A control method, apparatus, device, and computer-readable storage medium

Abstract

Embodiments of the present application disclose a control method, device, equipment and computer readable storage medium, the method comprising: obtaining the working power of a heating load and an AC power supply signal to be connected to the heating load, obtaining at least one chopping time meeting a preset condition from the obtained AC power supply signal; performing chopping processing on the AC power supply signal based on the at least one chopping time to obtain at least one chopping signal, determining the power of the at least one chopping signal, determining a target power supply signal based on the at least one chopping signal and the power of the at least one chopping signal, and connecting the target power supply signal to the heating load to heat the heating load. Chopping the AC power supply signal based on the chopping time meeting the preset condition can obtain a chopping signal with low harmonic current and good voltage flicker resistance, so that when the heating load is heated and controlled based on the chopping signal and the power of the chopping signal, the harmonic current and voltage flicker interference value are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power control, in particular to a control method and device, equipment and a computer readable storage medium. BACKGROUND

[0002] When heating a heating load (for example, an air fryer, an electric heater, and a rice cooker, etc.), heating control needs to be realized by adjusting the heating power. In the related art, technicians usually use a wave-dumping control method to adjust the power, and a small number of technicians will use a chopper control method to adjust the power. However, when using the two schemes to control the heating of the heating load, harmonic currents are generated, which causes power grid resonance, overcurrent or overvoltage, and affects the service life of the heating load. SUMMARY

[0003] To solve the above technical problems, the embodiments of the present application expect to provide a control method, device, equipment and computer readable storage medium, which can reduce harmonic currents and voltage flicker interference values when heating a heating load.

[0004] The technical scheme of the embodiments of the present application is implemented as follows:

[0005] The embodiments of the present application provide a control method applied to a heating load, comprising:

[0006] obtaining the working power of the heating load, and obtaining an alternating current power supply signal to be connected to the heating load, and obtaining at least one chopping time meeting a preset condition from the alternating current power supply signal;

[0007] based on the at least one chopping time, chopping processing the alternating current power supply signal to obtain at least one chopping signal, and determining the power of the at least one chopping signal;

[0008] based on the at least one chopping signal and the power of the at least one chopping signal, determining a target power supply signal, and the power of the target power supply signal is equal to the working power;

[0009] connecting the target power supply signal to the heating load to heat the heating load.

[0010] The embodiments of the present application provide a control device applied to a heating load, comprising:

[0011] an obtaining module configured to obtain the working power of the heating load, and obtain an alternating current power supply signal to be connected to the heating load, and obtain at least one chopping time meeting a preset condition from the alternating current power supply signal;

[0012] The signal processing module is configured to perform chopping processing on the AC power signal based on the at least one chopping time to obtain at least one chopping signal, and determine the power of the at least one chopping signal.

[0013] The signal determination module is configured to determine a target power signal based on the at least one chopping signal and the power of the at least one chopping signal, wherein the power of the target power signal is equal to the working power.

[0014] The signal access module is configured to access the target power signal to the heating load to heat the heating load.

[0015] Embodiments of the present application provide a control device applied to a heating load, comprising:

[0016] The memory is configured to store executable control instructions.

[0017] The processor is configured to execute the executable control instructions stored in the memory to implement the control method provided by the embodiments of the present application.

[0018] Embodiments of the present application provide a computer readable storage medium applied to a heating load, and the computer readable storage medium has executable control instructions stored thereon, and the executable control instructions are used to cause a processor to execute the control method provided by the embodiments of the present application.

[0019] The control method, device, equipment and computer readable storage medium provided by the embodiments of the present application, by using the technical solution, first, the working power of the heating load and the AC power signal to be accessed to the heating load are obtained, and at least one chopping time meeting a preset condition is obtained from the obtained AC power signal. Then, the AC power signal is chopped based on the at least one chopping time to obtain at least one chopping signal, and the power of the at least one chopping signal is determined. Based on the at least one chopping signal and the power of the at least one chopping signal, a target power signal is determined, and the power of the target power signal is equal to the working power. The target power signal is accessed to the heating load to heat the heating load. In this way, after the AC power signal is chopped based on the chopping time meeting the preset condition, a chopping signal with low harmonic current and good voltage flicker resistance can be obtained, so that when the heating load is controlled based on the chopping signal and the power of the chopping signal, the harmonic current and the voltage flicker interference value are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A flowchart of a control method provided by the embodiments of the present application is shown;

[0021] Figure 2 A schematic diagram of a chopping signal provided by the embodiments of the present application is shown;

[0022] Figure 3 A flow chart of a method for determining a target power supply signal is provided in an embodiment of the present application.

[0023] Figure 4 A wave shape after wave loss processing is provided in an embodiment of the present application.

[0024] Figure 5 A structural schematic diagram of a control device is provided in an embodiment of the present application.

[0025] Figure 6 A schematic diagram of a heating control structure is provided in an embodiment of the present application.

[0026] Figure 7 A flow schematic diagram of a heating control method is provided in an embodiment of the present application.

[0027] Figure 8 A structural schematic diagram of a control device is provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0029] In the following description, “some embodiments / other embodiments” are described, which describe a subset of all possible embodiments, but it can be understood that “some embodiments / other embodiments” can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0030] In the related art, when heating control is performed on a heating load, the incoming mains signal usually needs to be adjusted so that the power of the adjusted signal meets the power required for the heating load to work normally. In practice, the chopping control method or the wave loss control method is usually used to adjust the incoming mains signal. However, when the chopping control or the wave loss control method is used alone to adjust the incoming mains signal, it is difficult to obtain an ideal working power, and the signal will be distorted and resonance will occur due to output impedance or nonlinear load and other reasons during transmission of the signal, thereby causing overcurrent or overvoltage, burning electronic components or equipment.

[0031] The embodiments of the present application provide a control method, which is applied to a heating load to effectively control the heating load and reduce harmonic current and voltage flicker interference value.

