WO2020237810A1

WO2020237810A1 - Driving control method and apparatus, household appliance, and computer readable storage medium

Info

Publication number: WO2020237810A1
Application number: PCT/CN2019/097557
Authority: WO
Inventors: 文先仕; 黄招彬; 曾贤杰; 张杰楠
Original assignee: 广东美的制冷设备有限公司; 美的集团股份有限公司
Priority date: 2019-05-31
Filing date: 2019-07-24
Publication date: 2020-12-03

Abstract

The present application provides a driving control method and apparatus, a household appliance, and a computer readable storage medium. The driving control method comprises: detecting a bus voltage, an alternating voltage, and an alternating current corresponding to the alternating voltage for a power supply signal during a power supply process for a load; determining that a switching device currently operates in a first mode or a second mode; according to the bus voltage, the alternating current, the alternating voltage, and the current operation mode of the switching device, controlling to switch the operation mode of the switching device, wherein the first mode is configured to be a mode controlling the switching device to be turned off, and the second mode is configured to be a mode in which the switching device operates according to a specified pulse driving signal, so that an input current in the second mode is inputted in a following manner into an operating voltage of the load, and the alternating voltage is converted into the bus voltage after rectifying processing. The technical solution of the present application improves the operating efficiency of driving the load operation and reduces the power consumption of a circuit and hardware loss.

Description

Drive control method, device, household appliance and computer readable storage medium

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910473273.0, and the application name is "drive control methods, devices, household appliances, and computer-readable storage media" on May 31, 2019, and its entire contents Incorporated in this application by reference.

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910473275.X, and the application name is "drive control methods, devices, household appliances, and computer-readable storage media" on May 31, 2019. The entire content is incorporated into this application by reference.

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on May 31, 2019, the application number is 201910473289.1, and the application title is "Drive control methods, devices, household appliances, and computer-readable storage media", and its entire contents Incorporated in this application by reference.

Technical field

This application relates to the field of drive control, and in particular, to a drive control method, a drive control device, a household appliance and a computer-readable storage medium.

Background technique

PFC (Power Factor Correction, power factor correction) technology is widely used in drive control circuits, and its main function is to improve the power efficiency of electrical equipment (load).

In related technologies, PWM (Pulse-Width Modulation, pulse width modulation signal) is usually used to drive the switch tube to turn on or off. Commonly used PFC modules include Boost PFC modules and bridgeless totem pole PFC modules, two types of PFC The module has at least the following technical defects when driving the load:

(1) The circuit structure of the Boost PFC module is simple, that is, the charging and discharging process of the inductor is controlled by the switch tube. However, the efficiency of the Boost PFC module is low and the switching loss is large.

(2) The efficiency of the bridgeless totem pole PFC module is higher than the efficiency of the Boost PFC module. However, the bridgeless totem pole PFC module usually works in high frequency or power frequency mode, which not only causes the drive control circuit High hardware loss and high power consumption are also not conducive to further improving the energy efficiency of the load.

In addition, any discussion of the background technology in the entire specification does not mean that the background technology must be the prior art known to those skilled in the art. Any discussion of the prior art in the entire specification does not mean that the prior art must be considered Is widely known or must constitute common knowledge in the field.

Application content

This application aims to solve at least one of the technical problems existing in the prior art or related technologies.

For this reason, one purpose of this application is to propose a drive control method.

Another purpose of this application is to provide a drive control device.

Another purpose of this application is to propose a household appliance.

Another purpose of this application is to provide a computer-readable storage medium.

In the technical solution of the first aspect of the present application, a drive control method is proposed, including: detecting the bus voltage, the AC voltage, and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal; and determining The switching device is currently working in the first mode or the second mode; according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, the operation of the switching device is controlled Mode switching, wherein the first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the second The input current in the mode follows the operating voltage input to the load, and the AC voltage is converted into the bus voltage after being rectified.

In this technical solution, according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, the switching of the working mode of the switching device is controlled, that is, the switching device is adjusted Work in the first mode or in the second mode, determine the rate of change of the bus voltage over time according to the bus voltage, the AC current, and the AC voltage, and then refer to the magnitude relationship between the bus voltage and the bus voltage threshold, The working mode of the switching device is determined, and the switching moment is determined in combination with the trend of the alternating voltage change with time, wherein the first mode is configured to control the mode of turning off the switching device, and in the first mode, stop sending to the switching device Drive signals to reduce the power consumption and hardware loss of the switching device. As the bus voltage continues to drop, it is also necessary to run the second mode to boost the load and correct the power factor of the load. Accordingly, the first The second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input current in the second mode follows the bus voltage.

Among them, the pulse drive signal includes pulse width, duty cycle, switching frequency, etc., but is not limited thereto.

Further, those skilled in the art can understand that the normal operation of the load can be ensured in both the first mode and the second mode, that is, a switching point between the first mode and the second mode corresponds to the maximum threshold of the bus voltage, The other switching point between the first mode and the second mode corresponds to the minimum threshold of the bus voltage. Both the duration of the first mode and the duration of the second mode depend on the rate of change of the bus voltage to ensure normal load operation. Next, try to increase the duration of the first mode, so as to effectively reduce the working time, turn-on times, hardware loss and failure rate of the switching device.

Optionally, the AC signal in the power supply signal is a continuous signal, and the AC signal includes a positive half cycle signal and a negative half cycle signal alternately distributed, and the switching time between the first mode and the second mode is The zero-crossing time of the AC signal in the power supply signal, where the zero-crossing time is a transition time between the adjacent positive half-cycle signal and the negative half-cycle signal.

Optionally, while outputting a pulse drive signal to the switching device in the second mode, a given current also needs to be applied. In order to reduce the impact of the given current on the circuit hardware, the start time and end time of the second mode are both set The zero-crossing moment, that is, the working period of the second mode includes an integer number of half cycles.

