressor is adjusted. The third preset current value is as follows: I3.

[0161] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0162] Step 5131: Continuously detect for a certain period of time, for example, 30 seconds. If the difference between the first and last detection values ​​satisfies: (UU') / U ≥ the fifth preset value (for example, the fifth preset value can be ≥ 0.18), then determine the set maximum current limit value I. 限 The system is currently in the unit's shutdown current setting, and a rapid downshift of the unit's shutdown current setting is initiated. For example, the unit's shutdown current setting may be reduced by two levels from the current setting. If a slow downshift is used, the downshift speed is one level. This rapidly reduces the compressor's maximum operating frequency. This indicates that a high-power appliance may have suddenly turned on, causing a sharp drop in the air conditioning system's input voltage. The generator's power supply capacity may not be sufficient to meet the simultaneous operation of all appliances. Therefore, rapid control of the air conditioning system's overall current and compressor frequency is necessary to prevent the generator from tripping.

[0163] After the overall machine shutdown current level is reduced, determine whether the overall machine meets the requirements for exiting the overall machine shutdown current level reduction protection: if it does, exit the shutdown protection; otherwise, continue from step 5131 to re-determine the overall machine voltage drop rate. Simultaneously with exiting the shutdown protection, reduce the set maximum current limit value Ilimit. I3 ( I3 is the program's default value (for example: I3 can be 2~5A. At this time, it means that the current value of the whole machine is relatively high compared with the capacity of the generator, and the protection red line has been triggered. In order to prevent the high current from repeatedly impacting the generator, the upper limit current of the whole machine is corrected downward, the maximum target frequency is reduced, and the risk of protection tripping is avoided.

[0164] At the maximum limiting current value I 限 reduce After I3, the compressor's running time is timed. If the running time is ≥ t (preset value) (e.g., t can be 0.5~5 hours) or the input voltage increases... U (for example: U can be 20~100V), then the compressor frequency will be deactivated. U-correction; otherwise, the compressor's frequency control strategy will be controlled according to the normal mode control program, i.e., the normal mode control strategy in step 41. At this time, to ensure performance, after running for a period of time or after the overall machine voltage has increased, the maximum current limiting value will be exited first. I3 correction. Then reconfirm whether the overall current value is still very high and whether the abnormal situation has disappeared.

[0165] In some embodiments, step S730, in the current operating mode of the air conditioning system and when the power supply mode of the air conditioning system is generator power supply, performs a second correction on the preset parameter of the whole machine limiting current in the current operating mode according to the rate of decrease of the current input voltage of the air conditioning system, and further includes: a second process of controlling the whole machine shutdown current level according to the rate of decrease of the current input voltage of the air conditioning system when the generator is powered.

[0166] The following is combined Figure 9 The flowchart shown is an embodiment of the second process of controlling the shutdown current level of the entire unit according to the rate of decrease of the current input voltage of the air conditioning system when the generator is supplying power. It further illustrates the specific process of the second process of controlling the shutdown current level of the entire unit according to the rate of decrease of the current input voltage of the air conditioning system when the generator is supplying power in step S730, including steps S910 to S930.

[0167] Step S910: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than or equal to a fifth preset value, then it is determined whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to a sixth preset value.

[0168] Step S920: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to a sixth preset value, then the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system is determined, and the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system is reduced according to the second set downshift rate. Then, the process returns to the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power supply, based on the preset parameters of the unit limiting current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, to correct the upper limit frequency of the compressor in the current operating mode, and to adjust the current frequency of the compressor; wherein, the second set downshift rate is less than the first set downshift rate.

[0169] Step S930: In the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is generator power supply, if it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than the sixth preset value, then the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system remains unchanged, and the increase of the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system is restricted. Then, return to the previous step, so that in the current operating mode of the air conditioning system, and when the power supply method of the air conditioning system is AC power supply, based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted.

[0170] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0171] Step 5132: Continuously detect for a certain period of time, for example, 30 seconds. If the difference between the first and last detection values ​​meets the sixth preset value (e.g., 0.09 ≤ the sixth preset value can be < 0.18) ≤ (UU') / U < the fifth preset value, then determine the unit shutdown current level of the set maximum current limit value I and execute a slow reduction in the unit shutdown current level. For example, the unit shutdown current level is directly reduced by 1 level based on the current level for slow reduction processing. After that, the compressor frequency control strategy is controlled according to the normal mode control program, i.e., the normal mode control strategy in step 41. This indicates that at this time, a low-power appliance may suddenly turn on, causing a slight drop in the input voltage of the air conditioning system. The generator's power supply capacity cannot meet the demand of all appliances turning on at the same time. It is necessary to control the unit current and compressor frequency of the air conditioning system slowly to avoid generator tripping.

[0172] Step 5133: Continuously detect for a certain period of time, for example, 30 seconds. If the difference between the first and last detection values ​​satisfies (UU') / U < the sixth preset value, then determine the current setting of the maximum current limit I limit and maintain the current setting unchanged. It is not allowed to increase. Afterwards, the compressor frequency control strategy follows the normal mode control procedure, i.e., the normal mode control strategy in step 41. This indicates that at this time, a low-power appliance may suddenly turn on, which has little impact on the input voltage of the air conditioning system. The generator's power supply capacity can barely meet the needs of all appliances turning on simultaneously, and there is no need to intervene in the overall current and compressor frequency of the air conditioning system for the time being.

[0173] Step 5134: The compressor's frequency control strategy follows the normal mode control strategy in Program 1. The shutdown, frequency limiting, and frequency reduction current values ​​for the entire unit are set to the corrected values.

[0174] This invention adds a function to the remote control, allowing users to preset a current limit based on the generator's maximum output current. This corrects the maximum allowable current value of the entire unit and the compressor's frequency limit, resolving issues caused by unsuitable generator selection or insufficient power output that prevent the air conditioning system from functioning properly. After activating the generator function on the remote control, if the user is unsure of the generator's maximum allowable current limit, intelligent detection can determine the generator's maximum allowable current limit after a trip, and automatically update the maximum allowable current limit of the air conditioning system upon restarting, preventing recurrence of tripping. The maximum allowable current reduction rate and control level are determined by analyzing the compressor's input voltage and its reduction rate. This reduces the risk of sudden increases in total current due to the addition of high-power appliances, thus preventing tripping and ensuring that the generator or power supply does not trip. This allows multiple appliances to be used simultaneously even with insufficient power, preventing generator tripping from affecting the user's normal use of the air conditioning system and improving the reliability of power supply when using the air conditioning system.

[0175] By employing the technical solution of this embodiment, when the air conditioning system is powered by a generator, the system adjusts the overall frequency limiting current, overall frequency reduction current, overall shutdown current, and compressor frequency upper limit based on the user-input maximum limiting current or the maximum limiting current intelligently detected by the air conditioning system, and the overall input voltage of the air conditioning system. When the air conditioning system is powered by mains electricity, the compressor frequency upper limit is adjusted based on the overall current of the air conditioning system. Thus, by adjusting the overall maximum allowable current value and the compressor frequency upper limit according to the power supply conditions of the air conditioning system, the normal operation of the air conditioning system is ensured.

[0176] According to an embodiment of the present invention, a control device for an air conditioning system corresponding to a control method for an air conditioning system is also provided. See also Figure 10 The diagram shows a structural schematic of an embodiment of the device of the present invention. The control device of the air conditioning system may include: an acquisition unit 102 and a control unit 104.

[0177] The control unit 104 is configured to determine the current operating mode of the air conditioning system after the compressor of the air conditioning system is started; wherein the current operating mode of the air conditioning system is a heating mode or a cooling mode. The specific functions and processing of the control unit 104 are described in step S110.

[0178] The control unit 104 is further configured to determine, in the current operating mode of the air conditioning system, a preset parameter for the overall current limiting of the air conditioning system, denoted as the preset parameter for the overall current limiting of the air conditioning system in the current operating mode; and to determine, in the current operating mode of the air conditioning system, the upper limit frequency of the compressor of the air conditioning system, denoted as the upper limit frequency of the compressor in the current operating mode. The specific functions and processing of this control unit 104 are further described in step S120.