[0032] Next, the control method provided by the embodiments of the present application will be described. The method can be applied to a heating load, which can be an air fryer, an electric rice cooker, an electric induction cooker, or other electric appliances. For example, Figure 1As shown, a flowchart of a control method provided by an embodiment of the present application is shown, and the method comprises the following steps:

[0033] S101, the working power of the heating load is obtained, and the AC power supply signal to be connected to the heating load is obtained, and at least one chopping time meeting the preset condition is obtained from the AC power supply signal.

[0034] In some embodiments, the heating load can be an electrical appliance device that needs to work through heating, for example, the heating load can be an electric rice cooker, an induction cooker, an electric water heater, an air fryer, etc. The working power of the heating load can be the active power, or the maximum power when the heating load is normally working, i.e. the rated power. The AC power supply signal can be a mains signal transmitted to the heating load device through the power grid. During transmission, the AC power supply signal can be distorted due to nonlinear loads in the circuit and other factors, generating harmonic currents. Since the AC power supply signal is used to heat the heating load, it is necessary to adjust the AC power supply signal to control the heating power.

[0035] It should be noted that the chopping time can be the length of time corresponding to the AC power supply signal in each time period, and the unit can be milliseconds. For example, for a mains supply with an AC voltage of 220 volts (V) and a power frequency of 50 hertz (Hz), the chopping time can be any value between 0 milliseconds and 20 milliseconds. The at least one chopping time meeting the preset condition can be the chopping time corresponding to the AC power supply signal whose electrical indicators (such as voltage or current) meet the national standard after the AC power supply signal corresponding to the chopping time is tested by electromagnetic compatibility (EMC) testing. The chopping time meeting the preset condition is a chopping time suitable for low harmonic current and good voltage flicker resistance. In practice, the chopping time meeting the preset condition obtained by EMC testing can be one or more.

[0036] S102, the AC power supply signal is chopped based on the at least one chopping time to obtain at least one chopping signal, and the power of the at least one chopping signal is determined.

[0037] It should be noted that since the chopping time meeting the preset condition is suitable for low harmonic current and good voltage flicker resistance, the AC signal can be chopped based on the obtained chopping time to obtain an AC power supply signal with low harmonic current and good voltage flicker resistance, i.e. a chopping signal. After obtaining the chopping signal, the power of the chopping signal can be calculated to obtain the power of the chopping signal. Exemplarily, the power P1 of the chopping signal can be calculated according to the formula where t represents the chopping time, and π is the period of the AC power supply signal.

[0038] As shown in Figure 2 Fig. 1 is a schematic diagram of a chopping signal provided by an embodiment of the present application, and Figure 2 As can be seen, in each power supply signal cycle, two chopping times are selected to perform chopping processing on the alternating current power supply signal. The chopping processing can be to remove the signal corresponding to the chopping time in the alternating current power supply signal, for example, to change a certain segment of the sinusoidal signal corresponding to the chopping time into a pulse signal, and the final power supply signal obtained can be used to control the on-off of the alternating current signal power supply switch to remove the alternating current power supply signal corresponding to the chopping time.

[0039] It can be understood that, since the alternating current power supply signal will generate harmonic current in the process of circuit transmission, by using the chopping time meeting the preset condition to perform chopping processing on the alternating current power supply signal, a power supply signal with low harmonic current and small voltage flicker interference value can be obtained.

[0040] S103, determining a target power supply signal based on at least one chopping signal and the power of the at least one chopping signal.

[0041] After the alternating current power supply signal is processed by step S102, one or more chopping signals and the power of the chopping signals can be obtained. Since the obtained chopping signals are all low harmonic current and have good voltage flicker resistance, the obtained chopping signals can be further processed to obtain a power supply signal with a power equal to the heating load power. It should be noted that the target power supply signal can be a signal obtained by processing the chopping signal, and the power of the target power supply signal is equal to the working power.

[0042] In some embodiments, the way of processing the obtained chopping signal can be to combine the plurality of chopping signals by weighting to obtain the target power supply signal, or to further perform wave loss processing on the chopping signal to obtain a wave loss signal, and to combine the target power supply signal based on the combination of the wave loss signal or the combination of the wave loss signal and the chopping signal. Of course, the way of processing the obtained chopping signal is only exemplary and is not limited.

[0043] S104, connecting the target power supply signal to the heating load to heat the heating load.

[0044] The power of the target power supply signal is equal to the power when the heating load is normally working, so the target power supply signal can be directly connected to the heating load. Specifically, the target power supply signal can be connected to the heating module of the heating load to heat the heating load by the heating wire coil.

[0045] In some embodiments, after acquiring the AC power signal of the load to be connected to the heating system, the AC power signal can be rectified to remove interference signals from the AC power signal. The interference signals can be noise signals in the AC power signal.

[0046] In other embodiments, when chopping an AC power signal based on at least one chopping time, the AC power signal can be subjected to zero-crossing detection processing. Through zero-crossing detection processing, the AC power signal corresponding to the chopping time is determined, and the AC power signal is chopped based on the result of the zero-crossing detection.

[0047] In this embodiment, the operating power of the heating load and the AC power signal of the load to be connected are obtained, and at least one chopping time meeting preset conditions is obtained from the obtained AC power signal. The AC power signal is then chopped based on the at least one chopping time to obtain at least one chopped signal, and the power of the at least one chopped signal is determined. A target power signal is determined based on the at least one chopped signal and its power. The target power signal is then connected to the heating load to heat it. Thus, by chopping the AC power signal based on the chopping time meeting preset conditions, a chopped signal with low harmonic current and good anti-voltage flicker capability can be obtained, reducing harmonic current and voltage flicker interference values ​​when controlling the heating load based on the chopped signal and its power.

[0048] like Figure 3 The diagram shown is a flowchart of a method for determining a target power signal according to an embodiment of this application. In some embodiments, the target power signal is determined based on at least one chopper signal and the power of at least one chopper signal. That is, S103 can be implemented by the following steps S201-S227, which are described below.

[0049] S201, Iterate through the power of at least one chopper signal.

[0050] By chopping the signal using a chopping time that meets preset conditions, multiple chopped signals can be obtained, and the power of each chopped signal can be determined. After obtaining the power of each chopped signal, the power of each chopped signal can be iterated sequentially.

[0051] S202. Determine whether a first target chopping signal exists in at least one chopping signal.

