Motor simulation control system and control method thereof, and air conditioning system

Abstract

The invention discloses a motor simulation control system, a control method thereof and an air conditioning system, and the control method of the motor simulation control system comprises the steps: obtaining a specified control parameter of a motor in the motor simulation control system, and obtaining a target operation parameter corresponding to the specified control parameter according to a preset corresponding relation; adjusting the output load of a resistance device in the motor simulation control system so as to adjust the real-time operation parameters of the motor to operate at the target operation parameters; and when the real-time operation parameters of the motor operate at the target operation parameters, the motor simulation control system replaces the target control system. Compared with the prior art, the air conditioning system can be normally started under the condition that a compressor is not connected, so that the air conditioning system after-sales troubleshooting device is used for after-sales troubleshooting of the air conditioning system, the cost is low, carrying is convenient, and the after-sales efficiency of the air conditioning system is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, in particular to an electric motor simulation control system, its control method, and an air conditioning system. Background Art

[0002] Among the after-sales faults of air conditioning systems, the proportion of compressor drive faults is not low. However, during actual fault troubleshooting, since the compressor is not easy to carry and assemble, it is often necessary to troubleshoot the main control and other components first, and finally replace the compressor as the last step, resulting in low efficiency. In addition, when replacing the compressor first during troubleshooting to verify whether the main control and the drive board can operate normally, there is a risk that some main control and drive board faults may burn out the compressor, increasing after-sales costs.

[0003] Currently, the main boards of air conditioning systems are mostly integrated main drive boards, that is, the main control and the drive are integrated on one main board, and it cannot replace the real compressor through data simulation. As a result, during the after-sales fault troubleshooting of air conditioning systems, it is necessary to carry, assemble, and replace the compressor to troubleshoot the after-sales faults of the air conditioning system, resulting in low efficiency. Therefore, how to design an electric motor simulation control system, its control method, and an air conditioning system to improve efficiency during the after-sales fault troubleshooting of air conditioning systems is a technical problem that the industry urgently needs to solve. Summary of the Invention

[0004] Aiming at the problem in the prior art that during the after-sales fault troubleshooting of air conditioning systems, it is necessary to carry a compressor, resulting in low efficiency and possible increase in after-sales costs, the present invention proposes an electric motor simulation control system, its control method, and an air conditioning system.

[0005] The technical solution of the present invention is to propose a control method for an electric motor simulation control system, including: obtaining specified control parameters of the motor in the electric motor simulation control system, and obtaining target operating parameters corresponding to the specified control parameters according to a preset corresponding relationship; Adjusting the output load size of a resistance device in the electric motor simulation control system to adjust the real-time operating parameters of the motor to operate at the target operating parameters; When the real-time operating parameters of the motor operate at the target operating parameters, the electric motor simulation control system replaces the target control system.

[0006] Further, the preset corresponding relationship is set according to the corresponding relationship between the specified control parameters and the target operating parameters in the target control system.

[0007] Further, adjusting the output load size of the resistance device in the electric motor simulation control system includes: Detecting the real-time operating parameters of the motor, and comparing the real-time operating parameters with the target operating parameters; When the real-time operating parameter is greater than the target operating parameter, reduce the output load magnitude of the resistance device; when the real-time operating parameter is less than the target operating parameter, increase the output load magnitude of the resistance device.

[0008] Further, adjusting the output load magnitude of the resistance device in the motor simulation control system further includes: After each adjustment of the output load magnitude of the resistance device, determine the magnitude relationship between the real-time operating parameter and the target operating parameter; When the magnitude relationship between the real-time operating parameter and the target operating parameter is the same as the magnitude relationship between the real-time operating parameter and the target operating parameter after the previous adjustment of the output load magnitude of the resistance device, control the adjustment value of the output load magnitude of the resistance device this time to be the same as the adjustment value of the output load magnitude of the resistance device last time.