[0179] The acquisition unit 102 is configured to acquire, in the current operating mode of the air conditioning system, the current total current of the air conditioning system, the current input voltage of the air conditioning system, the current frequency of the compressor of the air conditioning system, and the current outdoor ambient temperature of the air conditioning system. For the specific functions and processing of the acquisition unit 102, please refer to step S130.

[0180] The control unit 104 is further configured to determine the power supply mode of the air conditioning system under the current operating mode of the air conditioning system; wherein the power supply mode of the air conditioning system is either generator power supply or mains power supply. For example, the power supply mode of the air conditioning system can be determined by whether the generator function mode control button on the remote control of the air conditioning system is pressed; if so, it is generator power supply; otherwise, it is mains power supply. The specific functions and processing of the control unit 104 are further described in step S140.

[0181] The control unit 104 is further configured to, in the current operating mode of the air conditioning system, if the power supply method of the air conditioning system is mains power, correct the upper limit frequency of the compressor in the current operating mode based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjust the current frequency of the compressor, so as to control the air conditioning system to continue to operate at the corrected upper limit frequency of the compressor in the current operating mode and the adjusted current frequency of the compressor, thereby controlling the power supply reliability of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S150.

[0182] In some implementations, the preset parameter for limiting the overall current in the current operating mode includes: a first preset value for the shutdown current of the overall machine in the current operating mode.

[0183] The control unit 104, in the current operating mode of the air conditioning system and when the air conditioning system is powered by mains electricity, corrects the upper limit frequency of the compressor in the current operating mode based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjusts the current frequency of the compressor. This includes a first control process when the current unit current of the air conditioning system is greater than or equal to a first preset value of the unit shutdown current in the current operating mode when powered by mains electricity, as detailed below:

[0184] The control unit 104 is further configured to determine, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, whether the current total current of the air conditioning system is greater than or equal to a first preset value of the total shutdown current in the current operating mode. The specific functions and processing of the control unit 104 are further described in step S210.

[0185] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, control the compressor to stop for protection if it is determined that the current total current of the air conditioning system is greater than or equal to a first preset value of the total shutdown current in the current operating mode. The specific functions and processing of this control unit 104 are further described in step S220.

[0186] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the air conditioning system is powered by AC power, after the compressor exits the shutdown protection, control the compressor's upper limit frequency in the current operating mode to decrease by a preset frequency value, thereby correcting the compressor's upper limit frequency in the current operating mode. The preset frequency value is, for example, the frequency... For details on the specific functions and processing of the control unit 104, please refer to step S230.

[0187] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the air conditioning system is powered by mains electricity, after correcting the upper limit frequency of the compressor in the current operating mode—specifically, after controlling the upper limit frequency of the compressor in the current operating mode to decrease by a preset frequency value—determine whether the cumulative operating time of the compressor is greater than a preset time, or whether the temperature difference between the current outdoor ambient temperature of the air conditioning system and the current outdoor ambient temperature of the air conditioning system before a first set time is greater than a preset temperature value. The specific functions and processing of this control unit 104 are further described in step S240.

[0188] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, if the following conditions are met, stop correcting the upper limit frequency of the compressor in the current operating mode, that is, stop continuing to control the compressor upper limit frequency in the current operating mode to decrease by a preset frequency value. The specific functions and processing of this control unit 104 are further described in step S250.

[0189] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, return to the previous state if the conditions are not met, so as to redetermine the power supply method of the air conditioning system in the current operating mode of the air conditioning system. The specific functions and processing of the control unit 104 are further described in step S260.

[0190] Specifically, Figure 16 A flowchart illustrating an embodiment of the control logic for an air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply. Figure 1 , Figure 17 A flowchart illustrating an embodiment of the control logic for an air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply. Figure 2 .like Figure 16 and Figure 17 As shown, the control logic of the air conditioning system to automatically adjust the upper limit of the compressor frequency based on the power supply includes:

[0191] Step 31: The compressor is switched from the off state to the on state, and then step 32 is executed.

[0192] Step 32: Obtain the overall operating mode. Specifically, this can be done by obtaining remote control information, determining whether the remote control command indicates that the generator function is on or off, and then proceeding to step 33.

[0193] Step 33: Determine if it is generator function mode control: If it is not generator function mode control, proceed to step 34 to control in normal mode; if it is generator function mode control, proceed to step 35 to control in generator function mode. In this step, determine whether the command given by the remote control is to turn the generator function on or off.

[0194] Step 34: If the unit does not receive the instruction to open the generator function mode, the unit will be controlled in normal mode. For details, please refer to steps 41, 42, 43 and 44.

[0195] Step 41: Determine whether the overall machine current I is greater than or equal to the first preset value of the overall machine shutdown current. If yes, proceed to steps 441 and 442; otherwise, proceed to steps 42, 43, and 44.

[0196] Step 441: If the total unit current I ≥ the first preset value of the total unit shutdown current (for example, in the case given above, this value can be set to 16A), the compressor will initiate shutdown protection. After the compressor stops, determine whether the entire unit meets the conditions for exiting the total unit current shutdown protection: if it does, then exit the shutdown protection; otherwise, continue waiting and determine whether the entire unit meets the conditions for exiting the total unit current shutdown protection. Simultaneously with exiting the shutdown protection, under the corresponding operating conditions of the corresponding mode (such as heating mode or cooling mode): the compressor's upper limit frequency decreases. P( P is the program's default value (for example: P can be between 2Hz and 10Hz. At this point, it indicates that the overall current is relatively high, triggering the protection red line. The machine needs to be shut down to reduce the pressure on the entire unit and the temperature rise of its components, ensuring the reliability of the entire machine. Simultaneously, to prevent repeated impacts of high current on the motherboard, the upper limit frequency of the compressor is adjusted downwards, lowering the maximum target frequency to avoid the compressor and motherboard being subjected to high current again after the machine starts, thus preventing frequent protection activation.

[0197] Step 442: Reduce the compressor's upper limit frequency. After P, the compressor's running time is timed. If the running time ≥ t (preset value) (e.g., t can be 0.5~5 hours) or the outdoor ambient temperature change ≥ T (for example: T can be 2~10℃), then the compressor frequency will be reduced. P is corrected; otherwise, continue from step 32 to re-determine the overall machine current. At this point, to ensure performance, after running for a period of time or when the ambient temperature changes significantly, first disable the compressor frequency adjustment. P correction. Then reconfirm whether the overall current value is still very high and whether the abnormal situation has disappeared.

[0198] In some embodiments, the preset parameter for limiting the overall current in the current operating mode further includes: a second preset value for the frequency reduction current of the overall system in the current operating mode, and a third preset value for the frequency limiting current of the overall system in the current operating mode; wherein, the first preset value for the shutdown current of the overall system in the current operating mode > the second preset value for the frequency reduction current of the overall system in the current operating mode, and the second preset value for the frequency reduction current of the overall system in the current operating mode > the third preset value for the frequency limiting current of the overall system in the current operating mode.

[0199] The control unit 104, in the current operating mode of the air conditioning system and when the air conditioning system is powered by mains electricity, corrects the upper limit frequency of the compressor in the current operating mode based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjusts the current frequency of the compressor. This includes a second control process when the current unit current of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode when powered by mains electricity, as detailed below:

[0200] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, if it is determined that the current total current of the air conditioning system is less than a first preset value of the total shutdown current in the current operating mode, then determine whether the current total current of the air conditioning system is greater than or equal to a third preset value of the total frequency limiting current in the current operating mode, and determine whether the current total current of the air conditioning system is less than a second preset value of the total frequency reduction current in the current operating mode. The specific functions and processing of this control unit 104 are further described in step S310.

[0201] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, if it is determined that the current unit current of the air conditioning system is greater than or equal to the second preset value of the unit frequency reduction current in the current operating mode, control the current frequency of the compressor to decrease until the phase current value of the compressor decreases to a preset exit phase current frequency reduction protection mode; after exiting the phase current frequency reduction protection mode, return to the current operating mode of the air conditioning system to re-determine the power supply method of the air conditioning system. The specific functions and processing of this control unit 104 are also described in step S320.