[0052] Wherein, the power of the first target chopping signal is equal to the operating power. If the first target chopping signal is present in at least one chopping signal, proceed to step S203. If the first target chopping signal is not present in at least one chopping signal, proceed to step S204.

[0053] S203, determine the first target chopping signal as the target power supply signal.

[0054] The first target chopping signal is a chopping signal with a power value equal to the working power of the heating load. That is, in the process of traversing all the powers of the chopping signals, if there is a signal with a power value equal to the working power of the heating load, the signal is directly taken as the target power supply signal.

[0055] In some embodiments, the first target chopping signal can be one or more chopping signals with a power equal to the working power. In practice, after obtaining a first chopping signal, the traversal can be stopped, and the first target chopping signal is taken as the target power supply signal for accessing the heating load, or the traversal of the remaining chopping signals can be continued, and finally all the first target chopping signals are obtained, and any one of the first target chopping signals is selected as the target power supply signal for accessing the heating load.

[0056] For example, the power P2 of the heating load is 300w, and after chopping the AC power supply signal, N chopping signals are obtained, N is a positive integer greater than 2, and the corresponding powers of the N chopping signals are P 11 , P 12 , ...P 1N , After traversing the powers of the N chopping signals, it is found that the value of P 12 is equal to the working power of the heating load, i.e., P 12 =P2, then the chopping signal corresponding to P 12 is the first target chopping signal, and the chopping signal corresponding to P 12 is taken as the target power supply signal.

[0057] It can be understood that in the embodiments of the present application, the chopping signal with low harmonic current and good voltage flicker resistance is obtained by chopping the chopping signal using the chopping time meeting the preset condition, and the chopping signal with a power value equal to the working power is directly taken as the target power supply signal for accessing the heating load, which can improve the electromagnetic compatibility of the heating load.

[0058] S204, determine a set of power adjustment ratios meeting the preset condition from the AC power supply signal.

[0059] After traversing all the chopping signals, if no chopping signal with a power equal to the working power is found, the AC power supply signal is subjected to EMC testing based on the power adjustment ratio, and a set of power adjustment ratios corresponding to the AC power supply signal with electrical indicators (such as voltage or current) meeting the national standards is obtained.

[0060] The power adjustment ratio set includes a plurality of power adjustment ratios meeting preset conditions. The power adjustment ratios meeting preset conditions are power adjustment ratios suitable for low harmonic current and good voltage flicker resistance. The power adjustment ratio can be any proper fraction, such as 1 / 2, 1 / 3, 2 / 3, and 3 / 4. In practice, the power adjustment ratios meeting preset conditions obtained through EMC testing can be one or more. All the power adjustment ratios meeting preset conditions form the power adjustment ratio set, and the power adjustment ratio set includes at least one power adjustment ratio meeting preset conditions. Therefore, the power adjustment ratio set is not empty.

[0061] S205. Randomly selecting at least one target power adjustment ratio from the power adjustment ratio set and randomly selecting at least one second target chopping signal from the at least one chopping signal.

[0062] It should be noted that the target power adjustment ratio can be any one or more power adjustment ratios randomly selected from the power adjustment ratio set, that is, any subset of the power adjustment ratio set. For example, the power adjustment ratio set Q includes three power adjustment ratios ratio1, ratio2, and ratio3 meeting preset conditions. The target power adjustment ratio selected from the power adjustment ratio set Q can be any one of the subsets {ratio1}, {ratio2}, {ratio3}, {ratio1, ratio2}, {ratio1, ratio3}, {ratio2, ratio3}, and {ratio1, ratio2, ratio3}, that is, any one of the seven subsets included in the power adjustment ratio set. The second target chopping signal can be one or more chopping signals selected from all the chopping signals without the first chopping signal.

[0063] S206. Performing wave discarding processing on the at least one second target chopping signal based on the at least one target power adjustment ratio to obtain at least one first wave discarding signal.

[0064] In some embodiments, the wave discarding processing can be chopping processing on the selected chopping signal, for example, discarding the peak or trough of a sine wave, and the part of the sine wave chopped off is a signal with equal voltage or current value. Figure 4 FIG. 6 shows a wave discarding waveform after wave discarding processing provided by an embodiment of the application, Figure 4 is a chopping waveform obtained by chopping processing to remove a sine wave corresponding to a chopping time on the negative half axis of the sine wave. Based on the chopping waveform, wave discarding processing is performed using a power adjustment ratio of 1 / 2, and the trough part of the chopping waveform is discarded to obtain a wave discarding waveform.

[0065] It should be noted that the target power adjustment ratio selected from the set of power adjustment ratios can be one or more, and the second target chopping signal can also be one or more. Therefore, one target power adjustment ratio can be used for chopping processing of one chopping signal, one target power adjustment ratio can be used for chopping processing of multiple chopping signals, multiple target power adjustment ratios can be used for chopping processing of one chopping signal, and multiple target power adjustment ratios can be used for chopping processing of multiple chopping signals. The first chopping signal can be the signal obtained after chopping processing.

[0066] For example, the power adjustment ratio selected from the set of power adjustment ratios is ratio1, and the second target chopping signal is C 11 and C 12 , then the chopping processing of C 11 and C 12 may include using the power adjustment ratio ratio1 to obtain the first chopping signal by chopping C 11 , and using the power adjustment ratio ratio1 to obtain the first chopping signal by chopping C 12 ; for another example, the power adjustment ratio selected from the set of power adjustment ratios is ratio1 and ratio2, and the second target chopping signal is C 11 , then the chopping processing of C 11 may include using the power adjustment ratio ratio1 to obtain the first chopping signal by chopping C 11 , and using the power adjustment ratio ratio2 to obtain the first chopping signal by chopping C 11 .

[0067] S207, determine the power of at least one first chopping signal.

[0068] After obtaining the first chopping signal, the power of the first chopping signal needs to be calculated. For example, the power of the chopping signal C 11 is P 11 , the power of the first chopping signal obtained by using the power adjustment ratio ratio1 to chop the chopping signal C 11 is P 31 , then P 31 = P 11 *ratio1.