Optionally, the switching between the first mode and the second mode is performed at the moment of the zero-crossing point of the AC voltage, so as to reduce the current harmonics in the drive control circuit, which is beneficial to reduce the harmonic signal, and further improves the performance of the drive control circuit. Reliability and service life.

In the technical solution of the second aspect of the present application, a drive control method is proposed, including: detecting the bus voltage, the AC voltage, and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal; and determining The switching device currently operates in the first mode or the second mode; according to the bus voltage, the alternating current, the alternating voltage and the current operating mode of the switching device, the operation of the switching device is controlled Mode switching; controlling the switching device to switch to the second mode of operation, and determining the duty cycle of the switching device according to the voltage difference between the bus voltage and the bus voltage required for the load operation, wherein, The first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input current in the second mode follows AC voltage input to the load.

In this technical solution, the switching device is controlled to work in the first mode or the second mode according to the power supply signal detected in real time, the power supply signal in the next cycle, and the power supply signal threshold. The power supply signal includes The AC voltage before rectification and the bus voltage after rectification, the real-time detected power supply signal predicts the power supply signal in the next cycle, and refers to the magnitude relationship between the bus voltage and the bus voltage threshold, determines the operating mode of the switching device, and combines the AC The trend of voltage changes over time determines the switching moment, wherein the first mode is configured to control the switching off of the switching device, and in the first mode, the driving signal to the switching device is stopped to reduce the power consumption of the switching device And hardware loss. As the bus voltage continues to drop, it is also necessary to run the second mode to boost the load and correct the power factor of the load. Correspondingly, the second mode is configured as the switching device according to Specify the switching frequency operation mode so that the input current in the second mode follows the bus voltage.

In addition, by controlling the switching device to switch to the second mode of operation, and determining the duty cycle of the switching device according to the voltage difference between the bus voltage and the bus voltage required for the load operation, that is, Determining the boost rate of the bus voltage and determining the minimum value of the given current in the second mode can not only prevent the load from stalling, but also ensure the reliability of the boost process of the bus voltage.

Further, those skilled in the art can understand that the normal operation of the load can be ensured in both the first mode and the second mode, that is, a switching point between the first mode and the second mode corresponds to the maximum threshold of the bus voltage, The other switching point between the first mode and the second mode corresponds to the minimum threshold of the bus voltage. Both the duration of the first mode and the duration of the second mode depend on the rate of change of the bus voltage to ensure that the load is running normally. Next, try to increase the duration of the first mode, thereby effectively reducing the operating time, turn-on times, hardware loss and failure rate of the switching device.

Optionally, the AC signal in the power supply signal is a continuous signal, and the AC signal includes a positive half cycle signal and a negative half cycle signal alternately distributed, and the switching time between the first mode and the second mode is The zero-crossing point time of the AC signal in the power supply signal, and the zero-crossing point time is a transition time between the adjacent positive half-cycle signal and the negative half-cycle signal.

Optionally, the switching between the first mode and the second mode is performed at the moment of the zero-crossing point of the AC voltage, so as to reduce the current harmonics in the drive control circuit, which is beneficial to reduce the harmonic signal and further improve the performance of the drive control circuit. Reliability and service life.

In the technical solution of the third aspect of the present application, a drive control method is proposed, including: detecting the bus voltage, the AC voltage, and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal; and determining The switching device is currently working in the first mode or the second mode; according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, the operation of the switching device is controlled Mode switching; control the switching device to switch to the second mode to work, and determine the given current in the second mode according to the operating parameters of the load, wherein the first mode is configured to control the A mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input current in the second mode follows the AC voltage input to the load, the The AC voltage is converted into the bus voltage after being rectified.

In this technical solution, the switching device is controlled to work in the first mode or the second mode according to the power supply signal detected in real time, the power supply signal in the next cycle, and the power supply signal threshold. The power supply signal includes The AC voltage before rectification and the bus voltage after rectification, the real-time detected power supply signal predicts the power supply signal in the next cycle, and refers to the magnitude relationship between the bus voltage and the bus voltage threshold, determines the operating mode of the switching device, and combines the AC The trend of voltage changes over time determines the switching moment, wherein the first mode is configured to control the switching off of the switching device, and in the first mode, the driving signal to the switching device is stopped to reduce the power consumption of the switching device And hardware loss. As the bus voltage continues to drop, it is also necessary to run the second mode to boost the load and correct the power factor of the load. Correspondingly, the second mode is configured as the switching device according to Specify the operating mode of the pulse drive signal so that the input current in the second mode follows the bus voltage.

In addition, by controlling the switching device to switch to the second mode of operation, and determining the second mode according to the voltage difference between the bus voltage and the bus voltage required for the load operation, the second The given current in the mode can not only prevent the load from stalling, but also ensure the reliability of the boost process of the bus voltage.

In addition, the drive control method according to the foregoing embodiment of the present application may also have the following additional technical features:

In any of the above technical solutions, optionally, the operating parameters of the load are detected at preset time intervals, and the operating parameters include at least one of current, power, rotation speed, inverter modulation frequency, and load pressure , Wherein the inverter is configured to be arranged in a bus line between the switching device and the load, and the inverter is configured to control the operation process of the load.

In any of the above technical solutions, optionally, according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, the switching of the working mode of the switching device is controlled, specifically The method includes: determining that the switching device is currently operating in the first mode or operating in the second mode; determining that the switching device is currently operating in the second mode, and comparing the bus voltage with a first bus voltage threshold. Determining that the bus voltage is greater than the first bus voltage threshold, and controlling the switching device to switch to the first mode of operation within a first preset time period after comparing the bus voltage.