[0202] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, if it is determined that the current unit current of the air conditioning system is greater than or equal to the third preset value of the unit frequency limiting current in the current operating mode and less than the second preset value of the unit frequency reducing current in the current operating mode, then control the compressor to maintain the current frequency of the compressor and limit the increase of the current frequency of the compressor; then, return to the current operating mode of the air conditioning system to redetermine the power supply method of the air conditioning system. The specific functions and processing of this control unit 104 are also described in step S330.

[0203] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, if it is determined that the current unit current of the air conditioning system is less than the third preset value of the unit frequency limiting current in the current operating mode, adjust the current frequency of the compressor to the target frequency of the compressor, control the compressor to operate at the target frequency of the compressor, and allow the target frequency of the compressor to increase; then, return to redetermine the power supply method of the air conditioning system in the current operating mode of the air conditioning system. The specific functions and processing of this control unit 104 are also described in step S340.

[0204] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0205] Step 42: If the second preset value of the overall frequency reduction current (e.g., in the case given above, this value can be set to 14A) ≤ overall current I < first preset value of overall shutdown current, then the compressor frequency is rapidly reduced until the phase current is reduced to the point where the phase current frequency reduction protection is exited. After exiting the phase current frequency reduction protection, the process returns to step 32 to re-determine the overall current. At this point, it indicates that the overall current value is relatively high, and maintaining the frequency unchanged still cannot alleviate the continued rise in system pressure and current. It is necessary to rapidly reduce the frequency to lower the overall current value, system pressure, and component temperature rise to ensure the reliability of the mainboard.

[0206] Step 43: If the third preset value of the overall frequency limiting current (e.g., in the case given above, this value can be set to 12.5A) ≤ overall current I < second preset value of the overall frequency reduction current, then the compressor frequency remains at its current state and is not allowed to increase. Then return to step 32 to re-determine the overall current. At this point, it indicates that the overall current value is relatively high but still within an acceptable range. To ensure performance, the compressor frequency can be maintained at its current frequency. Then, based on the changes in operating pressure, determine whether further intervention in the compressor frequency adjustment is necessary.

[0207] Step 44: If the overall machine current I is less than the third preset value of the overall machine frequency limiting current, the compressor frequency will operate at the target frequency, and an increase is allowed. Then, return to step 32 to re-determine the overall machine current. At this point, it indicates that the compressor phase current value is relatively small. To ensure performance, the compressor frequency is allowed to increase and operate at the target frequency.

[0208] The control unit 104 is further configured to, in the current operating mode of the air conditioning system, if the power supply method of the air conditioning system is generator power supply, correct the preset parameter of the whole unit limiting current in the current operating mode according to the current input voltage of the air conditioning system, so as to control the air conditioning system to continue to operate according to the corrected preset parameter of the whole unit limiting current in the current operating mode, thereby controlling the power supply reliability of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S160.

[0209] This invention proposes a scheme for automatically adjusting the compressor frequency upper limit of an air conditioning system based on power supply conditions. This scheme allows the user to preset the current upper limit on the remote control based on the generator's maximum output current, or to adjust the maximum allowable current value of the entire air conditioning system and the compressor frequency upper limit based on the voltage and current values ​​before a power outage. Simultaneously, by detecting the compressor input voltage and determining the power supply status, the maximum allowable current value of the entire air conditioning system is determined based on the range of the compressor input voltage. By using the maximum allowable current value of the entire air conditioning system to limit the compressor frequency upper limit, the purpose of early intervention in compressor frequency is achieved. Ultimately, this ensures that the generator or power supply does not trip, allowing multiple appliances to be used simultaneously in cases of insufficient power. Therefore, by adjusting the maximum allowable current value of the entire system and the compressor frequency upper limit based on the power supply conditions, this scheme addresses issues related to unsuitable generator selection and power supply limitations. This addresses issues such as insufficient power output causing air conditioning systems to malfunction, including: resolving power outages when the generator is unsuitable or the power supply output is insufficient, leading to the air conditioning system operating at full load based on ambient temperature; resolving power outages when the generator and power supply output can support one air conditioning system at full load but not multiple household appliances operating simultaneously; resolving issues where frequent generator tripping affects generator lifespan and causes malfunctions in electrical components, inconveniencing users; resolving issues where adding another air conditioning system while one is already in use results in limited cooling performance due to voltage and current constraints; and preventing generator tripping from affecting normal air conditioning use, thus improving power supply reliability for users.

[0210] In some embodiments, the control unit 104, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, corrects the preset parameter of the whole unit limiting current in the current operating mode according to the current input voltage of the air conditioning system, including:

[0211] The control unit 104 is further configured to determine whether the current maximum current limit value of the air conditioning system exists in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply. The specific functions and processing of the control unit 104 are further described in step S410.

[0212] In some embodiments, the control unit 104, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, determines whether there is a current maximum current limit value for the air conditioning system, including:

[0213] The control unit 104 is further configured to determine whether the maximum input current limiting mode of the air conditioning system is enabled when the air conditioning system is in its current operating mode and the power supply method of the air conditioning system is generator power supply; wherein, the maximum input current limiting mode of the air conditioning system is a mode that allows the user to input the maximum current limiting value of the air conditioning system. The specific functions and processing of the control unit 104 are further described in step S510.

[0214] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, determine the current maximum current limit value of the air conditioning system if it is determined that the input maximum current limit mode of the air conditioning system is enabled; and receive the maximum current limit value of the air conditioning system input by the user as the current maximum current limit value of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S520.

[0215] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the maximum input current limiting mode of the air conditioning system is not activated, then determine whether the air conditioning system has experienced a power outage: if so, determine that there is a current maximum current limiting value for the air conditioning system, and take the maximum value of the total current of the air conditioning system before the power outage and shutdown as the current maximum current limiting value for the air conditioning system; otherwise, determine that there is no current maximum current limiting value for the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S530.

[0216] Specifically, Figure 11 This is a schematic diagram of one embodiment of a remote control for an air conditioning system. Figure 11As shown, in the remote control section of the air conditioning system, an independent button or a combination of buttons can be added to the remote control to select whether the generator function is on or off. For example, a T-ON button is used to control the generator function to be on, and a T-OFF button is used to control the generator function to be off. The remote control can perform this operation regardless of whether the air conditioning system is on or off.

[0217] Figure 12 This is a flowchart illustrating an embodiment of the control logic for a remote control of an air conditioning system. The control logic for selecting whether the generator function is on or off using the remote control of the air conditioning system can be found in [reference needed]. Figure 12 The example shown. For example... Figure 12 As shown, the control logic of the air conditioning system remote control includes:

[0218] Step 11: With the remote control powered on, proceed to step 12.

[0219] Step 12: Determine if the generator function is on. If yes, proceed to Step 13 to determine the control scheme for the maximum allowable current. Otherwise, proceed to Step 14 to control the air conditioning system in normal mode. In this step, the user can notify the air conditioning system controller via the T-ON button based on the power supply used by the air conditioning system. The T-ON button setting clarifies whether the generator function is on, and then determines the control scheme for the maximum allowable current. This is combined with... Figure 11 In the example shown, if the T-ON button is pressed, it indicates that the generator function is activated.

[0220] Step 13: If the generator function is enabled, control is performed according to the generator function mode. Then, proceed to step 15 to determine which control scheme to use for the maximum allowable current. In this step, if the generator function is enabled, the power source used by the air conditioning system is assumed to be the generator, and control is performed according to the generator function mode.

[0221] Step 14: If the generator is not activated, control the air conditioning system according to its normal operating mode. In this step, since the generator is not activated, it is assumed that the air conditioning system is using normal grid power supply, and it can be controlled according to the normal operating mode preset by the factory.

[0222] Step 15: When the generator function is activated and control is performed according to the generator function mode, determine whether the user is controlling the system according to the maximum input current limit mode. If yes, proceed to step 16; otherwise, proceed to step 17. In this step, the user is allowed to set the maximum operating current of the air conditioning system based on the generator's maximum allowable current.