[0069] S208, determine whether there is a first target chopping signal in the at least one first chopping signal.

[0070] The first target chopping signal can be the first chopping signal with a power value equal to the heating load power. If the first target chopping signal exists in the at least one first chopping signal, go to step S209; if the first target chopping signal does not exist, go to step S210.

[0071] S209, determining the first target chopped wave signal as the target power supply signal.

[0072] It should be noted that the power of the first target chopped wave signal is equal to the working power. When there is a first chopped wave signal with a power value equal to the working power, it can be determined as the target power supply signal.

[0073] Exemplarily, for example, when three first chopped wave signals are obtained after the second chopped wave signal is processed by the chopping processing, the powers of the three first chopped wave signals are P 31 , P 32 and P 33 , wherein P 32 and P 33 are equal to the power P2 of the heating load, P 32 and P 33 each correspond to the first target chopped wave signal, and thus the chopped wave signal corresponding to P 32 may be determined as the target power supply signal, and the chopped wave signal corresponding to P 33 may be determined as the target power supply signal.

[0074] It can be understood that in the embodiments of the present application, the chopped wave signal with low harmonic current and good voltage flicker resistance can be obtained by processing the chopping signal, and the chopped wave signal with a power value equal to the working power is connected to the heating load as the target power supply signal, which can improve the electromagnetic compatibility of the heating load.

[0075] S210, obtaining the weight corresponding to each of the at least one first chopped wave signal.

[0076] In some embodiments, S210 can be performed after S207, when the power of all first chopped wave signals is calculated, and no chopped wave signal with a power value equal to the working power of the heating load is found, i.e. there is no first target chopped wave signal, then the weight corresponding to each of the first chopped wave signals can be obtained, the weight corresponding to each of the first chopped wave signals is a positive integer, which can be any positive integer value preset, and the weights corresponding to all first chopped wave signals can be the same or different.

[0077] S211, determining at least one first candidate chopped wave power based on the power of the at least one first chopped wave signal and the weight corresponding to each of the at least one first chopped wave signal.

[0078] It should be noted that the first candidate chopped wave power can be a combined power obtained by weighting combination of the power of the first chopped wave signal and the weight corresponding to the first chopped wave signal, for example, there are two first chopped wave signals with powers P 31 and P 34The weights for the two are m and n, respectively. Therefore, the first candidate loss power after weighted combination is m*P. 31 +n*P 34 .

[0079] S212. Does there exist a target loss power equal to the operating power among at least one first candidate loss power?

[0080] The target drop power can be a first candidate power whose power value is equal to the heating load power. If there is a target drop power equal to the working power among at least one first candidate drop power, proceed to step S213; if there is no target drop power equal to the working power, proceed to step S214.

[0081] S213. Determine at least one first loss signal corresponding to the target loss power as the target power signal.

[0082] For multiple first lost signals and their corresponding weights, multiple first candidate powers can be obtained. Among all the obtained first candidate powers, if there is one or more first candidate powers that are equal to the working power, then this one or more first candidate powers can be used as the target lost signal power, and the one or more first lost signals corresponding to the target lost signal power can be used as the target power signal.

[0083] For example, the first candidate loss power determined by S211 includes m*P 31 +n*P 34 and m*P 31 +n*P 34 +k*P 36 +n*P 39 And only m*P 31 +n*P 34 +k*P 36 +n*P 39 The value is equal to the working power P2, that is, it satisfies m*P 31 +n*P 34 +k*P 36 +n*P 39 =P2, then m*P 31 +n*P 34 +k*P 36 +n*P 39 The calculated power value is the target loss power, which can then be used to calculate m*P. 31 +n*P 34 +k*P 36 +n*P 39 The corresponding dropped signal is used as the target power signal.

[0084] It can be understood that, in the embodiments of the present application, the chopping signal is processed by the wave loss processing to obtain a wave loss signal, the obtained wave loss signal is combined by the power adjustment to obtain a wave loss signal with a power value equal to the working power, the wave loss signal obtained by the power adjustment combination is a wave loss signal with low harmonic current and good voltage flicker resistance, and the wave loss signal is connected to the heating load as the target power supply signal, so that the electromagnetic compatibility of the heating load can be improved.

[0085] S214, randomly selecting at least one target power adjustment ratio from the power adjustment ratio set again to obtain an updated at least one target power adjustment ratio.

[0086] In some embodiments, S214 can randomly select one or more target power adjustment ratio subsets from the power adjustment ratio set again after S211, after finding that there is no first candidate wave loss power with a power value equal to the working power after searching for all determined first candidate wave loss powers. The selected target power adjustment ratio is different from the target power adjustment ratio subset selected in S205, and can be any one or more power adjustment ratios in the power adjustment ratio set except the target power adjustment ratio subset selected in S205. For example, the target power adjustment ratio selected in S205 is {ratio1} and {ratio1, ratio2}, and the at least one target power adjustment ratio randomly selected from the power adjustment ratio set again can be {ratio2} and {ratio1, ratio3}. {ratio2} and {ratio1, ratio3} are the updated target power adjustment ratios.

[0087] S215, based on the updated at least one target power adjustment ratio, processing at least one second target chopping signal by wave loss processing to obtain at least one second wave loss signal.

[0088] In some embodiments, S215 is similar to S206, except that one or more target power adjustment ratios used are different, that is, the target power adjustment ratio is updated, and the one or more wave loss signals obtained by processing the second chopping signal based on the updated target power adjustment ratio are the second wave loss signals.

[0089] S216, determining whether there is a target wave loss signal determined based on the at least one second wave loss signal.

[0090] The target wave loss signal can be a second wave loss signal with a power value equal to the working power of the heating load. When there is a target wave loss signal determined based on the at least one second wave loss signal, step S217 is entered, and if there is no target wave loss signal determined based on the at least one second wave loss signal, S218 is entered.

[0091] S217, determining the at least one second wave loss signal corresponding to the target wave loss signal as the target power supply signal.