In this technical solution, by determining that the real-time detected bus voltage is greater than the first bus voltage threshold, and the first bus voltage threshold is less than or equal to the maximum bus voltage threshold, in order to avoid the capacitive element or switching device from being broken down, Controlling the switching device to switch to the first mode to work at a specified time, while reducing the power consumption of the switching device, further improves the reliability of the drive control circuit.

In any of the above technical solutions, optionally, according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, the switching of the working mode of the switching device is controlled, specifically It also includes: determining that the switching device is currently operating in the first mode or operating in the second mode; determining that the switching device is currently operating in the second mode, and comparing the bus voltage with a second bus voltage threshold Determine that the bus voltage is less than the second bus voltage threshold, calculate the rate of change of the bus voltage; compare the relationship between the rate of change of the bus voltage and the first rate of change threshold; determine the The rate of change of the bus voltage is less than the first rate of change threshold, and the switching device is controlled to switch to the first mode of operation at the moment of the zero-crossing point of the AC voltage.

In this technical solution, by determining that the real-time detected bus voltage is less than the second bus voltage threshold, and the second bus voltage threshold is less than or equal to the maximum bus voltage threshold, in order to avoid the capacitive element or switching device from being broken down, It is determined that the rate of change of the bus voltage is less than the first rate of change threshold, and the switching device is controlled to switch to the first mode of operation at the moment of the zero-crossing point of the AC voltage, while reducing the power consumption of the switching device, The reliability of the drive control circuit is further improved.

In any of the above technical solutions, optionally, according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, the switching of the working mode of the switching device is controlled, specifically It also includes: determining that the switching device is currently operating in the first mode or operating in the second mode; determining that the switching device is currently operating in the second mode, and comparing the bus voltage with a second bus voltage threshold Determine that the bus voltage is less than the second bus voltage threshold, calculate the rate of change of the bus voltage; compare the relationship between the rate of change of the bus voltage and the first rate of change threshold; determine the The rate of change of the bus voltage is greater than or equal to the first rate of change threshold, and the switching device is controlled to switch to the first mode of operation within a second preset period after the rate of change of the bus voltage is compared.

In this technical solution, by determining that the real-time detected bus voltage is less than the second bus voltage threshold, and the second bus voltage threshold is less than or equal to the maximum bus voltage threshold, it is determined that the rate of change of the bus voltage is greater than or equal to all The first rate of change threshold, in order to prevent the capacitive element or the switching device from being broken down, the switching device is controlled to switch to the first mode of operation within a second preset period after comparing the rate of change of the bus voltage , While reducing the power consumption of the switching device, the reliability of the drive control circuit is further improved.

In any of the above technical solutions, optionally, controlling the switching device to work in the first mode or the second mode according to the AC input current and the time length, and specifically further includes: determining that the switching device is currently operating in Working in the first mode or working in the second mode; determining that the switching device is currently working in the first mode, calculating the rate of change of the bus voltage; comparing the rate of change of the bus voltage with the second change The magnitude relationship between the rate thresholds; determining that the rate of change of the bus voltage is greater than or equal to the second rate of change threshold, and controlling the switching device to switch to the second mode of operation at the moment of the zero crossing of the AC voltage.

In this technical solution, it is determined that the switching device is currently operating in the first mode, and the bus voltage begins to drop, and then the rate of change of the bus voltage is calculated, and it is determined that the rate of change of the bus voltage is greater than or equal to the The second rate of change threshold indicates that the bus voltage drops quickly. Therefore, in order to avoid the voltage drop causing the load to stop, the switching device is controlled to switch to the second mode to work, which further improves the reliability and energy efficiency of the drive control circuit .

In any of the above technical solutions, optionally, controlling the switching device to work in the first mode or the second mode according to the AC input current and the time length, and specifically further includes: determining that the switching device is currently operating in Working in the first mode or working in the second mode; determining that the switching device is currently working in the first mode, calculating the rate of change of the bus voltage; comparing the rate of change of the bus voltage with the second change The relationship between the magnitude of the ratio threshold; determining that the rate of change of the bus voltage is less than the second rate of change threshold, and controlling the switching device to switch to the second within a third preset period after comparing the bus voltage Mode work.

In this technical solution, it is determined that the switching device is currently operating in the first mode and the bus voltage begins to drop, and then the rate of change of the bus voltage is calculated, and it is determined that the rate of change of the bus voltage is less than the second The rate of change threshold indicates that the bus voltage drops slowly. Therefore, in order to prevent the load from stalling due to the voltage drop, the switching device is controlled to switch to the second mode of operation within the third preset period after comparing the bus voltage , Further improve the reliability and energy efficiency of the drive control circuit.

In any of the above technical solutions, optionally, the method further includes: controlling the switching device to switch to the second mode of operation, and detecting the bus voltage in real time; and controlling the switch as the bus voltage increases The duty cycle of the device is reduced.

In this technical solution, the switching device is controlled to switch to the second mode of operation, and as the bus voltage increases, the duty cycle of the switching device is controlled to decrease to avoid the rise rate of the bus voltage If it is too large, the capacitive element or the switching device is broken down, which further improves the reliability and operating energy efficiency of the drive control circuit.

In any of the above technical solutions, optionally, the switching device is controlled to switch to the second mode of operation, and the switch is determined according to the voltage difference between the bus voltage and the bus voltage required for the load operation The duty cycle of the device specifically includes: controlling the switching device to switch to the second mode of operation, calculating the voltage difference between the bus voltage and the bus voltage required for the load operation in real time; determining according to the voltage difference The rate of change of the bus voltage; the duty cycle of the switching device is adjusted according to the rate of change of the bus voltage, wherein the voltage difference and the duty cycle are positively correlated, and the duty cycle is The ratio between the turn-on time and the cut-off time of the switching device.