[0223] Step 16: If the maximum current limiting mode is enabled, the user can input the maximum current limiting value. This step allows the user to set the maximum operating current of the air conditioning system based on the generator's maximum allowable current.

[0224] Step 17: If the maximum current limiting mode is not enabled, the air conditioning system will automatically determine the generator's maximum current limiting function based on intelligent control detection. In this step, if the user is unsure about the generator's maximum allowable current, as long as this function is enabled, the air conditioning system will automatically determine the generator's maximum current limiting function based on intelligent control detection.

[0225] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0226] Step 35: If the whole machine receives the instruction to open the generator function mode, the whole machine will be controlled according to the generator function mode. For details, please refer to steps 51 and 52.

[0227] Step 51: First, determine if the user has entered the set maximum current limit value I. 限 If yes, proceed to steps 511, 512, and 513; otherwise, proceed to step 52. The upper limit current control value for each operating condition is determined through this judgment.

[0228] Step 52: If the user has not entered the set maximum current limit value I 限 If the system suddenly loses power, it will detect whether the entire machine has experienced a power outage and execute steps 521 and 522 based on the detection results.

[0229] Step 521: If the entire machine experiences a sudden power outage, obtain the current value detected before the machine stopped as the maximum limiting current value I. 限 Then, it proceeds according to step 51 of the generator function mode control program. This indicates that the generator's capacity is insufficient to meet the maximum operating requirements of the air conditioning system. Intelligent detection can be used to measure the maximum operating current of the air conditioning system, which will be used as the shutdown current value and a reference for subsequent control.

[0230] Step 522: If no sudden power failure is detected in the entire unit, proceed to step 512 of the generator function mode control program. This indicates that the generator's capacity meets the maximum operating requirements of the air conditioning system, and the program can be executed directly.

[0231] In this invention, a new function is added to the remote control, allowing the user to preset a current upper limit based on the generator's maximum output current, or to adjust the maximum allowable current and compressor frequency upper limit based on the voltage and current values ​​before a power outage. Simultaneously, by detecting the compressor's input voltage and determining the power supply status, the maximum allowable current value is determined based on the input voltage range. This solves the problem of the air conditioning system malfunctioning due to unsuitable generator selection or insufficient power output. The remote control is a control method for the air conditioning system; this version adds on / off control for the generator function. When selecting a generator, the selection manual provides a nominal power and maximum allowable current, allowing the user to preset the current upper limit on the remote control based on the generator's maximum output current. Thus, by adding this function to the remote control, allowing the user to preset a current upper limit based on the generator's maximum output current, or to adjust the maximum allowable current and compressor frequency upper limit based on the voltage and current values ​​before a power outage, the problem of the air conditioning system malfunctioning due to unsuitable generator selection or insufficient power output is resolved. In generator mode, the compressor input voltage is detected and the power supply status is determined. The maximum allowable current value of the whole machine is determined based on the range of the input voltage. By limiting the upper limit of the compressor frequency by the maximum allowable current value of the whole machine, the purpose of early intervention is achieved, so as to ensure that the generator or power supply does not trip and that multiple electrical appliances can be used simultaneously when the power supply is insufficient.

[0232] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, if a current maximum limiting current value of the air conditioning system is determined, perform a first correction on the preset parameter of the whole unit limiting current in the current operating mode based on the current maximum limiting current value of the air conditioning system; then, perform a second correction on the preset parameter of the whole unit limiting current in the current operating mode based on the current input voltage of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S420.

[0233] In some implementations, the preset parameters for the overall machine limiting current in the current operating mode include: a first preset value for the overall machine shutdown current in the current operating mode, a second preset value for the overall machine frequency reduction current in the current operating mode, and a third preset value for the overall machine frequency limiting current in the current operating mode; wherein, the first preset value for the overall machine shutdown current in the current operating mode > the second preset value for the overall machine frequency reduction current in the current operating mode, and the second preset value for the overall machine frequency reduction current in the current operating mode > the third preset value for the overall machine frequency limiting current in the current operating mode.

[0234] The control unit 104, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, performs a first correction on the preset parameter of the whole unit limiting current in the current operating mode according to the current maximum limiting current value of the air conditioning system, including:

[0235] The control unit 104 is further configured to determine whether the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value of the unit shutdown current in the current operating mode, when the power supply method of the air conditioning system is generator power supply. The specific functions and processing of the control unit 104 are further described in step S610.

[0236] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value of the unit shutdown current in the current operating mode, then, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, perform a second correction on the preset parameter of the unit limiting current in the current operating mode based on the current input voltage of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S620.

[0237] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the current maximum limiting current value of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, update the first preset value of the unit shutdown current in the current operating mode to the current maximum limiting current value of the air conditioning system, update the second preset value of the unit frequency reduction current in the current operating mode to the difference between the current maximum limiting current value and the first preset current value; and update the third preset value of the unit frequency limiting current in the current operating mode to the difference between the current maximum limiting current value and the second preset current value; then, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, perform a second correction on the preset parameter of the unit limiting current in the current operating mode according to the current input voltage of the air conditioning system; wherein, the first preset current value is less than the second preset current value. The specific functions and processing of this control unit 104 are also described in step S630. The first preset current value is as follows: I1, the second preset current value is as follows I2.

[0238] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0239] Step 511: If the user has already entered the set maximum current limit value I 限 Then obtain the maximum current limit value I set via remote control. 限 (For example, following the case given above, this value can be set to ≥16A), and then the maximum current limit value I input by the user. 限 Compare with the first preset value of the overall machine shutdown current:

[0240] ① If the maximum current limit value I is set 限 If the generator's rated power supply capacity meets the maximum operating requirements of the air conditioning system, the air conditioning system can operate according to the preset control values.

[0241] ②If the maximum current limit value I is set 限 If the total unit shutdown current is less than the first preset value, then the program needs to update the preset first preset value of the total unit shutdown current in the air conditioning system program to the set maximum limit current value I. 限 At the same time, update the second preset value of the overall unit frequency reduction current to I. 限 - I1 (for example: I1 can be 1~2A), and the third preset value of the overall frequency limiting current is updated to I. 限 - I2 (for example: I2 can be 1~2A), then proceed to step 512. At this point, it indicates that the rated power supply capacity of the generator cannot meet the maximum operating requirements of the air conditioning system. The air conditioning system must update the shutdown, frequency reduction, and frequency limiting current values ​​of the air conditioning system according to the power supply capacity of the generator in order to control the upper limit frequency of the compressor operation and prevent the generator from tripping.

[0242] In the present invention, the phase current of the air conditioning system is related to the ambient temperature limit in different modes. Specifically, when the ambient temperature is low, the temperature rise of the main board components is low, and the allowable phase current can be higher. As the ambient temperature increases, the phase current value gradually decreases. Since the ambient temperature allowed in the heating mode is lower than that allowed in the cooling mode, the maximum phase current limit under the heating condition is higher than that under the cooling mode.

[0243] Figure 13This is a flowchart illustrating an embodiment of the step-by-step control logic for overall current control of an air conditioning system. Figure 13 As shown, the step-by-step control logic for the overall current control of the air conditioning system includes: when the overall current gradually increases, if it reaches the slow-increase current, the compressor frequency is allowed to increase slowly. When the overall current continues to increase and reaches the frequency-limiting current, the compressor frequency is not allowed to increase further. When the overall current continues to increase and reaches the frequency-reducing current, the compressor frequency must be rapidly reduced. When the overall current continues to increase and reaches the shutdown current, the compressor shuts down for protection.

[0244] Among these, the overall unit current rise rate is less than the overall unit frequency limiting current, less than the overall unit frequency reduction current, and less than the overall unit shutdown current. However, the overall unit current rise rate, frequency limiting current, frequency reduction current, and shutdown current are related to the capacity of the air conditioning system. For example, a higher system capacity results in a higher current value, and a lower system capacity results in a lower current value. For instance, by setting and controlling the overall unit current value, the maximum frequency limit of the compressor under various conditions can be controlled. Taking models of 7000W and above as an example: frequency rise rate current: 11.5A~13A, frequency limiting current: 12.5A~14A, frequency reduction current: 14A~16A, shutdown current: 16~20A.