[0092] It should be noted that, after the second target chopping signal is processed based on the updated target power adjustment ratio, the power of the obtained second chopping signal is calculated, and if there is a second chopping signal with a power value equal to the working power, the second chopping signal is the target chopping signal, the power of the target chopping signal is equal to the working power, and the target chopping signal can be one or more. The second chopping signal corresponding to one or more target chopping signals can be used as a target power signal.

[0093] S218, obtaining the weight corresponding to each of the at least one second chopping signal.

[0094] In some embodiments, S218 can be performed after S215, when one or more second chopping signals are obtained, and the power values of all second chopping signals are not equal to the working power of the heating load, i.e. there is no target chopping signal, then the weight corresponding to each of the second chopping signal can be obtained. The weight corresponding to each of the at least one second chopping signal is a positive integer, which can be any positive integer value set in advance, and the weight corresponding to each of the second chopping signal can be the same or different.

[0095] S219, determining at least one second candidate chopping power based on the power of the at least one second chopping signal and the weight corresponding to each of the at least one second chopping signal.

[0096] It should be noted that the second candidate chopping power can be a combined power obtained by weighting and combining the second chopping power and the weight corresponding to the second chopping signal. For example, there are three second chopping signals with powers P 35 , P 38 and P 39 , and the weights corresponding to the three second comparison signals are m, n and k, respectively. Then the second candidate chopping power after weighting and combining is m*P 35 +k*P 38 +n*P 39 .

[0097] S220, determining whether there is a target chopping power equal to the working power in the at least one second candidate chopping power.

[0098] The target chopping power can be a second candidate chopping power with a power value equal to the working power of the heating load. If there is a target chopping power equal to the working power in the at least one second candidate chopping power, step S221 is entered; if there is no target chopping power equal to the working power, step S222 is entered.

[0099] S221, determining the at least one second chopping signal corresponding to the target chopping power as the target power signal.

[0100] For the plurality of second chopping signals and the respective corresponding weights, a plurality of second candidate powers can be obtained, and among all the obtained second candidate powers, if there is one or more second candidate powers equal to the working power of the heating load, then the one or more second candidate powers can be taken as the target chopping power, and the one or more second chopping signals corresponding to the target chopping power can be taken as the target power supply signal.

[0101] S222, randomly selecting at least one second target chopping signal from the at least one chopping signal again to obtain updated at least one second target chopping signal.

[0102] In some embodiments, the target chopping power is the power corresponding to the second candidate chopping signal equal to the working power, and S222 can be performed after S219, when there is no second candidate chopping power equal to the working power among the one or more second candidate chopping powers determined through S219, then one or more second target chopping signals can be selected from the one or more chopping signals again, and the selected second target chopping signal is different from the at least one second target chopping signal randomly selected in S205, and thus can be regarded as an updated second target chopping signal.

[0103] S223, performing chopping processing on the updated at least one second target chopping signal based on the at least one target power adjustment ratio randomly selected from the set of power adjustment ratios to obtain at least one chopping signal.

[0104] After the one or more second target chopping signals are selected, the one or more target power adjustment ratios randomly selected from the set of power adjustment ratios can be used to perform chopping processing on the updated one or more chopping signals to obtain one or more chopping signals after chopping processing.

[0105] It should be noted that the at least one target power adjustment ratio randomly selected from the set of power adjustment ratios can be the same as or different from the at least one target power adjustment ratio randomly selected in S205.

[0106] S224, determining whether there is a target chopping signal determined based on the at least one chopping signal.

[0107] The target chopping signal can be a chopping signal with a power value equal to the working power of the heating load, and if there is a target chopping signal determined based on the at least one chopping signal, step S225 is entered; if there is no target chopping signal determined based on the at least one chopping signal, step S226 is entered.

[0108] S225, determining the at least one chopping signal corresponding to the target chopping signal as the target power supply signal.

[0109] In some embodiments, if there is a wave loss signal whose power value is equal to the working power in the one or more wave loss signals obtained through S223, the wave loss signal can be a target wave loss signal, the power of the target wave loss signal is equal to the working power, and the target wave loss signal can be one or more, each of which can be a target power signal.

[0110] S226, obtaining the respective weight of each of the at least one wave loss signal.

[0111] In some embodiments, S226 can occur after S223, if there is no wave loss signal whose power value is equal to the working power in all wave loss signals obtained through S223, that is, there is no target wave loss signal, then the respective weight of each of the wave loss signals can be obtained. The respective weight of each of the at least one wave loss signal is a positive integer, which can be any positive integer value set in advance, and the respective weight of each of the at least one wave loss signal can be the same or different.

[0112] S227, determining at least one candidate wave loss power based on the power of the at least one wave loss signal and the respective weight of each of the at least one wave loss signal.

[0113] It should be noted that the candidate wave loss power can be a combined power obtained by weighting and combining the power of one or more wave loss signals and the weight corresponding to the one or more wave loss signals, and the candidate wave loss power is different from the first candidate wave loss power determined in S211.

[0114] S228, if there is a target wave loss power equal to the working power in the at least one candidate wave loss power, determining the at least one wave loss signal corresponding to the target wave loss power as the target power signal.

[0115] When there is one or more candidate wave loss powers equal to the heating load target power in the one or more candidate wave loss powers determined in S227, the one or more candidate wave loss powers can be target wave loss powers, and the one or more wave loss signals corresponding to the target wave loss powers can be target power signals.

[0116] It can be understood that the embodiments of the present application combine the wave loss and chopping two power adjustment modes, and can obtain the final working power by adjusting and combining the chopping signals or the wave loss signals or the combination of the wave loss signals, that is, by adjusting and combining a plurality of suitable chopping signals and wave loss signals. The power obtained by adjusting and combining the chopping signals and the wave loss signals can meet the low harmonic current and good voltage flicker resistance, and the EMC capability of the heating load is improved.

[0117] In some embodiments, if there is no target chopping power equal to the working power in the at least one candidate chopping power, one or more target power ratios can be randomly selected again from the set of power ratios, to obtain updated one or more target power ratios, i.e., steps similar to those after S214 and S215 are performed until a chopping signal with a power value equal to the working power is found.

[0118] In some other embodiments, when all target power ratios in the set of power ratios have been selected, and a second target chopping signal has been randomly selected from the at least one chopping signal, but a chopping signal with a power value equal to the working power has still not been found, it can be determined that there is no target power signal meeting the requirements.