[0009] Further, adjusting the output load magnitude of the resistance device in the motor simulation control system further includes: After each adjustment of the output load magnitude of the resistance device, determine the magnitude relationship between the real-time operating parameter and the target operating parameter; When the magnitude relationship between the real-time operating parameter and the target operating parameter is different from the magnitude relationship between the real-time operating parameter and the target operating parameter after the previous adjustment of the output load magnitude of the resistance device, control the adjustment value of the output load magnitude of the resistance device this time to be half of the adjustment value of the output load magnitude of the resistance device last time.

[0010] Further, adjusting the output load magnitude of the resistance device in the motor simulation control system further includes: After each adjustment of the output load magnitude of the resistance device, determine whether the adjustment value of the output load magnitude of the resistance device reaches the minimum adjustment value; When it is determined to be yes, stop adjusting the output load magnitude of the resistance device, and determine that the real-time operating parameter of the motor is operating at the target operating parameter at this time.

[0011] Further, the specified control parameter of the motor is the specified operating frequency of the motor, the target operating parameter of the motor is the target output current of the motor, and the real-time operating parameter of the motor is the real-time output current of the motor.

[0012] The present invention also proposes a motor simulation control system, which includes a motor, a control main board and a resistance device connected to the motor, and both the control main board and the resistance device are connected to a host computer; The host computer is used to detect the real-time operating parameters of the motor and the output load size of the resistance device; The control main board is used to obtain the specified control parameters, obtain the target operating parameters corresponding to the specified control parameters according to the preset corresponding relationship, and adjust the output load size of the resistance device so as to adjust the real-time operating parameters of the motor to operate at the target operating parameters.

[0013] Further, the resistance device is an electric friction disc.

[0014] The present invention also provides an air-conditioning system, and the air-conditioning system has the above-mentioned motor simulation control system.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: By adjusting the real-time operating parameters of the motor and cooperating with adjusting the output load size of the resistance device, the present invention can replace the compressor to output the target operating parameters, so that when troubleshooting after-sales faults of the air-conditioning system, it is no longer necessary to carry a compressor to complete the after-sales fault troubleshooting, which greatly improves the efficiency of after-sales fault troubleshooting of the air-conditioning system. At the same time, since it is no longer necessary to carry a compressor for after-sales fault troubleshooting, it also avoids the problem of the compressor being burned due to faults in the main control and drive boards of the air-conditioning system, and reduces the after-sales cost of the air-conditioning system. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is the overall system structure block diagram of the motor simulation control system in the present invention; Figure 2 It is the overall control flow of the control method of the motor simulation control system in the present invention; Figure 3 It is the specific flowchart of the control method of the motor simulation control system in the present invention. Detailed Embodiments

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the following will further describe the present invention in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0019] Accordingly, a feature pointed out in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the illustrated feature. In addition, it should be noted that this specification describes many features. Although certain features may be combined to show possible system designs, these features may also be used in other combinations that are not explicitly described. Accordingly, unless otherwise stated, the illustrated combinations are not intended to be limiting.

[0020] The principle and structure of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Among the after-sales faults of air-conditioning systems, the proportion of compressor drive faults is not low. However, during actual fault troubleshooting, since the compressor is not easy to carry and assemble, it is often only after troubleshooting the main control and other components that the compressor is replaced as the last step, resulting in low efficiency. In addition, if the compressor is replaced first during troubleshooting and when verifying whether the main control and drive board can operate normally, there may be risks such as burning out the compressor for some main control and drive board faults, increasing after-sales costs.

[0022] Currently, the main boards of air-conditioning systems are mostly integrated main drive boards, that is, the main control and drive are integrated onto one main board, and it cannot replace the real compressor through data simulation. As a result, during the after-sales faults of air-conditioning systems, it is necessary to carry, assemble, and replace the compressor to troubleshoot the after-sales faults of the air-conditioning system, resulting in low efficiency.