[0245] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that there is no current maximum current limiting value for the air conditioning system, perform a second correction on the preset parameter of the whole unit current limiting value in the current operating mode based on the current input voltage of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S430.

[0246] Specifically, Figure 15 This is a flowchart illustrating an embodiment of the control logic for the overall control section of an air conditioning system. In the present invention, the control process for the overall control section of the air conditioning system can be found in [reference needed]. Figure 15 The example shown. For example... Figure 15 As shown, the control logic of the overall control section of the air conditioning system includes:

[0247] Step 21: Obtain the overall machine operating mode, then proceed to step 22.

[0248] Step 22: Determine whether the machine is controlled in normal mode or generator mode to select the current control strategy during subsequent operation of the machine, and then proceed to step 23.

[0249] Step 23: Determine the shutdown, frequency reduction, and frequency limiting current values ​​for the entire unit. For details, please refer to [link / reference needed]. Figure 13The example shown prepares for determining the upper limit frequency of the compressor, after which step 24 is performed.

[0250] Step 24: Obtain the compressor frequency and current value of the air conditioning system, and then proceed to step 25.

[0251] Step 25: Determine whether it is necessary to intervene in the compressor frequency based on the shutdown, frequency reduction, and frequency limiting current values, and then proceed to step 26.

[0252] Step 26: Determine if the air conditioning system has experienced a power outage, then proceed to step 27.

[0253] Step 27: Based on the air conditioning system's operating mode and overall current before the power outage, determine whether the shutdown, frequency reduction, and frequency limiting current values ​​need to be updated, then proceed to step 28. If the air conditioning system was previously operating in generator mode and a sudden power outage occurred, it indicates that the air conditioning system's maximum allowable current exceeds the generator's capacity range. The air conditioning system will automatically confirm the generator's maximum current limit using intelligent control detection and update the shutdown, frequency reduction, and frequency limiting current values ​​to achieve early intervention. The compressor's frequency control will be adjusted based on the updated current limits.

[0254] Step 28: Obtain the input voltage of the entire air conditioning system, and then proceed to step 29.

[0255] Step 29: Determine whether the shutdown current should be maintained or reduced based on the range of the input voltage value. See [link to relevant documentation] for details. Figure 14 In the example shown, proceed to step 30. If the air conditioning system detects a normal or high input voltage, it indicates that the generator's power supply can meet the load's current requirements, and the air conditioning system's shutdown current setting can be maintained. If the air conditioning system detects a low voltage, it indicates that the generator's power supply cannot meet the load's current requirements. To prevent the generator from tripping, the overall shutdown current setting can be lowered to further reduce the maximum operating frequency of the air conditioning system, ensuring that all electrical appliances can operate normally.

[0256] Step 30: Determine whether to exit the current intervention control mode. If, during operation, the conditions for exiting the current intervention control mode are met, then the current intervention control mode is exited. The compressor frequency is controlled according to normal conditions to increase the maximum operating frequency limit of the compressor, thereby improving the comfort of the air conditioning system.

[0257] In some embodiments, the control unit 104, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, performs a second correction on the preset parameter of the whole unit limiting current in the current operating mode based on the current input voltage of the air conditioning system, including:

[0258] The control unit 104 is further configured to determine whether the current input voltage of the air conditioning system is less than a fourth preset value when the air conditioning system is in its current operating mode and the power supply method of the air conditioning system is generator power. The specific functions and processing of the control unit 104 are further described in step S710.

[0259] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the current input voltage of the air conditioning system is greater than or equal to a fourth preset value, then, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, based on the preset parameter of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, correct the upper limit frequency of the compressor in the current operating mode, and adjust the current frequency of the compressor. The specific functions and processing of this control unit 104 are further described in step S720.

[0260] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the current input voltage of the air conditioning system is less than a fourth preset value, then, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, within a second set time period; and, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, perform a second correction on the preset parameter of the whole unit limiting current in the current operating mode according to the rate of decrease of the current input voltage of the air conditioning system. The specific functions and processing of this control unit 104 are further described in step S730.

[0261] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0262] Step 512: Obtain the input voltage U of the entire unit through the outdoor unit controller (e.g., U can be 130~280V). By obtaining the input voltage of the entire unit, it can be determined whether the generator is simultaneously supplying power to other power supply equipment during the power supply process, and it can also be determined what the actual voltage obtained by the air conditioning system is.

[0263] Step 513: Compare the input voltage U of the entire machine detected by the external unit controller with the fourth preset value of the program:

[0264] ① If the input voltage U of the entire unit is greater than or equal to the fourth preset value, the program does not need to further correct the shutdown, frequency limiting, and frequency reduction current values ​​of the entire unit. The compressor's frequency control strategy is controlled according to the normal mode control program, i.e., the normal mode control strategy in step 41. The shutdown, frequency limiting, and frequency reduction current values ​​of the entire unit are determined according to the generator function mode control program, i.e., the values ​​determined in step 51. The fourth preset value can be 210~280V. In this case, it indicates that the generator is actually supplying normal voltage to the air conditioning system, suggesting that the generator may only be powering one load of the air conditioning system or may be able to support multiple loads operating simultaneously.

[0265] ② If the input voltage U of the entire unit is less than the fourth preset value, the program needs to determine the rate of decrease of the input voltage of the air conditioning system. See steps 5131, 5132, 5133, and 5134 for details. In this case, it indicates that the actual voltage supplied to the air conditioning system by the generator is abnormal, suggesting that the generator may be driving multiple loads and that the generator's power supply is insufficient.

[0266] In some implementations, the preset parameter for limiting the overall current in the current operating mode further includes: an overall shutdown current range; the overall shutdown current range includes: an overall shutdown first current range, an overall shutdown second current range, an overall shutdown third current range, an overall shutdown fourth current range, an overall shutdown fifth current range, an overall shutdown sixth current range, an overall shutdown seventh current range, and an overall shutdown eighth current range. Specifically, the overall shutdown first current range is represented by overall shutdown current range 1, the overall shutdown second current range by overall shutdown current range 2, the overall shutdown third current range by overall shutdown current range 3, the overall shutdown fourth current range by overall shutdown current range 4, the overall shutdown fifth current range by overall shutdown current range 5, the overall shutdown sixth current range by overall shutdown current range 6, the overall shutdown seventh current range by overall shutdown current range 7, and the overall shutdown eighth current range by overall shutdown current range 8.

[0267] Specifically, Figure 14 This is a flowchart illustrating an embodiment of the control logic for a preset air conditioning system shutdown current control level. Figure 14 As shown, the control logic for the preset air conditioning system's overall unit shutdown current control levels includes: Overall unit shutdown current level 8 < Overall unit shutdown current level 7 < Overall unit shutdown current level 6 < Overall unit shutdown current level 5 < Overall unit shutdown current level 4 < Overall unit shutdown current level 3 < Overall unit shutdown current level 2 < Overall unit shutdown current level 1. The difference between two adjacent levels can be the same or different, depending on the preset program.

[0268] Here, the gear settings are used for subsequent generator function condition downshift control. If the maximum shutdown current value given by the program is 16A, then: Shutdown current gear 1: 16A, Shutdown current gear 2: 15A, Shutdown current gear 3: 14A, Shutdown current gear 4: 13A, Shutdown current gear 5: 12A, Shutdown current gear 6: 11A, Shutdown current gear 7: 10A, Shutdown current gear 8: 9A.

[0269] In this invention, multiple current limits are preset in the program. The rate at which the maximum allowable current value is reduced and the current control level are determined by monitoring the compressor input voltage and its rate of decrease. This reduces the risk of tripping caused by a sudden increase in total current due to the addition of high-power appliances, ensuring that the generator or power supply does not trip and allowing multiple appliances to be used simultaneously in cases of insufficient power. Thus, by preset multiple current limits in the program and detecting the rate of decrease in the input voltage to determine the rate at which the maximum allowable current value is reduced and the current control level is determined, the risk of tripping caused by a sudden increase in total current due to the addition of high-power appliances is reduced.