[0119] Embodiments of the present application also provide a control device, which is applied to a heating load, Figure 5 A structural schematic diagram of a control device provided by embodiments of the present application is shown in Figure 5 The control device 1 includes:

[0120] The acquisition module 11 is configured to acquire a working power of the heating load, and acquire an alternating power signal to be connected to the heating load, and acquire at least one chopping time meeting a preset condition from the alternating power signal.

[0121] The signal processing module 12 is configured to perform chopping processing on the alternating power signal based on the at least one chopping time, to obtain at least one chopping signal, and determine a power of the at least one chopping signal.

[0122] The signal determination module 13 is configured to determine a target power signal based on the at least one chopping signal and the power of the at least one chopping signal, wherein the power of the target power signal is equal to the working power.

[0123] The signal access module 14 is configured to connect the target power signal to the heating load, to heat the heating load.

[0124] In some embodiments of the present application, the signal determination module 13 is further configured to traverse the power of the at least one chopping signal, and if there is a first target chopping signal in the at least one chopping signal, determine the first target chopping signal as the target power signal, wherein the power of the first target chopping signal is equal to the working power.

[0125] In some embodiments of the present application, the signal determination module 13 is further configured to, if there is no first target chopping signal in the at least one chopping signal, determine a set of power adjustment ratios meeting a preset condition from the AC power signal, the set of power adjustment ratios being non-empty; randomly select at least one target power adjustment ratio from the set of power adjustment ratios, and randomly select at least one second target chopping signal from the at least one chopping signal; perform wave loss processing on the at least one second target chopping signal based on the at least one target power adjustment ratio to obtain at least one first wave loss signal; determine the power of the at least one first wave loss signal; and if there is a first target wave loss signal in the at least one first wave loss signal, determine the first target wave loss signal as the target power signal, and the power of the first target wave loss signal is equal to the working power.

[0126] In some embodiments of the present application, the signal determination module 13 is further configured to, if there is no first target wave loss signal in the at least one first wave loss signal, obtain a weight corresponding to each of the at least one first wave loss signal, the weight being a positive integer; determine at least one first candidate wave loss power based on the power of the at least one first wave loss signal and the weight corresponding to each of the at least one first wave loss signal; and if there is a target wave loss power equal to the working power in the at least one first candidate wave loss power, determine the at least one first wave loss signal corresponding to the target wave loss power as the target power signal.

[0127] In some embodiments of the present application, the signal determination module 13 is further configured to, if there is no target wave loss power equal to the working power in the at least one first candidate wave loss power, randomly select at least one target power adjustment ratio from the set of power adjustment ratios again to obtain updated at least one target power adjustment ratio; perform wave loss processing on the at least one second target chopping signal based on the updated at least one target power adjustment ratio to obtain at least one second wave loss signal; and when there is a target wave loss signal determined based on the at least one second wave loss signal, determine the at least one second wave loss signal corresponding to the power of the target wave loss signal as the target power signal, and the power of the target wave loss signal is equal to the working power.

[0128] In some embodiments of this application, the signal determination module 13 is further configured to: if there is no target lost signal among the at least one second lost signal, obtain the weights corresponding to each of the at least one second lost signal, wherein the weights corresponding to each of the at least one second lost signal are positive integers; determine at least one second candidate lost signal power based on the power of the at least one second lost signal and the weights corresponding to each of the at least one second lost signal; and if there is a target lost signal power equal to the operating power among the at least one second candidate lost signal power, determine the at least one second lost signal corresponding to the target lost signal power as the target power signal.

[0129] In some embodiments of this application, the signal determination module 13 is further configured to: if there is no target loss power equal to the operating power among the at least one second candidate loss power, randomly select at least one second target chopping signal from the at least one chopping signal again to obtain an updated at least one second target chopping signal; perform loss processing on the updated at least one second target chopping signal based on at least one target power regulation ratio randomly selected from the power regulation ratio set to obtain at least one loss signal; and when there is a target loss signal determined based on the at least one loss signal, determine the at least one loss signal corresponding to the target loss signal as a target power signal, wherein the power of the target loss signal is equal to the operating power.

[0130] In some embodiments of this application, the signal determination module 13 is further configured to: if there is no target lost signal among the at least one lost signal, obtain the weights corresponding to each of the at least one lost signal, wherein the weights corresponding to each of the at least one lost signal are positive integers; determine at least one candidate lost signal power based on the power of the at least one lost signal and the weights corresponding to each of the at least one lost signal; and if there is a target lost signal power equal to the operating power among the at least one candidate lost signal power, determine at least one lost signal corresponding to the target lost signal power as the target power signal.

[0131] The implementation process of the embodiments of this application in a practical application scenario will be described below.

[0132] like Figure 6 The diagram shown is a schematic of a heating control structure provided in an embodiment of this application. The heating control structure is applied to a heating load. The heating control structure 2 includes an AC power module 21 (acquisition module), a rectifier module 22, a zero-crossing detection module 23, a control module 24, a switch module 25, a coil module 26, and a heated body module 27 (heating load).

[0133] The AC power module 21 is configured to receive an AC power signal, the rectification module 22 is configured to rectify the AC power signal, remove interference signals in the AC power signal, the zero-crossing detection module 23 is configured to detect a zero-crossing signal in the AC power signal, the control module 24 is configured to control the chopping processing or the wave loss processing of the AC power signal, the switch module 25 is configured to chop or lose the corresponding AC power signal by turning on or off the chopping time or the power adjustment ratio, so as to realize the chopping processing or the wave loss processing, and the coil module 26 is configured to transmit the heat generated by the chopped or lost wave processing signal, and the heated body module 27 can be part of the load, configured to receive the heat transmitted by the coil module 26, and heat the load.

[0134] In some embodiments, as shown in Figure 7 Fig. 1 is a flow diagram of a heating control method provided by an embodiment of the present application, applied to a heating load, and the method comprises the following steps:

[0135] S301, obtaining an AC power signal, a target power (a working power of the heating load), and all chopping angles (chopping times) in the AC power signal suitable for low harmonic current and good voltage flicker resistance (preset conditions).