[0023] Here, it needs to be pointed out that the reason why the integrated main drive board cannot replace the real compressor through data simulation is that the integrated main drive board generally writes the main control and drive programs in one chip to minimize costs. However, in this way, the interaction between the main control and drive can only be realized within its own program, and the data simulation method can only be applied to the structure where there is communication between chips and one chip replaces another chip to send data. Therefore, currently, the air-conditioning system with an integrated main drive board cannot replace the real compressor through data simulation.

[0024] For this reason, the design idea of the present invention is to propose a motor simulation control system to simulate the connected compressor and output corresponding target operating parameters, so that when troubleshooting after-sales faults of the air-conditioning system, there is no need to carry and connect the compressor anymore, improving the efficiency of troubleshooting after-sales faults of the air-conditioning system.

[0025] Specifically, the motor simulation control system proposed in the present invention includes a motor, as well as a control main board and a resistance device connected to the motor. Both the control main board and the resistance device are connected to the host computer; The host computer is used to detect the real-time operating parameters of the motor and the output load size of the resistance device; The control main board is used to obtain specified control parameters, obtain target operating parameters corresponding to the specified control parameters according to a preset corresponding relationship, and adjust the output load of the resistance device to adjust the real-time operating parameters of the motor to operate at the target operating parameters.

[0026] Please refer to Figure 1 , the motor simulation control system proposed by the present invention has four parts, namely a motor, a control main board, a resistance device, and a host computer; Among them, the motor is the main part of the motor simulation control system and is used to simulate the operation of the compressor. When the compressor operates, each operating frequency of the compressor corresponds to an output current. When using the motor to simulate the compressor, the operating frequency required for the compressor operation by the air-conditioning system can be obtained first, and then the motor can be controlled to operate at this operating frequency. At the same time, the output current of the motor is adjusted so that the output current of the motor is exactly the same as the output current corresponding to the compressor at this operating frequency. Then the motor can replace the compressor. Here, the operating frequency required for the compressor operation by the air-conditioning system is also the specified control parameter mentioned above; the output current of the compressor corresponding to the operating frequency required for the compressor operation by the air-conditioning system is also the target operating parameter of the motor mentioned above; Since the directly connected motor is generally in an unloaded state and its output current is small, therefore, in the present invention, the above-mentioned resistance device is connected, which is used to simulate the loaded state of the compressor. By continuously adjusting the output load of the resistance device, the output current of the motor can be adjusted, so that the final output current of the motor is the same as the output current of the compressor corresponding to the operating frequency required for the compressor operation by the air-conditioning system, so as to achieve the purpose of replacing the compressor with the motor. Among them, the resistance device in the present invention is set as an electric friction disc.

[0027] The above-mentioned host computer is used to detect the output current of the motor and the output load of the resistance device, and is used to output parameters such as the detected output current and output load to the control main board; After the control main board obtains the above parameters such as the output current and output load, it adjusts the output load of the resistance device, so that the output current of the motor is the output current of the compressor corresponding to the operating frequency required for the compressor operation by the air-conditioning system, that is, as mentioned above, the real-time operating parameters of the motor operate at the target operating parameters.

[0028] By the above method, the present invention corresponds the operating frequency and output current of the motor to the operating frequency and output current required by the air-conditioning system for the compressor. Then, without connecting the compressor, the motor can replace the compressor, so as to be used in the after-sales fault troubleshooting of the air-conditioning system. Moreover, since the motor is easy to carry and disassemble, compared with the scheme of directly connecting the compressor, the efficiency of after-sales fault troubleshooting is greatly improved.

[0029] Please refer to Figure 1 , based on the above motor simulation control system, the present invention further provides a control method for a motor simulation control system, which includes: Obtain the specified control parameter of the motor in the motor simulation control system, and obtain the target operating parameter corresponding to the specified control parameter according to the preset corresponding relationship set in advance; Adjust the output load of the resistance device in the motor simulation control system to adjust the real-time operating parameter of the motor to operate at the target operating parameter; When the real-time operating parameter of the motor operates at the target operating parameter, the motor simulation control system replaces the target control system.