[0270] The control unit 104, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, performs a second correction on the preset parameter of the whole unit limiting current in the current operating mode according to the rate of decrease of the current input voltage of the air conditioning system. This includes a first process of controlling the whole unit shutdown current level according to the rate of decrease of the current input voltage of the air conditioning system when the generator is powered, as follows:

[0271] The control unit 104 is further configured to determine whether the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value when the air conditioning system is currently operating in the same mode and when the power supply method of the air conditioning system is generator power. The specific functions and processing of the control unit 104 are further described in step S810. The fifth preset value is less than the fourth preset value, and the sixth preset value is less than the fifth preset value.

[0272] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, if it is determined that the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value, determine the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system, and control the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system to decrease according to a first preset downshifting rate, so as to correct the current maximum limiting current value of the air conditioning system until the phase current value of the compressor meets the requirement to exit the unit shutdown current level downshifting protection mode. The specific functions and processing of this control unit 104 are also described in step S820.

[0273] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, determine whether the whole unit shutdown current reduction protection mode has been exited after controlling the reduction of the whole unit shutdown current level corresponding to the current maximum limit current value of the air conditioning system at a first set reduction rate. The specific functions and processing of this control unit 104 are further described in step S830.

[0274] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the system has not exited the downshift protection mode for the unit shutdown current, return to re-determine whether the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value. The specific functions and processing of this control unit 104 are further described in step S840.

[0275] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the whole unit shutdown current level reduction protection mode has been exited, reduce the current maximum limiting current value of the air conditioning system by a third preset current value; then, determine whether the cumulative running time of the compressor is greater than a preset time, or whether the voltage difference between the current input voltage of the air conditioning system and the current input voltage of the air conditioning system before the third preset time is greater than a preset voltage value: if yes, stop further correction of the current maximum limiting current value of the air conditioning system, that is, stop further control of the whole unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system at the first preset reduction rate; otherwise, return to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, based on the preset parameters of the whole unit limiting current in the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, correct the upper limit frequency of the compressor in the current operating mode, and adjust the current frequency of the compressor. The specific functions and processing of this control unit 104 are also described in step S850. Among them, the third preset current value is such as current. I3.

[0276] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0277] Step 5131: Continuously detect for a certain period of time, for example, 30 seconds. If the difference between the first and last detection values ​​satisfies: (UU') / U ≥ the fifth preset value (for example, the fifth preset value can be ≥ 0.18), then determine the set maximum current limit value I. 限 The system is currently in the unit shutdown current setting and is rapidly reducing the unit shutdown current setting to quickly lower the compressor's maximum operating frequency. This indicates that a high-power appliance may have suddenly turned on, causing a sharp drop in the air conditioning system's input voltage. The generator's power supply capacity is insufficient to meet the demands of all appliances operating simultaneously. Therefore, rapid reduction of the air conditioning system's overall current and compressor frequency is necessary to prevent the generator from tripping.

[0278] After the overall machine shutdown current level is reduced, determine whether the overall machine meets the requirements for exiting the overall machine shutdown current level reduction protection: if it does, exit the shutdown protection; otherwise, continue from step 5131 to re-determine the overall machine voltage drop rate. Simultaneously with exiting the shutdown protection, reduce the set maximum current limit value Ilimit. I3 ( I3 is the program's default value (for example: I3 can be 2~5A. At this time, it means that the current value of the whole machine is relatively high compared with the capacity of the generator, and the protection red line has been triggered. In order to prevent the high current from repeatedly impacting the generator, the upper limit current of the whole machine is corrected downward, the maximum target frequency is reduced, and the risk of protection tripping is avoided.

[0279] At the maximum limiting current value I 限 reduce After I3, the compressor's running time is timed. If the running time is ≥ t (preset value) (e.g., t can be 0.5~5 hours) or the input voltage increases... U (for example: U can be 20~100V), then the compressor frequency will be deactivated. U-correction; otherwise, the compressor's frequency control strategy will be controlled according to the normal mode control program, i.e., the normal mode control strategy in step 41. At this time, to ensure performance, after running for a period of time or after the overall machine voltage has increased, the maximum current limiting value will be exited first. I3 correction. Then reconfirm whether the overall current value is still very high and whether the abnormal situation has disappeared.

[0280] In some embodiments, the control unit 104, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, performs a second correction on the preset parameter of the whole unit limiting current in the current operating mode according to the rate of decrease of the current input voltage of the air conditioning system. The process further includes a second step of controlling the whole unit shutdown current level according to the rate of decrease of the current input voltage of the air conditioning system when the generator is powered, as detailed below:

[0281] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power supply, determine whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to a sixth preset value if the rate of decrease is less than or equal to a fifth preset value. The specific functions and processing of this control unit 104 are further described in step S910.

[0282] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to a sixth preset value, determine the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system, and control the unit shutdown current level corresponding to the current maximum limiting current value of the air conditioning system to decrease according to a second preset downshift rate, and then return to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, based on the preset parameters of the unit limiting current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, correct the upper limit frequency of the compressor in the current operating mode, and adjust the current frequency of the compressor; wherein, the second preset downshift rate is less than the first preset downshift rate. The specific functions and processing of this control unit 104 are also described in step S920.

[0283] The control unit 104 is further configured to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is generator power, if it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than a sixth preset value, maintain the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system unchanged, and limit the increase of the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system. Then, it returns to, in the current operating mode of the air conditioning system and when the power supply method of the air conditioning system is AC power, based on the preset parameters of the unit shutdown current in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, correct the upper limit frequency of the compressor in the current operating mode, and adjust the current frequency of the compressor. The specific functions and processing of this control unit 104 are further described in step S930.

[0284] Specifically, such as Figure 16 and Figure 17 As shown, the control logic for automatically adjusting the compressor frequency upper limit based on the power supply in the air conditioning system also includes:

[0285] Step 5132: Continuously detect for a certain period of time, for example, 30 seconds. If the difference between the first and last detection values ​​satisfies the sixth preset value (e.g., 0.09 ≤ the sixth preset value can be < 0.18) ≤ (UU') / U < the fifth preset value, then determine the unit shutdown current level at which the set maximum current limit I is located, and execute a slow reduction in the unit shutdown current level. Afterward, the compressor frequency control strategy is controlled according to the normal mode control program, i.e., the normal mode control strategy in step 41. This indicates that at this time, a low-power appliance may suddenly turn on, causing a slight drop in the input voltage of the air conditioning system. The generator's power supply capacity cannot meet the demand of all appliances turning on simultaneously. It is necessary to control the unit current and compressor frequency of the air conditioning system slowly to avoid generator tripping.

[0286] Step 5133: Continuously detect for a certain period of time, for example, 30 seconds. If the difference between the first and last detection values ​​satisfies (UU') / U < the sixth preset value, then determine the current setting of the maximum current limit I limit and maintain the current setting unchanged. It is not allowed to increase. Afterwards, the compressor frequency control strategy follows the normal mode control procedure, i.e., the normal mode control strategy in step 41. This indicates that at this time, a low-power appliance may suddenly turn on, which has little impact on the input voltage of the air conditioning system. The generator's power supply capacity can barely meet the needs of all appliances turning on simultaneously, and there is no need to intervene in the overall current and compressor frequency of the air conditioning system for the time being.

[0287] Step 5134: The compressor's frequency control strategy follows the normal mode control strategy in Program 1. The shutdown, frequency limiting, and frequency reduction current values ​​for the entire unit are set to the corrected values.

[0288] This invention adds a function to the remote control, allowing users to preset a current limit based on the generator's maximum output current. This corrects the maximum allowable current value of the entire unit and the compressor's frequency limit, resolving issues caused by unsuitable generator selection or insufficient power output that prevent the air conditioning system from functioning properly. After activating the generator function on the remote control, if the user is unsure of the generator's maximum allowable current limit, intelligent detection can determine the generator's maximum allowable current limit after a trip, and automatically update the maximum allowable current limit of the air conditioning system upon restarting, preventing recurrence of tripping. The maximum allowable current reduction rate and control level are determined by analyzing the compressor's input voltage and its reduction rate. This reduces the risk of sudden increases in total current due to the addition of high-power appliances, thus preventing tripping and ensuring that the generator or power supply does not trip. This allows multiple appliances to be used simultaneously even with insufficient power, preventing generator tripping from affecting the user's normal use of the air conditioning system and improving the reliability of power supply when using the air conditioning system.