In this technical solution, the duty cycle of the switching device is adjusted by the rate of change of the bus voltage, wherein there is a positive correlation between the voltage difference and the duty cycle, and the duty cycle is the The ratio between the turn-on time of the switching device and the cut-off time, that is, the greater the voltage difference, the greater the duty cycle, that is, the greater the bus voltage rise rate. Similarly, the smaller the voltage difference, the smaller the duty cycle. That is, the lower the bus voltage rise rate.

In any of the above technical solutions, optionally, controlling the switching device to switch to work in the second mode, and determining the given current in the second mode according to the operating parameters of the load, specifically includes: controlling the substation The switching device is switched to the second mode to work, and the voltage difference between the bus voltage and the bus electricity required for the load operation is calculated in real time; the change rate of the bus voltage is determined according to the voltage difference; The rate of change of the bus voltage adjusts the given current, wherein there is a positive correlation between the voltage difference and the given current.

In this technical solution, the given current is adjusted by the rate of change of the bus voltage, wherein there is a positive correlation between the voltage difference and the given current, and the duty cycle is the ratio of the switching device The ratio between the turn-on time and the cut-off time, that is, the greater the voltage difference, the greater the given current, that is, the greater the bus voltage rise rate. Similarly, the smaller the voltage difference, the smaller the given current, that is, the bus voltage The lower the ascent rate.

In the technical solution of the fourth aspect of the present application, a drive control device is proposed. The drive control device includes a processor, which is implemented when the processor executes a computer program: the drive control method according to any one of the above Therefore, the drive control device has the beneficial technical effects of any of the above-mentioned drive control methods, which will not be repeated here.

In the technical solution of the fifth aspect of the present application, a household electrical appliance is proposed, including: a load; the drive control device as described in the technical solution of the fourth aspect of the present application; and a drive control circuit, the drive control circuit receiving Controlled by the drive control device, the drive control circuit is provided with a PFC, the PFC has at least one switching device, and the switching device is configured to control a power supply signal to supply power to the load.

In this technical solution, the home appliance includes the drive control device as described in the above technical solution. Therefore, the home appliance includes all the beneficial effects of the drive control device as described in the above technical solution, which will not be repeated again.

In the above technical solution, optionally, the household electrical appliance includes at least one of an air conditioner, a refrigerator, a fan, a range hood, a vacuum cleaner, and a host computer.

In the technical solution of the sixth aspect of the present application, a computer-readable storage medium is proposed, on which a computer program is stored, and when the computer program is executed, the drive control as described in any of the above technical solutions is realized Method steps.

The additional aspects and advantages of the present application will become obvious in the following description, or be understood through the practice of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 shows a schematic flowchart of a driving control method according to an embodiment of the present application;

Fig. 2 shows a schematic flow chart of a drive control method according to another embodiment of the present application;

Fig. 3 shows a schematic flow chart of a driving control method according to another embodiment of the present application;

Fig. 4 shows a schematic diagram of driving control current according to an embodiment of the present application;

Fig. 5 shows a schematic diagram of a driving control current according to an embodiment of the present application;

Fig. 6 shows a schematic diagram of a drive control scheme according to an embodiment of the present application;

FIG. 7 shows a timing diagram of a driving control method according to an embodiment of the present application;

FIG. 8 shows a timing diagram of a driving control method according to another embodiment of the present application;

Fig. 9 shows a timing diagram of a driving control method according to another embodiment of the present application.

Detailed ways

In order to be able to understand the above objectives, features and advantages of the application more clearly, the application will be further described in detail below in conjunction with the accompanying drawings and specific implementations. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not subject to the specific details disclosed below. Limitations of the embodiment.

As shown in FIG. 1, the driving control method according to an embodiment of the present application includes: step S102, detecting the bus voltage, the AC voltage, and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal; Step S104, determining that the switching device is currently working in the first mode or working in the second mode; Step S106, controlling according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device Switching the operating mode of the switching device, wherein the first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal , So that the input current in the second mode follows the operating voltage input to the load, and the AC voltage is converted into the bus voltage after being rectified.

As shown in FIG. 2, the driving control method according to an embodiment of the present application includes: step S202, detecting the bus voltage, the AC voltage, and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal; Step S204, determining that the switching device is currently working in the first mode or working in the second mode; Step S206, controlling according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device Switch the operating mode of the switching device; step S208, control the switching device to switch to the second mode of operation, and determine the voltage difference between the bus voltage and the bus voltage required for the load operation. The duty cycle of the switching device, wherein the first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that The input current in the second mode follows the AC voltage input to the load.

As shown in FIG. 3, the driving control method according to an embodiment of the present application includes: step S302, detecting the bus voltage, the AC voltage, and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal; Step S304, determining that the switching device is currently working in the first mode or working in the second mode; Step S306, controlling according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device Switching the working mode of the switching device; step S308, controlling the switching device to switch to the second mode of operation, and determining the given current in the second mode according to the operating parameters of the load, where The first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input current in the second mode follows the input The AC voltage to the load is converted into the bus voltage after being rectified.

In this technical solution, the switching device is controlled to work in the first mode or the second mode according to the power supply signal detected in real time, the power supply signal in the next cycle, and the power supply signal threshold. The power supply signal includes The AC voltage before rectification and the bus voltage after rectification, the real-time detected power supply signal predicts the power supply signal in the next cycle, and refers to the magnitude relationship between the bus voltage and the bus voltage threshold to determine the operating mode of the switching device, and combines the AC The trend of voltage changes with time determines the switching moment, wherein the first mode is configured to control the switching off of the switching device, and in the first mode, the driving signal to the switching device is stopped to reduce the power consumption of the switching device And hardware loss, and as the bus voltage continues to drop, it is also necessary to run the second mode to boost the load and correct the power factor of the load. Correspondingly, the second mode is configured as the switching device according to Specify the operating mode of the pulse drive signal so that the input current in the second mode follows the bus voltage.