[0030] Here, the specified control parameter of the motor is the specified operating frequency of the motor, which corresponds to the operating frequency required by the air-conditioning system for the compressor. The target operating parameter of the motor is the target output current of the motor, which corresponds to the output current corresponding to the operating frequency required by the air-conditioning system for the compressor. The real-time operating parameter of the motor is the real-time output current of the motor.

[0031] It should be noted that when adjusting the real-time operating parameter of the motor, it is achieved by adjusting the output load of the resistance device. At this time, the prerequisite to be ensured is that the operating frequency of the motor is at the specified operating frequency. By adjusting in this way, after adjusting the real-time output current of the motor to be equal to the target output current through the resistance device, at this time, both the operating frequency and the real-time output current of the motor correspond to the operating frequency and output current required by the air-conditioning system for the compressor. Then, it can be realized that when the real-time operating parameter of the motor operates at the target operating parameter, the motor simulation control system replaces the target control system. Here, the target control system is also the operating system of the compressor.

[0032] After replacing the operating system of the compressor with the motor simulation control system, the after-sales faults of the air-conditioning system can be directly detected by using this motor simulation system, without the need to connect the compressor again, which is convenient to operate and has higher efficiency.

[0033] Furthermore, the preset corresponding relationship in the present invention is set according to the corresponding relationship between the specified control parameter and the target operating parameter in the target control system.

[0034] Here, there is a non-linear relationship between the operating frequency and the output current of the compressor. The specific functional relationship can only be obtained by plotting a curve (i.e., a data table) based on experimental data and cannot be expressed by a formula. Moreover, in reality, it is even more complex that the curves for different compressor models are different. Therefore, the method for obtaining the above preset correspondence in the present invention is as follows: Write the operating frequency and output current function curves corresponding to the mainstream compressor models of air-conditioning products (where the operating frequency and output current function curves need to be obtained by fitting multiple experimental results) into the host computer, and directly call them during use.

[0035] In the present invention, the above method is adopted to obtain the preset correspondence, and no additional calculation process is required during the call, which can improve the control efficiency of the target control system. In addition, compared with the method of real-time monitoring and calculation control, this direct call method has a lower programming difficulty, a lower design cost, and is more convenient for subsequent debugging and modification work.

[0036] Furthermore, adjusting the output load size of the resistance device in the above motor simulation control system includes: Detecting the real-time operating parameters of the motor and comparing the real-time operating parameters with the target operating parameters; When the real-time operating parameters are greater than the target operating parameters, reducing the output load size of the resistance device; when the real-time operating parameters are less than the target operating parameters, increasing the output load size of the resistance device.

[0037] Here, the real-time operating parameters of the motor are also the real-time output current of the motor, which is related to the load state of the motor. The real-time output current of the motor is smaller under the no-load state, and as the output load size of the resistance device increases, the real-time output current of the motor will also increase accordingly.

[0038] In this regard, when the real-time operating parameters of the motor are greater than the target operating parameters, in order to make the real-time operating parameters of the motor reach the target operating parameters at this time, it is necessary to reduce the real-time operating parameters of the motor. Since the real-time output current of the motor is positively correlated with the output load size of its resistance device, that is, the real-time operating parameters of the motor are positively correlated with the output load size of the seniority device. Therefore, when it is necessary to reduce the real-time operating parameters of the motor, it is necessary to correspondingly reduce the output load size of the resistance device; Similarly, when it is necessary to increase the real-time operating parameters of the motor, it is necessary to correspondingly increase the output load size of the resistance device; That is, corresponding to the previous text, when the real-time operating parameters are greater than the target operating parameters, reducing the output load size of the resistance device; when the real-time operating parameters are less than the target operating parameters, increasing the output load size of the resistance device.