[0289] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0290] By employing the technical solution of this invention, when the power supply mode of the air conditioning system is generator-powered, the system adjusts the overall frequency limiting current, overall frequency reduction current, overall shutdown current, and compressor frequency upper limit by combining the maximum limiting current input by the user or the maximum limiting current intelligently detected by the air conditioning system and the overall input voltage of the air conditioning system. When the power supply mode of the air conditioning system is AC power-powered, the compressor frequency upper limit is adjusted according to the overall current of the air conditioning system, thereby preventing generator tripping from affecting the user's normal use of the air conditioning system and improving the power supply reliability when the user uses the air conditioning system.

[0291] According to an embodiment of the present invention, an air conditioning system corresponding to a control device for an air conditioning system is also provided. This air conditioning system may include the control device for the air conditioning system described above.

[0292] Since the processing and functions implemented by the air conditioning system in this embodiment are basically the same as those of the aforementioned device embodiments, principles and examples, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0293] By employing the technical solution of this invention, when the air conditioning system is powered by a generator, the maximum limiting current input by the user or the maximum limiting current intelligently detected by the air conditioning system, and the input voltage of the entire air conditioning system are combined to correct the overall frequency limiting current, overall frequency reduction current, overall shutdown current, and the upper frequency limit of the compressor of the air conditioning system; when the air conditioning system is powered by mains power, the upper frequency limit of the compressor is corrected according to the overall current of the air conditioning system, thereby solving the problem of the air conditioning system failing to operate normally due to unsuitable generator selection and insufficient power output, and ensuring the normal operation of the air conditioning system.

[0294] According to an embodiment of the present invention, a storage medium corresponding to a control method for an air conditioning system is also provided. The storage medium includes a stored program, wherein the program controls the device where the storage medium is located to execute the control method for the air conditioning system described above when it is executed.

[0295] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0296] By adopting the technical solution of this invention, when the power supply mode of the air conditioning system is generator power supply, the system corrects the overall frequency limiting current, overall frequency reduction current, overall shutdown current and compressor frequency upper limit of the air conditioning system by combining the maximum limiting current input by the user or the maximum limiting current intelligently detected by the air conditioning system and the overall input voltage of the air conditioning system; when the power supply mode of the air conditioning system is AC power supply, the compressor frequency upper limit is corrected according to the overall current of the air conditioning system, ensuring that the generator or power supply does not trip, and multiple electrical appliances can be used simultaneously when the power supply is insufficient.

[0297] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0298] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method for an air conditioning system, characterized in that, include: After the compressor of the air conditioning system starts, the current operating mode of the air conditioning system is determined; In the current operating mode of the air conditioning system, the preset parameter of the whole unit limiting current of the air conditioning system is determined and recorded as the preset parameter of the whole unit limiting current in the current operating mode; And determine the upper limit frequency of the compressor of the air conditioning system, and record it as the upper limit frequency of the compressor in the current operating mode; The system obtains the current total current of the air conditioning system, the current input voltage of the air conditioning system, the current frequency of the compressor of the air conditioning system, and the current outdoor ambient temperature of the air conditioning system. The power supply method of the air conditioning system is determined; wherein, the power supply method of the air conditioning system is either generator power supply or mains power supply; If the air conditioning system is powered by mains power, then based on the preset parameters of the unit current limit under the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted, so as to control the air conditioning system to continue to operate at the corrected upper limit frequency of the compressor under the current operating mode and the adjusted current frequency of the compressor. If the air conditioning system is powered by a generator, the preset parameters of the unit current limiting current in the current operating mode are corrected according to the current input voltage of the air conditioning system, so as to control the air conditioning system to continue to operate according to the corrected preset parameters of the unit current limiting current in the current operating mode.

2. The control method for the air conditioning system according to claim 1, characterized in that, The preset parameters for limiting the overall current in the current operating mode include: the first preset value for the shutdown current of the overall machine in the current operating mode; Based on the preset parameters of the unit current limit under the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted, including: Determine whether the current unit current of the air conditioning system is greater than or equal to the first preset value of the unit shutdown current in the current operating mode; If it is determined that the current total current of the air conditioning system is greater than or equal to the first preset value of the total shutdown current in the current operating mode, then the compressor shutdown protection is controlled. After the compressor exits the shutdown protection, the upper limit frequency of the compressor in the current operating mode is controlled to decrease by a preset frequency value in order to correct the upper limit frequency of the compressor in the current operating mode. After correcting the compressor's upper limit frequency in the current operating mode, it is determined whether the cumulative operating time of the compressor is greater than a preset time, or whether the temperature difference between the current outdoor ambient temperature of the air conditioning system and the current outdoor ambient temperature of the air conditioning system before the first set time is greater than a preset temperature value. If the condition is met, then stop correcting the compressor's upper limit frequency under the current operating mode; If the conditions are not met, return to the previous step to redetermine the power supply method for the air conditioning system.

3. The control method for the air conditioning system according to claim 2, characterized in that, The preset parameters for limiting the overall current in the current operating mode further include: a second preset value for the frequency reduction current of the overall machine in the current operating mode, and a third preset value for the frequency limiting current of the overall machine in the current operating mode; wherein, the first preset value for the shutdown current of the overall machine in the current operating mode > the second preset value for the frequency reduction current of the overall machine in the current operating mode, and the second preset value for the frequency reduction current of the overall machine in the current operating mode > the third preset value for the frequency limiting current of the overall machine in the current operating mode; Based on the preset parameters of the unit current limit under the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor under the current operating mode is corrected, and the current frequency of the compressor is adjusted, including: If it is determined that the current total current of the air conditioning system is less than the first preset value of the total shutdown current in the current operating mode, then it is determined whether the current total current of the air conditioning system is greater than or equal to the third preset value of the total frequency limiting current in the current operating mode, and whether the current total current of the air conditioning system is less than the second preset value of the total frequency reduction current in the current operating mode. If it is determined that the current unit current of the air conditioning system is greater than or equal to the second preset value of the unit frequency reduction current in the current operating mode, then the current frequency of the compressor is controlled to decrease until the phase current value of the compressor decreases to the preset exit phase current frequency reduction protection mode; then, return to redetermine the power supply mode of the air conditioning system. If it is determined that the current unit current of the air conditioning system is greater than or equal to the third preset value of the unit frequency limiting current in the current operating mode, and less than the second preset value of the unit frequency reducing current in the current operating mode, then the compressor is controlled to maintain the current frequency of the compressor and the current frequency of the compressor is limited from increasing; then, the process returns to redetermine the power supply mode of the air conditioning system. If it is determined that the current current of the air conditioning system is less than the third preset value of the frequency limiting current of the system under the current operating mode, the current frequency of the compressor is adjusted to the target frequency of the compressor, the compressor is controlled to operate at the target frequency of the compressor, and the target frequency of the compressor is allowed to increase; then, return to redetermine the power supply mode of the air conditioning system.

4. The control method for an air conditioning system according to claim 1, characterized in that, Based on the current input voltage of the air conditioning system, the preset parameters for the unit's current limiting function in the current operating mode are corrected, including: Determine if the current maximum current limit value of the air conditioning system is available; If the current maximum current limit value of the air conditioning system is determined, the preset parameter of the whole unit current limit in the current operating mode is first corrected according to the current maximum current limit value of the air conditioning system; then, the preset parameter of the whole unit current limit in the current operating mode is second corrected according to the current input voltage of the air conditioning system. If it is determined that there is no current maximum current limit value for the air conditioning system, then the preset parameter of the whole unit current limit in the current operating mode is modified in a second way according to the current input voltage of the air conditioning system.