In addition, by controlling the switching device to switch to the second mode of operation, and according to the voltage difference between the bus voltage and the bus voltage required for operation of the load, the second operation is determined according to the operating parameters of the load. The given current in the mode can not only prevent the load from stalling, but also ensure the reliability of the boost process of the bus voltage.

In this technical solution, by determining that the real-time detected bus voltage is greater than the first bus voltage threshold, and the first bus voltage threshold is less than or equal to the maximum bus voltage threshold, in order to avoid the capacitive element or switching device from being broken down, Controlling the switching device to switch to the first mode of operation at a specified time, while reducing the power consumption of the switching device, further improves the reliability of the drive control circuit.

In this technical solution, by determining that the real-time detected bus voltage is less than the second bus voltage threshold, and the second bus voltage threshold is less than or equal to the maximum bus voltage threshold, in order to avoid the capacitive element or switching device from being broken down, It is determined that the rate of change of the bus voltage is less than the first rate of change threshold, and the switching device is controlled to switch to the first mode of operation at the moment of the zero-crossing point of the AC voltage, while reducing the power consumption of the switching device, Further improve the reliability of the drive control circuit.

In this technical solution, it is determined that the switching device is currently operating in the first mode, and the bus voltage begins to drop, and then the rate of change of the bus voltage is calculated, and when it is determined that the rate of change of the bus voltage is greater than or equal to the The second rate of change threshold indicates that the bus voltage drops quickly. Therefore, in order to avoid the voltage drop causing the load to stop, the switching device is controlled to switch to the second mode to work, which further improves the reliability and energy efficiency of the drive control circuit .

In this technical solution, it is determined that the switching device is currently operating in the first mode, and the bus voltage begins to drop, and then the rate of change of the bus voltage is calculated, and it is determined that the rate of change of the bus voltage is less than the second The rate of change threshold indicates that the bus voltage drops slowly. Therefore, in order to avoid the voltage drop causing the load to stop, the switching device is controlled to switch to the second mode of operation within the third preset time period after comparing the bus voltage , Further improve the reliability and energy efficiency of the drive control circuit.

In any of the above technical solutions, optionally, it further includes: controlling the switching device to switch to the second mode to work, and detecting the bus voltage in real time; and controlling the switch as the bus voltage increases The duty cycle of the device is reduced.

In this technical solution, the switching device is controlled to switch to the second mode of operation, and as the bus voltage increases, the duty cycle of the switching device is controlled to decrease to avoid the rise rate of the bus voltage If it is too large, the capacitive element or switching device is broken down, which further improves the reliability and operating energy efficiency of the drive control circuit.

In any of the above technical solutions, optionally, controlling the switching device to switch to work in the second mode, and determining the given current in the second mode according to the operating parameters of the load, specifically includes: controlling the substation The switching device is switched to the second mode to work, and the voltage difference between the bus voltage and the bus electricity required for the load operation is calculated in real time; the rate of change of the bus voltage is determined according to the voltage difference; The rate of change of the bus voltage adjusts the given current, wherein there is a positive correlation between the voltage difference and the given current.

In this technical solution, the given current is adjusted by the rate of change of the bus voltage, wherein there is a positive correlation between the voltage difference and the given current, and the duty cycle is the value of the switching device The ratio between the turn-on time and the cut-off time, that is, the greater the voltage difference, the greater the given current, that is, the greater the bus voltage rise rate. Similarly, the smaller the voltage difference, the smaller the given current, that is, the bus voltage The lower the ascent rate.

As shown in FIG. 4, according to the drive control circuit of an embodiment of the present application, the drive control circuit is connected between the AC of the power grid system and the input end of the load, and specifically includes: a bridge rectifier module and a boost type power factor correction module , Capacitive component C (with filtering characteristics) and inverter. Among them, the bridge rectifier module is used to convert AC signals into pulsating DC signals. The Boost type power factor correction module includes inductive components L, switching tubes Q and one-way Due to the charging and discharging effects of capacitive element C, the voltage on capacitive element C presents a sawtooth ripple. Combined with the conduction characteristics of unidirectional conduction device D, only when the instantaneous value of the AC line voltage is higher than the capacitance The unidirectional conduction device D will be turned on due to the forward bias when the voltage on the neutral element is applied. That is, in each cycle of the AC line input signal, the unidirectional conduction device D will be turned on only near the peak value. The input AC voltage presents a sine wave waveform, but the input AC current has a large number of spikes, that is, the harmonic components that cause the circuit's low power factor.

Therefore, the Boost type power factor correction module can not only solve the problem of the phase difference between the AC voltage and the AC current, but also solve the electromagnetic interference and electromagnetic compatibility problems caused by harmonic signals.

Further, for the purpose of further improving the energy efficiency of load operation, for the above-mentioned active Boost power factor correction module, the operating mode of the switch tube is adjusted in combination with the operating parameters of the load, especially when it is detected that the driving load is required to operate. When the power is low, whether the switch tube is working is controlled according to the power supply signal, where the power supply signal includes the AC voltage and bus voltage of the AC input of the grid system.

Furthermore, it is determined that the switch tube is working in the second mode, and the relationship between the bus voltage and the maximum threshold V _{dc_max} of the bus voltage, and the relationship between the bus voltage and the minimum threshold V _{dc_min of the} bus voltage are further combined to Control the output pulse drive signal to the switch tube or stop outputting the pulse drive signal to the switch tube.

Specifically, if the bus voltage exceeds the upper limit voltage threshold, stop outputting pulse drive signals to the switch tube, that is, switch to the first mode of operation, that is, the switch tube is in an intermittent state, and the bus voltage is lower than the minimum threshold V _{dc_min of the} bus voltage, and output to the switch tube Pulse drive signal, namely switch to the second mode of work, that is, the switch tube is in working state, so that the given current I _{S is} close to the sine wave waveform.