[0039] In this way, there is no need to adjust the operating frequency of the motor. Only by adjusting the output load of the resistance device can the real-time operating frequency of the motor be adjusted. That is, it is possible to adjust the real-time output current of the motor while ensuring that the operating frequency of the motor is within the specified operating frequency. And through this adjustment method, when the real-time operating parameters of the motor are equal to the target operating parameters, the operating frequency of the motor can be equal to the specified operating frequency, and the real-time operating parameters of the motor can be equal to the target operating parameters. At this time, the motor can completely replace the compressor and be used for troubleshooting after-sales problems in the above air-conditioning system.

[0040] Furthermore, adjusting the output load of the resistance device in the motor simulation control system of the present invention further includes: After each adjustment of the output load of the resistance device, determine the magnitude relationship between the real-time operating parameters and the target operating parameters; When the magnitude relationship between the real-time operating parameters and the target operating parameters is the same as the magnitude relationship between the real-time operating parameters and the target operating parameters after the last adjustment of the output load of the resistance device, control the adjustment value of the output load of the resistance device this time to be the same as the adjustment value of the output load of the resistance device last time.

[0041] And further includes: After each adjustment of the output load of the resistance device, determine the magnitude relationship between the real-time operating parameters and the target operating parameters; When the magnitude relationship between the real-time operating parameters and the target operating parameters is different from the magnitude relationship between the real-time operating parameters and the target operating parameters after the last adjustment of the output load of the resistance device, control the adjustment value of the output load of the resistance device this time to be half of the adjustment value of the output load of the resistance device last time.

[0042] Here, the real-time operating parameters of the motor are adjusted by the output load of the resistance device, and there is no specific measurement relationship in this adjustment process. When adjusting the output load of the resistance device each time, there may be problems such as insufficient adjustment value or excessive adjustment value of the output load; For example, the real-time operating parameter of the motor at this time is 5A, and the target operating parameter is 7A. At this time, it is necessary to increase the output load of the resistance device to increase the real-time operating parameter. However, the corresponding relationship between the output load of the resistance device and the change value of the specific real-time operating parameter is not easy to quantify. When adjusting the output load of the resistance device once, the adjustment value of the output load may be too high, resulting in the real-time operating parameter becoming 8A, which exceeds the target operating parameter at this time. Similarly, the adjustment value of the output load may be too low, resulting in the real-time operating parameter becoming 6A, which is still not enough to reach the target operating parameter. Therefore, the above process of the present invention explains the above two situations respectively; Here, when the size relationship between the real-time operating parameters and the target operating parameters is the same as that after adjusting the output load of the resistance device last time, that is, the adjustment value of the above-mentioned output load size is too low, the specific situation can be divided into two types. The first type is: when the real-time operating parameters were greater than the target operating parameters last time, if the output load of the resistance device is adjusted, and at this time the real-time operating parameters are still greater than the target operating parameters; The second type is: when the real-time operating parameters were less than the target operating parameters last time, if the output load of the resistance device is adjusted, and at this time the real-time operating parameters are still less than the target operating parameters; In either of the above cases, it can be explained that the adjustment value of the output load of the resistance device at this time is insufficient to make it reach the target operating parameters, that is, corresponding to the situation where the adjustment value of the above-mentioned output load size is too low.

[0043] Similarly, when the size relationship between the real-time operating parameters and the target operating parameters is different from that after adjusting the output load of the resistance device last time, that is, the adjustment value of the above-mentioned output load size is too high, the specific situation can be divided into two types. The first type is: when the real-time operating parameters were greater than the target operating parameters last time, if the output load of the resistance device is adjusted, and at this time the real-time operating parameters are less than the target operating parameters; The second type is: when the real-time operating parameters were less than the target operating parameters last time, if the output load of the resistance device is adjusted, and at this time the real-time operating parameters are greater than the target operating parameters; In either of the above cases, it can be explained that the adjustment value of the output load of the resistance device at this time is too high, resulting in the real-time operating parameters of the motor exceeding the target operating parameters, that is, corresponding to the situation where the adjustment value of the above-mentioned output load size is too high.