[0136] The AC power module 21 can obtain the AC power signal, rectify the obtained AC power signal, and remove interference signals in the AC power signal. Through EMC testing, all chopping angles delay_t (at least one chopping time meeting the preset conditions is obtained from the AC power signal) suitable for low harmonic current and good voltage flicker resistance can be screened out, and the corresponding power is the reference power P1. When dalay_t = 0, P1 is the rated power P.

[0137] S302, obtaining all power adjustment period ratios (target power adjustment ratios) in the AC power signal suitable for low harmonic current and good voltage flicker resistance (preset conditions).

[0138] Through EMC testing, all power adjustment period ratios ratio (a power adjustment ratio set meeting the preset conditions is determined from the AC power signal) suitable for low harmonic current and good voltage flicker resistance can be screened out. The ratio = 1 / 2, 1 / 3, 2 / 3, etc. are all power adjustment period ratios meeting the harmonic current and voltage flicker tests.

[0139] S303, determining the reference power (the power of the chopping signal) based on the obtained chopping angle, and determining the wave loss power (the power of the wave loss signal) based on the obtained power adjustment period ratio.

[0140] After screening all chopping angles delay_t suitable for low harmonic current and good voltage flicker resistance, the corresponding power is the reference power P1 (determining the power of at least one chopping signal), when dalay_t = 0, P1 is the rated power P corresponding to the AC power signal. The chopping angle delay_t is preferably 0-8ms, and the power is used as the reference power for power regulation. By setting different delay_t, the reference power after chopping can be obtained by the formula The calculation result (based on at least one chopping time to chop the AC power signal to obtain at least one chopping signal, and determine the power of at least one chopping signal) is obtained, wherein t is delay_t, t = 0, indicating no chopping, i.e. full power, and different delay_t all meet the harmonic current and voltage flicker test.

[0141] When P1 = P, after screening all power regulation cycle ratios ratio (target power regulation ratio) suitable for low harmonic current and good voltage flicker resistance, the corresponding wave loss power is P2 = ratio*P1 (based on at least one target power regulation ratio, wave loss processing is performed on at least one second target chopping signal to obtain at least one first wave loss signal; determining the power of at least one first wave loss signal).

[0142] S304, combining the chopping power and the wave loss power so that the combined power (target wave loss power) is equal to the target power.

[0143] If the target power required is P3, the power P1 and the power P2 are combined (based on the power of at least one first wave loss signal and the weight corresponding to each of the at least one first wave loss signal, to determine at least one first candidate wave loss power), which can achieve the target power P3. Because the harmonic current and voltage flicker interference value of P1 and P2 are low, the power demand can be met while meeting the harmonic current and voltage flicker standards.

[0144] It should be noted that because the power P1 obtained by chopping meets the test, and P2 also meets the test, when the two are combined, they must meet the test. Multiple suitable P1 and P2 can be combined for power regulation to obtain the final P3. For example, the power regulation cycle ratio is ratio, and the reference power P1 (the power of the first wave loss signal) is obtained after chopping processing. If P3 = ratio*P1, then by wave loss processing on the chopping signal corresponding to the reference power through the power regulation cycle ratio, the wave loss signal obtained can be used as the power signal for connecting the heating load (if there is a first target wave loss signal in the at least one first wave loss signal, the first target wave loss signal is determined as the target power signal).

[0145] Exemplarily, for example, assuming that the rated power of the AC power supply signal is P=1000w, if the target power P3=300w is required, the chopping angle delay_t=2ms can be used to chop the AC power supply signal, and the chopping angle delay_t=2ms is brought into the formula reference power formula P1=900w, P2=ratio*P1=300W=P3 can be calculated; for another example, assuming that the rated power of the AC power supply signal is P=1000w, if the target power P3=400w is required, the chopping angle delay_t=0ms can be used, and the formula is brought into P1=1000w can be calculated, and the power is further adjusted in the form of wave loss to obtain the equation P3=P2=(M*ratio1*P1+N*ratio2*P1) / (M+N) (determining at least one first candidate wave loss power based on the power of at least one first wave loss signal and the respective weight of at least one first wave loss signal), wherein ratio1 and ratio2 can take any value meeting the test requirements, for example, 1 / 2, 1 / 3 and 2 / 3, etc., M and N are preset weight parameters (the respective weight of the first wave loss signal), which are any positive integer, and can be taken as meeting the equation P3=P2=(M*ratio1*P2+N*ratio2*P2) / (M+N), for example, when ratio1=1 / 3, ratio2=1 / 2, M=N=5, the equation is established.

[0146] Exemplarily, for example, the power of the chopped signal after the chopping processing is P1a, P1b, P1c,..., the corresponding preset weight parameters in the power adjustment combination processing process are M, N, X,..., in a feasible manner, the power adjustment combination can make P3=(M*ratio1*P1a+N*ratio2*P1b+X*ratio3*P1c…) / (M+N+X…), wherein the reference power P1 can be any power value corresponding to the AC power supply signal after the chopping processing under the premise that the chopping time meets 0 to 8 milliseconds.

[0147] The embodiment of the application further provides a control device, which is applied to a heating load, Figure 8 The structure diagram of the control device provided by the embodiment of the application is shown in the figure Figure 8 As shown in the figure, the control device 3 comprises: a memory 31 for storing executable control instructions; and a processor 32 for executing the executable control instructions stored in the memory to implement the method provided by the embodiment of the application, for example, to implement the control method provided by the embodiment of the application.

[0148] The embodiment of the present application provides a computer readable storage medium, which stores executable control instructions, and is used for causing a processor 32 to execute the method provided by the embodiment of the present application, for example, the control method provided by the embodiment of the present application.

[0149] Those skilled in the art should understand that the embodiment of the present application can be provided as a method, device (system) or computer program product. Therefore, the present application can adopt a hardware embodiment, a software embodiment or an embodiment combining software and hardware aspects. Moreover, the present application can adopt a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage and optical storage) containing computer usable program codes.