Still further, the switching time between the first mode and the second mode is the zero-crossing point of the AC signal to further reduce the spike signal in the drive control circuit.

As shown in FIG. 5, according to the drive control circuit of another embodiment of the present application, the drive control circuit is connected between the power grid system AC and the input end of the load, and specifically includes: bridgeless totem pole PFC module, capacitive Component C (with filtering characteristics) and inverter. Among them, the bridgeless totem pole PFC module includes an inductive component L, a switch tube and a unidirectional conduction component D. Due to the charging and discharging effects of the capacitive component C, the capacitive component The voltage on C presents a sawtooth ripple, combined with the conduction characteristics of the unidirectional conduction device D, only when the AC line voltage instantaneous value is higher than the voltage on the capacitive element, the unidirectional conduction device D will be forward biased Set to conduction, that is, in each cycle of the AC line input signal, only the unidirectional conduction device D will be turned on near the peak value. The input AC voltage presents a sine wave waveform, but the input AC current has a large number of spikes Pulse, that is, the harmonic component that causes the circuit's power factor to drop.

Therefore, the bridgeless totem pole PFC module can not only solve the problem of phase difference between AC voltage and AC current, but also solve the electromagnetic interference and electromagnetic compatibility problems caused by harmonic signals. In this embodiment, the switch tube includes The first switching tube Q ₁ , the second switching tube Q ₂ , the third switching tube Q ₃ and the fourth switching tube Q ₄ , where the first switching tube Q ₁ and the second switching tube Q ₂ are high-frequency switching tubes, The third switching tube Q ₃ and the fourth switching tube Q ₄ are low-frequency switching tubes.

Further, for the purpose of further improving the energy efficiency of load operation, for the above-mentioned active bridgeless totem pole PFC module, the operating mode of the switch tube is adjusted in combination with the operating parameters of the load, especially when the driving load is detected When the power demand is low, whether the switch tube is working is controlled according to the power supply signal, where the power supply signal includes the AC voltage and bus voltage of the AC input of the grid system.

Specifically, if the bus voltage exceeds the upper limit voltage threshold, stop outputting the pulse drive signal to the switch tube, that is, switch to the first mode of operation, that is, the switch tube is in an intermittent state, and the bus voltage is lower than the minimum threshold V _{dc_min of the} bus voltage, and output to the switch tube The pulse drive signal is switched to the second mode of operation, that is, the switch tube is in the working state, so that the given current I _{S is} close to the sine wave waveform.

Still further, the switching moment between the first mode and the second mode is the zero-crossing point of the AC signal, so as to further reduce the spike signal in the drive control circuit.

As shown in Figure 6, in the drive control scheme of this embodiment, the steps executed by the PI controller include:

(1) The first PI controller determines the rate of change _according to the difference between the bus voltage V _dc and the bus voltage threshold V _dcref , thereby determining the gain value I _{ref_dc of} a given current, and the gain value and the AC voltage V _ac (in Figure 6 The product of the shown absolute value of the AC voltage) is the given current, which is output to the second PI controller after current limiting processing is performed on the given current.

(2) The second PI controller calculates and determines the pulse drive signal according to the given current and the alternating current I _ac , where the pulse drive signal includes the first duty cycle, the second duty cycle, the third duty cycle and the fourth duty cycle. For the empty ratio, for the same reason, a dead time is set between the conduction time of the first switching tube and the conduction time between the second switching tube. In addition, the pulse driving signal also includes the switching frequency of the switching tube.

Among them, the first PI controller and the second PI controller are both proportional integral controllers.

As shown in Figure 7 and Figure 8, for the purpose of further improving the energy efficiency of load operation, for the above-mentioned active bridgeless totem pole PFC module, the operating mode of the switch tube is adjusted in combination with the operating parameters of the load, especially in When it is detected that the power required to drive the load is low, it controls whether the switch tube works according to the power supply signal, where the power supply signal includes the AC voltage and bus voltage of the AC input of the grid system.

Furthermore, it is determined that the switch tube works in the second mode, and further combines the magnitude relationship between the bus voltage V _dc and the maximum threshold value of the bus voltage V _{dc_max} , and the relationship between the bus voltage V _dc and the minimum threshold value of the bus voltage V _{dc_min} The size relationship is used to control the output of pulse drive signal to the switch tube or stop the output of pulse drive signal to the switch tube.

Specifically, if the bus voltage V _dc exceeds the upper limit voltage threshold, stop outputting pulse drive signals to the switch tube, that is, switch to the first mode of operation, that is, the switch tube is in an intermittent state, and the bus voltage is lower than the minimum bus voltage threshold V _{dc_min} , and the switch The tube outputs a pulse drive signal, that is, it switches to the second mode of operation, that is, the switch tube is in working state, so that the given current I _{S is} close to the sine wave waveform.

As shown in FIG timing of switching between the first mode and the second mode is 7 U _S AC signal zero crossings of the time, to further reduce the harmonic drive control signal circuit, a given current I _S is close to a sine Wave waveform.

As shown, between the first mode and the second mode switching timing signal AC is not a zero crossing time U _S 8, which may lead to a harmonic drive signal control circuit is too large, which also caused a given distortion large current I _S.