[0044] According to the control method given above in the present invention: when the adjustment value of the output load of the resistance device is too low, control the adjustment value of the output load of the resistance device this time to be the same as that of the resistance device last time; when the adjustment value of the output load of the resistance device is too high, control the adjustment value of the output load of the resistance device this time to be half of that of the resistance device last time; Then, the real-time operating parameters of the motor can be accurately controlled to operate at the target operating parameters. For example, if the target operating parameter is 10 A and the real-time operating parameter is 8 A, and the change amount of the target operating parameter caused by the adjustment value of the output load size of the resistance device each time currently is 3 A. According to the above control method, during the first adjustment, the real-time operating parameter will become 11 A at this time, which is greater than the target operating parameter. At this time, it is necessary to reduce the adjustment value of the output load size of the resistance device by half to become 1.5 A, and then perform the next adjustment of the output load size of the resistance device. After this adjustment, the real-time operating parameter will become 9.5 A, and the size relationship between the real-time operating parameter and the target operating parameter has changed compared with the previous time. Then, it is necessary to further reduce the adjustment value of the output load size of the resistance device and change it to 0.75, so that the real-time operating parameter becomes 10.25 A, and then cycle like this. Eventually, the real-time operating parameter can be made equal to the target operating parameter.

[0045] According to the above adjustment method, the present invention can accurately adjust the adjustment value of the output load size of the resistance device and make the final real-time operating parameter equal to the target operating parameter, solving the problem that the corresponding relationship between the adjustment of the output load size of the resistance device and the real-time operating parameter cannot be quantified, and greatly improving the adjustment accuracy.

[0046] Further, adjusting the output load size of the resistance device in the motor simulation control system further includes: After each adjustment of the output load size of the resistance device, it is judged whether the adjustment value of the output load size of the resistance device reaches the minimum adjustment value; When it is determined to be yes, stop adjusting the output load size of the resistance device and determine that the real-time operating parameter of the motor operates at the target operating parameter at this time.

[0047] Here, taking the above adjustment situation as an example to continue the description, when the real-time operating parameter is adjusted to 10.25 A, at this time, it is still necessary to reduce the adjustment value of the output load size of the resistance device and change it to 0.375. After this adjustment, the real-time operating parameter will become 9.875, and then reduce the adjustment value of the output load size of the resistance device again and change it to 0.1875, so that the real-time operating parameter becomes 10.0625. Although cycling like this can make the real-time operating parameter get closer and closer to the target operating parameter, ultimately, the adjustment value of the output load size of the resistance device each time will become very small, and finally it will lead to inability to adjust. For this reason, in the present invention, when the adjustment value of the output load size of the resistance device reaches the minimum adjustment value, stop adjusting the output load size of the resistance device and determine that the real-time operating parameter of the motor operates at the target operating parameter at this time.

[0048] The above setting 1 is used to prevent the adjustment value of the output load of the resistance device from being cut infinitely, and the second is to reduce control resources. Generally, when the adjustment value of the output load of the resistance device reaches the minimum adjustment value, the real-time operating parameters are already very close to the target operating parameters at this time. If the adjustment continues, the adjustment value changed each time is small, which has little impact on the troubleshooting of the air-conditioning system, but will instead waste the control resources of the control main board. After the above conditions are met, the present invention stops the adjustment, and the above purpose of saving control resources can be achieved.