5. The control method for the air conditioning system according to claim 4, characterized in that, Determining whether the current maximum current limit value of the air conditioning system exists includes: Determine whether the maximum input current limiting mode of the air conditioning system is enabled; wherein, the maximum input current limiting mode of the air conditioning system is a mode that allows the user to input the maximum current limiting value of the air conditioning system; If it is determined that the input maximum current limiting mode of the air conditioning system has been enabled, then the current maximum current limiting value of the air conditioning system is determined; and the maximum current limiting value of the air conditioning system input by the user is received as the current maximum current limiting value of the air conditioning system. If it is determined that the maximum input current limiting mode of the air conditioning system is not enabled, then it is determined whether the air conditioning system has experienced a power outage: if so, then it is determined that there is a current maximum current limiting value of the air conditioning system, and the maximum value of the total current of the air conditioning system before the power outage and shutdown is taken as the current maximum current limiting value of the air conditioning system; otherwise, it is determined that there is no current maximum current limiting value of the air conditioning system.

6. The control method for the air conditioning system according to claim 4, characterized in that, The preset parameters for limiting the overall current in the current operating mode include: a first preset value for the overall shutdown current in the current operating mode, a second preset value for the overall frequency reduction current in the current operating mode, and a third preset value for the overall frequency limiting current in the current operating mode; wherein, the first preset value for the overall shutdown current in the current operating mode > the second preset value for the overall frequency reduction current in the current operating mode, and the second preset value for the overall frequency reduction current in the current operating mode > the third preset value for the overall frequency limiting current in the current operating mode; Based on the current maximum current limiting value of the air conditioning system, the preset parameters of the whole unit current limiting value in the current operating mode are first corrected, including: Determine whether the current maximum current limit value of the air conditioning system is greater than or equal to the first preset value of the whole unit shutdown current in the current operating mode; If it is determined that the current maximum limiting current value of the air conditioning system is greater than or equal to the first preset value of the whole unit shutdown current in the current operating mode, then the preset parameter of the whole unit limiting current in the current operating mode is corrected in the second way according to the current input voltage of the air conditioning system. If it is determined that the current maximum limiting current value of the air conditioning system is less than the first preset value of the unit shutdown current in the current operating mode, then the first preset value of the unit shutdown current in the current operating mode is updated to the current maximum limiting current value of the air conditioning system, and the second preset value of the unit frequency reduction current in the current operating mode is updated to the difference between the current maximum limiting current value and the first preset current value; and the third preset value of the unit frequency limiting current in the current operating mode is updated to the difference between the current maximum limiting current value and the second preset current value; then, based on the current input voltage of the air conditioning system, the preset parameter of the unit limiting current in the current operating mode is corrected for the second time; wherein, the first preset current value is less than the second preset current value.

7. The control method for an air conditioning system according to any one of claims 4 to 6, characterized in that, Based on the current input voltage of the air conditioning system, a second correction is made to the preset parameter of the whole unit limiting current in the current operating mode, including: Determine whether the current input voltage of the air conditioning system is less than a fourth preset value; If it is determined that the current input voltage of the air conditioning system is greater than or equal to the fourth preset value, then based on the preset parameter of the whole unit current limit in the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted. If it is determined that the current input voltage of the air conditioning system is less than the fourth preset value, then within a second set time period, the rate of decrease of the current input voltage of the air conditioning system is determined; and based on the rate of decrease of the current input voltage of the air conditioning system, the preset parameter of the whole machine limiting current in the current operating mode is corrected for the second time.

8. The control method for an air conditioning system according to claim 7, characterized in that, The preset parameters for limiting the overall current in the current operating mode also include: overall shutdown current range; the overall shutdown current range includes: overall shutdown first current range, overall shutdown second current range, overall shutdown third current range, overall shutdown fourth current range, overall shutdown fifth current range, overall shutdown sixth current range, overall shutdown seventh current range, and overall shutdown eighth current range, with the current range increasing sequentially; Based on the rate of decrease of the current input voltage of the air conditioning system, a second correction is made to the preset parameter of the whole unit limiting current in the current operating mode, including: Determine whether the rate of decrease of the current input voltage of the air conditioning system is greater than a fifth preset value; If it is determined that the rate of decrease of the current input voltage of the air conditioning system is greater than the fifth preset value, then the unit shutdown current level corresponding to the current maximum limit current value of the air conditioning system is determined, and the unit shutdown current level corresponding to the current maximum limit current value of the air conditioning system is reduced according to the first set downshift rate, so as to correct the current maximum limit current value of the air conditioning system until the phase current value of the compressor meets the exit from the unit shutdown current level downshift protection mode. After controlling the air conditioning system to reduce the current level of the unit shutdown corresponding to the current maximum limit current value according to the first set downshift rate, determine whether the unit shutdown current level downshift protection mode has been exited. If it is determined that the whole machine shutdown current level downshift protection mode has not been exited, then return to re-determine whether the current input voltage drop rate of the air conditioning system is greater than the fifth preset value; If it is determined that the whole unit shutdown current reduction protection mode has been exited, the current maximum current limit value of the air conditioning system is reduced by a third preset current value. Then, it is determined whether the cumulative running time of the compressor is greater than a preset time, or whether the voltage difference between the current input voltage of the air conditioning system and the current input voltage of the air conditioning system before the third preset time is greater than a preset voltage value. If yes, the correction of the current maximum current limit value of the air conditioning system is stopped. Otherwise, it returns to the previous state and, based on the preset parameters of the whole unit current limit in the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted.

9. The control method for an air conditioning system according to claim 8, characterized in that, Based on the rate of decrease of the current input voltage of the air conditioning system, a second correction is made to the preset parameter of the whole unit limiting current in the current operating mode, which further includes: If it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than or equal to the fifth preset value, then it is determined whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to the sixth preset value. If it is determined whether the rate of decrease of the current input voltage of the air conditioning system is greater than or equal to the sixth preset value, then the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system is determined, and the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system is reduced according to the second set down-level rate. Then, it returns to the previous state, and based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted; wherein, the second set down-level rate is less than the first set down-level rate. If it is determined that the rate of decrease of the current input voltage of the air conditioning system is less than the sixth preset value, then the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system remains unchanged, and the increase of the unit shutdown current level corresponding to the current maximum current limit value of the air conditioning system is restricted. Then, the process returns to the previous state, and based on the preset parameters of the unit current limit in the current operating mode, combined with the current unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, the upper limit frequency of the compressor in the current operating mode is corrected, and the current frequency of the compressor is adjusted.

10. A control device for an air conditioning system, characterized in that, include: The control unit is configured to determine the current operating mode of the air conditioning system after the compressor of the air conditioning system is started; The control unit is further configured to determine the preset parameters of the whole unit current limiting of the air conditioning system in the current operating mode of the air conditioning system, and denoted as the preset parameters of the whole unit current limiting in the current operating mode; And determine the upper limit frequency of the compressor of the air conditioning system, and record it as the upper limit frequency of the compressor in the current operating mode; The acquisition unit is configured to acquire the current total current of the air conditioning system, the current input voltage of the air conditioning system, the current frequency of the compressor of the air conditioning system, and the current outdoor ambient temperature of the air conditioning system. The control unit is further configured to determine the power supply method of the air conditioning system; wherein the power supply method of the air conditioning system is generator power supply or mains power supply; The control unit is further configured to, if the power supply mode of the air conditioning system is mains power supply, correct the upper limit frequency of the compressor in the current operating mode based on the preset parameter of the whole unit current limit in the current operating mode, combined with the current whole unit current of the air conditioning system and the current outdoor ambient temperature of the air conditioning system, and adjust the current frequency of the compressor, so as to control the air conditioning system to continue to operate at the corrected upper limit frequency of the compressor in the current operating mode and the adjusted current frequency of the compressor; The control unit is further configured to, if the power supply method of the air conditioning system is generator power supply, correct the preset parameter of the whole unit current limit in the current operating mode according to the current input voltage of the air conditioning system, so as to control the air conditioning system to continue to operate according to the corrected preset parameter of the whole unit current limit in the current operating mode.

11. An air conditioning system, characterized in that, include: The control device for the air conditioning system as described in claim 10.

12. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the control method of the air conditioning system according to any one of claims 1 to 9.

Images