As shown in Figure 9, it is determined according to the sampling value of the bus voltage to switch from the first mode to the second mode at the time T ₁₂ corresponding to a full-wave zero-crossing point. According to the law of the change of the bus voltage V _dc with time, the bus voltage Perform prediction and sampling. Optionally, after entering the second mode, predict the first bus voltage predicted value V _{dc_pre1} corresponding to the first half-wave zero crossing point, and compare the first bus voltage predicted value V _{dc_pre1} with the maximum bus voltage threshold V The relationship between the magnitude of _{dc_max} , determine that the first bus voltage predicted value V _{dc_pre1 is} less than the maximum bus voltage threshold V _{dc_max} , continue to maintain the second mode of operation, and predict the first bus voltage based on the next full-wave zero-crossing bus voltage sampling value V _{dc_cur} Predicted value V _{dc_pre2} , compare the magnitude relationship between the predicted second bus voltage V _{dc_pre2} and the maximum bus voltage threshold V _{dc_max} to determine that the predicted second bus voltage V _{dc_pre2 is} close to the maximum bus voltage threshold V _{dc_max} , that is, the maximum bus voltage threshold The difference between V _{dc_max} and the second bus voltage predicted value V _{dc_pre2} is less than the difference threshold, and it is determined to switch to the first mode at time T ₂₁ corresponding to another full-wave zero-crossing point.

A household appliance according to an embodiment of the present application includes: a load; the drive control device as described in any one of the above; a drive control circuit, the drive control circuit is controlled by the drive control device, and the drive control circuit is configured to There is a PFC, the PFC has at least one switching device, and the switching device is configured to control the power supply signal to supply power to the load.

In this technical solution, the home appliance includes the drive control device as described in any of the above embodiments. Therefore, the home appliance includes all the beneficial effects of the drive control device as described in any of the above embodiments. Go into details.

In an embodiment of the present application, optionally, the household electrical appliance includes at least one of an air conditioner, a refrigerator, a fan, a range hood, a vacuum cleaner, and a host computer.

In this embodiment, the switch tube is set to control the power supply signal to supply power to the load. As long as the bus voltage is within the normal variation range, the normal operation of the load can be guaranteed. Under the premise that the load can operate normally, the bus can be The voltage change sets the corresponding burst (intermittent oscillation) mode control strategy, that is, the intermittent output control strategy, to control the high-frequency action signal in an intermittent output state through the intermittent output control strategy, that is, the high-frequency action signal is not required to be continuously output State, that is, the switch tube does not need to be continuously in the high-frequency action switch state, which can reduce the power consumption of the power factor correction module in the drive control circuit, so as to improve the electrical equipment (such as air conditioner) using the drive control circuit Energy efficiency.

Optionally, the controller can be MCU (Micro-programmed Control Unit), CPU (Central Processing Unit, central processing unit), DSP (Digital Signal Processor), and embedded equipment. One, but not limited to this.

According to the computer-readable storage medium of the embodiment of the present application, a computer program is stored thereon, and when the computer program is executed, the steps of the drive control method as described in any of the above technical solutions are realized.

With the technical solution of the present application, by controlling the switching of the working mode of the switching device according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, that is, adjusting the switch The device works in the first mode or in the second mode, and determines the rate of change of the bus voltage with time according to the bus voltage, the AC current, and the AC voltage, and then refers to the magnitude relationship between the bus voltage and the bus voltage threshold , Determine the operating mode of the switching device, and determine the switching moment in combination with the trend of the alternating voltage over time, wherein the first mode is configured to control the switching device to turn off, and in the first mode, the switching device is stopped Send driving signals to reduce the power consumption and hardware loss of the switching devices. As the bus voltage continues to drop, it is also necessary to run the second mode to boost the load and correct the power factor of the load. Accordingly, the The second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input current in the second mode follows the bus voltage.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment can be generated It is a device that implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

It should be noted that in the claims, any reference signs located between parentheses should not be constructed as limitations on the claims. The word "comprising" does not exclude the presence of parts or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of multiple such components. The application can be implemented by means of hardware including different components and by means of a suitably programmed computer. In the unit claims listing dry devices, each of these devices may be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

The above are only preferred embodiments of the application, and are not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and originality of this application shall be included in the protection scope of this application.

Claims

A drive control method is suitable for a drive control circuit, the drive control circuit is provided with at least one switch device, and the switch device is configured to control a power supply signal to supply power to a load, wherein the drive control method includes:

Detecting the bus voltage, the AC voltage and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal;

Determining that the switching device is currently working in the first mode or working in the second mode;

According to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, controlling the switching of the working mode of the switching device,

Wherein, the first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input in the second mode The current follows the operating voltage input to the load, and the AC voltage is converted into the bus voltage after being rectified.
A drive control method is suitable for a drive control circuit, the drive control circuit is provided with at least one switch device, and the switch device is configured to control a power supply signal to supply power to a load, wherein the drive control method includes:

Detecting the bus voltage, the AC voltage and the AC current corresponding to the AC voltage during the process of supplying the load by the power supply signal;

Determining that the switching device is currently working in the first mode or working in the second mode;

Controlling the switching of the working mode of the switching device according to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device;

Controlling the switching device to switch to the second mode of operation, and determining the duty cycle of the switching device according to the voltage difference between the bus voltage and the bus voltage required for the load operation,

Wherein, the first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input in the second mode The current follows the AC voltage input to the load.
A drive control method is suitable for a drive control circuit, the drive control circuit is provided with at least one switch device, the switch device is configured to control a power supply signal to supply power to a load, wherein the drive control method includes:

Detecting the bus voltage, the AC voltage and the AC current corresponding to the AC voltage during the power supply process of the power supply signal to the load;

Determining that the switching device is currently operating in the first mode or operating in the second mode,

According to the bus voltage, the alternating current, the alternating voltage and the current working mode of the switching device, controlling the switching of the working mode of the switching device,

Controlling the switching device to switch to the second mode to work, and determining the given current in the second mode according to the operating parameters of the load,

Wherein, the first mode is configured as a mode in which the switching device is turned off, and the second mode is configured as a mode in which the switching device operates according to a specified pulse drive signal, so that the input in the second mode The current follows the AC voltage input to the load, and the AC voltage is converted into the bus voltage after being rectified.
The driving control method according to claim 3, further comprising:

Detecting the operating parameters of the load at preset time intervals, where the operating parameters include at least one of current, power, speed, inverter modulation frequency, and load pressure,

Wherein, the inverter is configured to be arranged in a bus line between the switching device and the load, and the inverter is configured to control the operation process of the load.
The drive control method according to any one of claims 1 to 4, further comprising:

Determining that the switching device is currently working in the first mode or working in the second mode;

Determine that the switching device is currently operating in the second mode, and compare the magnitude relationship between the bus voltage and the first bus voltage threshold;

It is determined that the bus voltage is greater than the first bus voltage threshold, and the switching device is controlled to switch to the first mode of operation within a first preset time period after comparing the bus voltage.
The drive control method according to any one of claims 1 to 5, further comprising:

Determining that the switching device is currently operating in the first mode or operating in the second mode;

Determine that the switching device is currently operating in the second mode, and compare the magnitude relationship between the bus voltage and the second bus voltage threshold;

Determining that the bus voltage is less than the second bus voltage threshold, and calculating the rate of change of the bus voltage;

Comparing the magnitude relationship between the rate of change of the bus voltage and the first rate of change threshold;

It is determined that the rate of change of the bus voltage is less than the first rate of change threshold, and the switching device is controlled to switch to the first mode of operation at the moment of the zero-crossing point of the AC voltage.
The drive control method according to any one of claims 1 to 6, further comprising:

Determining that the switching device is currently operating in the first mode or operating in the second mode;

Determine that the switching device is currently operating in the second mode, and compare the magnitude relationship between the bus voltage and the second bus voltage threshold;

Determining that the bus voltage is less than the second bus voltage threshold, and calculating the rate of change of the bus voltage;

Comparing the magnitude relationship between the rate of change of the bus voltage and the first rate of change threshold;

Determine that the rate of change of the bus voltage is greater than or equal to the first rate of change threshold, and control the switching device to switch to the first mode of operation within a second preset period after comparing the rate of change of the bus voltage .
The drive control method according to any one of claims 1 to 7, further comprising:

Determining that the switching device is currently operating in the first mode or operating in the second mode;

Determine that the switching device is currently operating in the first mode, and calculate the rate of change of the bus voltage;

Comparing the magnitude relationship between the rate of change of the bus voltage and the second rate of change threshold;

It is determined that the rate of change of the bus voltage is greater than or equal to the second rate of change threshold, and the switching device is controlled to switch to the second mode of operation at the moment of the zero-crossing point of the AC voltage.
The drive control method according to any one of claims 1 to 8, further comprising:

Determining that the switching device is currently working in the first mode or working in the second mode;

Determine that the switching device is currently operating in the first mode, and calculate the rate of change of the bus voltage;

Comparing the magnitude relationship between the rate of change of the bus voltage and the second rate of change threshold;

It is determined that the rate of change of the bus voltage is less than the second rate of change threshold, and the switching device is controlled to switch to the second mode of operation within a third preset time period after comparing the bus voltage.
The drive control method according to any one of claims 1 to 9, further comprising:

Detecting the current of the load, and calculating and determining the power of the load according to the current of the load;

Determining the input power of the load corresponding to a given current in the second mode;

Calculating a difference between the input power and the power of the load, the difference being configured as charging power;

Determining the rate of change of the bus voltage according to the charging power;

Determine the minimum value of the given current in the second mode according to the rate of change of the bus voltage,

Wherein, the given current is configured to control the rise of the bus voltage.
The drive control method according to any one of claims 2 to 10, wherein:

The drive control circuit also includes a capacitive element, the capacitive element is connected between the switching device and the load, the capacitive element includes a plurality of series and/or parallel electrolytic capacitors, or the Capacitive components include multiple series and/or parallel film capacitors,

The operation control method further includes:

According to the withstand voltage threshold of the capacitive element and the withstand voltage threshold of the switching device, the first bus voltage threshold is determined.
The drive control method according to any one of claims 2 to 11, further comprising:

Controlling the switching device to switch to the second mode of operation, and detecting the bus voltage in real time;

As the bus voltage increases, the duty cycle for controlling the switching device decreases.
The drive control method according to any one of claims 2 to 12, further comprising:

Controlling the switching device to switch to the second mode of operation, and calculating the voltage difference between the bus voltage and the bus voltage required for the load operation in real time;

Determining the rate of change of the bus voltage according to the voltage difference;

Adjusting the duty cycle of the switching device according to the rate of change of the bus voltage,

Wherein, there is a positive correlation between the voltage difference and the duty cycle, and the duty cycle is the ratio between the turn-on time and the cut-off time of the switching device.
The drive control method according to any one of claims 3 to 13, wherein the switching device is controlled to switch to the second mode to work, and the given second mode is determined according to the operating parameters of the load Current, including:

Controlling the switching device to switch to the second mode of operation, and calculating the voltage difference between the bus voltage and the bus voltage required for the load operation in real time;

Determining the rate of change of the bus voltage according to the voltage difference;

Adjust the given current according to the rate of change of the bus voltage,

Wherein, there is a positive correlation between the voltage difference and the given current.
A drive control device, the drive control device includes a processor, wherein when the processor executes a computer program:

The step of the drive control method according to any one of claims 1 to 14.
A household electrical appliance, including:

load;

The drive control device according to claim 15;

A drive control circuit, the drive control circuit is controlled by the drive control device, the drive control circuit is provided with at least one switching device, and the switching device is configured to control a power supply signal to supply power to the load.
The household electrical appliance according to claim 16, wherein:

The home appliance includes at least one of an air conditioner, a refrigerator, a fan, a range hood, a vacuum cleaner, and a computer host.
A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed, the steps of the drive control method according to any one of claims 1 to 14 are realized.