[0049] In summary, please refer to Figure 3 , the overall control process of the present invention is as follows: The host computer issues the output load of the resistance device; The control main board applies resistance to the motor to increase the output current of the motor. Here, the resistance is also the output load of the resistance device; The host computer receives the specified control parameters, sends them to the control main board to calculate the target operating parameters, and compares the real-time operating parameters with the target operating parameters; If, after applying resistance to the motor, the magnitude relationship between the real-time operating parameters and the target operating parameters remains unchanged, then in the next adjustment, the adjustment value of the resistance value applied by the control resistance device is the same as the adjustment value of the resistance value applied in the previous time; If, after applying resistance to the motor, the magnitude relationship between the real-time operating parameters and the target operating parameters changes, then in the next adjustment, the adjustment value of the resistance value applied by the control resistance device is half of the adjustment value of the resistance value applied in the previous time; When the adjustment value of the resistance value reaches the minimum adjustment value each time, it is determined that the real-time operating parameters are equal to the target operating parameters, which can support the normal operation of the control main board.

[0050] Its specific process can be introduced as follows: 1. Establish a motor simulation control system, which consists of a main drive integrated board, a motor, a resistance device, and a host computer; 2. Conduct tests on the compressor under normal operating conditions (such as the room temperature and humidity of ordinary users), record all frequency points F and the effective value I of the compressor current. Their relationship is I = f(F). The corresponding current value can be found for each frequency point, and all (F, I) form a set of data tables, which are stored in the host computer for standby.

[0051] 3. Establish a data communication relationship; start the motor simulation control system, detect whether the communication between the host computer and the resistance device is normal, and require the host computer to issue a signal quantity N, which can be used to control the resistance magnitude S. The larger N is, the larger S is; Detect whether the communication between the host computer and the main drive integrated board is normal, require the internal program of the main drive integrated board to compile a protocol, and transmit the operating frequency and real-time output current of the motor to the host computer, and the communication relationship works properly; 4. Control the operation of the motor simulation control system. The motor operates at the operating frequency specified in the operating logic of the air conditioner unit. This operating frequency is related to the actual cooling or heating load demand. The host computer queries the saved operating frequency and output ammeter I = f(F) to obtain the required target output current. 5. The host computer receives the real-time output current and compares it with the required target output current. In the initial state, the real-time output current must be less than the target output current because the real-time output current is very small when the motor is unloaded. 6. The host computer adjusts the resistance value. The adjustment method is as follows: Let the initial value of the resistance value be N. The resistance device applies resistance to the motor. As the rotational resistance of the motor increases, the current will increase. After the real-time output current stabilizes, detect the real-time output current as I1. If I1 < I at this time, it means the resistance value is insufficient, and the resistance value is increased by N. Continue the operation until I1 > I. At this time, the real-time output current exceeds the target output current, indicating that the motor load is too large and needs to be reduced. At this time, the resistance value is adjusted in the reverse direction, that is, reduced by N / 2, and so on. As long as the mutual magnitude relationship between the real-time output current and the target output current changes, immediately adjust in the reverse direction, and the adjustment value is the previous adjustment value / 2.

[0052] 7. Continuously adjust until the real-time output current is equal to the target output current. At this time, the motor can replace the compressor to ensure that the main drive integrated board operates normally without reporting drive faults.

[0053] In the above steps, it should be noted that the initial value N cannot be taken too large to prevent the resistance value from exceeding the load upper limit of the motor after adding N, causing the motor to stall. The actual initial value N can be selected as 10 times the minimum adjustment unit for operation. The host computer can modify the initial value in combination with the accuracy of the resistance device. In addition, there is a certain error in the real-time output current, and it may not be adjusted to be exactly equal to the target output current. At this time, if the adjustment reaches the minimum adjustment unit of the resistance device and the reverse adjustment can no longer be halved, then the real-time output current must be very close to the target output current, and the actual operation effect also meets the requirements of the drive board detection, and the effect of approximately replacing the compressor operation can be achieved.

[0054] The present invention also proposes an air conditioning system having the above motor simulation control system.