[0150] The present application is described with reference to flowcharts and / or block diagrams of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be realized by computer program instructions. These computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing devices to produce a machine, so that the instructions executed by the computer or other programmable data processing devices produce a device implemented in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in the flow(s) or block(s).

[0151] These computer program instructions can also be stored in a computer readable storage medium capable of guiding a computer or other programmable data processing devices to work in a specific manner, so that the instructions stored in the computer readable storage medium produce a product including instruction apparatus, which realizes the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in the flow(s) or block(s).

[0152] These computer program instructions can also be loaded into a computer or other programmable data processing device, so that a series of operation steps are performed on the computer or other programmable device to produce a computer implemented process, so that the instructions executed on the computer or other programmable device provide a process for realizing the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 an apparatus that performs the functions specified in the flow(s) or block(s).

[0153] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A control method applied to a heating load, characterized in that, include: The operating power of the heating load is obtained, and the AC power signal of the heating load to be connected is obtained. At least one chopping time that meets the preset conditions is obtained from the AC power signal. The AC power signal is the mains power signal transmitted to the heating load via the power grid; The preset conditions include: passing an electromagnetic compatibility test to ensure that the AC power signal corresponding to the at least one chopping time meets the requirements of low harmonic current and anti-voltage flicker. The AC power signal is chopping based on the at least one chopping time to obtain at least one chopped signal, and the power of the at least one chopped signal is determined. Based on the at least one chopper signal and the power of the at least one chopper signal, a target power signal is determined, wherein the power of the target power signal is equal to the operating power; The target power signal is connected to the heating load to heat the heating load.

2. The method according to claim 1, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: Iterate through the power of the at least one chopped signal; If a first target chopping signal exists among the at least one chopping signal, the first target chopping signal is determined as a target power signal, and the power of the first target chopping signal is equal to the operating power.

3. The method according to claim 2, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: If the first target chopping signal is not present in the at least one chopping signal, a set of power regulation ratios that meet the preset conditions is determined from the AC power signal, and the set of power regulation ratios is not empty; Randomly select at least one target power ratio from the set of power ratios, and randomly select at least one second target chopping signal from the at least one chopping signal; Based on the at least one target power ratio, the at least one second target chopping signal is subjected to drop-out processing to obtain at least one first drop-out signal; Determine the power of the at least one first dropped signal; If a first target signal is present among the at least one first signal loss, the first target signal loss is determined as a target power signal, and the power of the first target signal loss is equal to the operating power.

4. The method according to claim 3, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: If the first target lost signal is not present in the at least one first lost signal, the weights corresponding to the at least one first lost signal are obtained, and the weights are positive integers; Based on the power of at least one first lost signal and the weight corresponding to each of the at least one first lost signal, at least one first candidate lost signal power is determined; If there is a target loss power equal to the operating power among the at least one first candidate loss power, then at least one first loss signal corresponding to the target loss power is determined as the target power signal.

5. The method according to claim 4, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: If there is no target power equal to the operating power among the at least one first candidate power loss, at least one target power ratio is randomly selected again from the power ratio set to obtain an updated at least one target power ratio; Based on the updated target power ratio, the at least one second target chopping signal is subjected to drop-out processing to obtain at least one second drop-out signal. When there is a target lost signal determined based on the at least one second lost signal, the at least one second lost signal corresponding to the power of the target lost signal is determined as the target power signal, and the power of the target lost signal is equal to the operating power.

6. The method according to claim 5, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: If the target lost signal is not present in the at least one second lost signal, the weights corresponding to the at least one second lost signal are obtained, and the weights corresponding to the at least one second lost signal are positive integers. Based on the power of at least one second lost signal and the weight corresponding to each of the at least one second lost signal, at least one second candidate lost signal power is determined; If there is a target loss power equal to the operating power among the at least one second candidate loss power, the at least one second loss signal corresponding to the target loss power is determined as the target power signal.

7. The method according to claim 6, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: If there is no target loss power equal to the working power among the at least one second candidate loss power, at least one second target chopping signal is randomly selected again from the at least one chopping signal to obtain an updated at least one second target chopping signal; Based on at least one target power ratio randomly selected from the set of power ratios, the updated at least one second target chopping signal is subjected to drop-out processing to obtain at least one drop-out signal. When there is a target lost signal determined based on the at least one lost signal, the at least one lost signal corresponding to the target lost signal is determined as the target power signal, and the power of the target lost signal is equal to the operating power.

8. The method according to claim 7, characterized in that, Determining the target power signal based on the at least one chopper signal and the power of the at least one chopper signal includes: If the target lost signal is not present in the at least one lost signal, the weights corresponding to each of the at least one lost signal are obtained, and the weights corresponding to each of the at least one lost signal are positive integers; Based on the power of at least one dropped signal and the weight corresponding to each of the at least one dropped signal, at least one candidate dropped power is determined; If there is a target loss power equal to the operating power among the at least one candidate loss power, then at least one loss signal corresponding to the target loss power is determined as the target power signal.

9. A control device applied to a heating load, characterized in that, include: The acquisition module is used to acquire the operating power of the heating load and the AC power signal of the heating load to be connected, and to acquire at least one chopping time that meets the preset conditions from the AC power signal. The AC power signal is the mains power signal transmitted to the heating load via the power grid; The preset conditions include: passing an electromagnetic compatibility test to ensure that the AC power signal corresponding to the at least one chopping time meets the requirements of low harmonic current and anti-voltage flicker. A signal processing module is configured to perform chopping processing on the AC power signal based on the at least one chopping time to obtain at least one chopped signal, and determine the power of the at least one chopped signal. A signal determination module is used to determine a target power signal based on the at least one chopper signal and the power of the at least one chopper signal, wherein the power of the target power signal is equal to the operating power; The signal access module is used to connect the target power signal to the heating load in order to heat the heating load.

10. A control device applied to a heating load, characterized in that, include: Memory, used to store executable control instructions; A processor, when executing executable control instructions stored in the memory, implements the method according to any one of claims 1 to 8.

11. A computer-readable storage medium applied to a heating load, characterized in that, The system stores executable control instructions for causing the processor to execute, thereby implementing the method as described in any one of claims 1 to 8.

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