[0055] In summary, compared with the prior art, the present invention has at least the following beneficial effects: By adjusting the real-time operating parameters of the motor and simultaneously adjusting the output load of the resistance device, the present invention can replace the compressor to output the target operating parameters, enabling the after-sales fault troubleshooting of the air-conditioning system to be completed without carrying a compressor, greatly improving the efficiency of after-sales fault troubleshooting of the air-conditioning system. At the same time, since there is no need to carry a compressor for after-sales fault troubleshooting, it also avoids the problem of compressor burnout caused by faults in the main control and drive boards of the air-conditioning system, reducing the after-sales cost of the air-conditioning system.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A control method for a motor simulation control system, characterized in that Including: Obtain the specified control parameter of the motor in the motor simulation control system, and obtain the target operating parameter corresponding to the specified control parameter according to the preset corresponding relationship; Adjust the output load size of the resistance device in the motor simulation control system to adjust the real-time operating parameter of the motor to operate at the target operating parameter; When the real-time operating parameter of the motor operates at the target operating parameter, the motor simulation control system replaces the target control system.

2. The control method of the motor simulation control system according to claim 1, wherein The preset corresponding relationship is set according to the corresponding relationship between the specified control parameter and the target operating parameter in the target control system.

3. The control method of the motor simulation control system according to claim 1, characterized in that Adjusting the output load size of the resistance device in the motor simulation control system includes: Detect the real-time operating parameter of the motor, and compare the real-time operating parameter with the target operating parameter; When the real-time operating parameter is greater than the target operating parameter, reduce the output load size of the resistance device, and when the real-time operating parameter is less than the target operating parameter, increase the output load size of the resistance device.

4. The control method of the motor simulation control system according to claim 3, characterized in that Adjusting the output load size of the resistance device in the motor simulation control system further includes: After each adjustment of the output load size of the resistance device, judge the size relationship between the real-time operating parameter and the target operating parameter; When the size relationship between the real-time operating parameter and the target operating parameter is the same as the size relationship between the real-time operating parameter and the target operating parameter after the previous adjustment of the output load size of the resistance device, control the adjustment value of the output load size of the resistance device this time to be the same as the adjustment value of the output load size of the resistance device last time.

5. The control method of the motor simulation control system according to claim 3, characterized in that, Adjusting the output load size of the resistance device in the motor simulation control system further includes: After each adjustment of the output load size of the resistance device, judge the size relationship between the real-time operating parameter and the target operating parameter; When the size relationship between the real-time operating parameter and the target operating parameter is different from the size relationship between the real-time operating parameter and the target operating parameter after the previous adjustment of the output load size of the resistance device, control the adjustment value of the output load size of the resistance device this time to be half of the adjustment value of the output load size of the resistance device last time.

6. The control method of the motor simulation control system according to claim 3, characterized in that, Adjusting the output load size of the resistance device in the motor simulation control system further includes: After each adjustment of the output load size of the resistance device, judge whether the adjustment value of the output load size of the resistance device reaches the minimum adjustment value; When it is determined to be yes, stop adjusting the output load size of the resistance device, and determine that the real-time operating parameter of the motor operates at the target operating parameter at this time.

7. The control method of the motor simulation control system according to claim 1, characterized in that The specified control parameter of the motor is the specified operating frequency of the motor, the target operating parameter of the motor is the target output current of the motor, and the real-time operating parameter of the motor is the real-time output current of the motor.

8. A motor simulation control system, characterized in that, Including a motor, as well as a control main board and a resistance device connected to the motor, and both the control main board and the resistance device are connected to the host computer; The host computer is used to detect the real-time operating parameter of the motor and the output load size of the resistance device; The control main board is used to obtain specified control parameters, obtain target operating parameters corresponding to the specified control parameters according to a preset corresponding relationship, and adjust the output load size of the resistance device so as to adjust the real-time operating parameters of the motor to operate at the target operating parameters.

9. The motor simulation control system according to claim 8, wherein The resistance device is an electric friction disc.

10. An air conditioning system, characterized in that, The air-conditioning system has a motor simulation control system as described in any one of claims 8 to 9.

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