CN110567094A - Control method and device for power-off protection of air conditioner system and air conditioner - Google Patents
Control method and device for power-off protection of air conditioner system and air conditioner Download PDFInfo
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- CN110567094A CN110567094A CN201910875422.6A CN201910875422A CN110567094A CN 110567094 A CN110567094 A CN 110567094A CN 201910875422 A CN201910875422 A CN 201910875422A CN 110567094 A CN110567094 A CN 110567094A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and a control device for power-off protection of an air conditioning system and an air conditioner, and relates to the technical field of air conditioners, wherein the control method comprises the steps of obtaining the current flowing through a power device bridged between direct current buses, the voltage of the direct current buses and the phase current when a compressor runs; judging whether a power failure condition of a power supply is met or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor; and if the predicted power failure condition is met, closing load output. The invention monitors the running state of the system in real time and predicts whether the power supply is powered down or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor. And the load output is immediately closed when the power supply is predicted to be powered off, so that large current cannot be generated, and the compressor is protected from demagnetization. And can effectively reduce controller components and parts electric stress damage, reduce the risk that components and parts became invalid.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and device for power-off protection of an air conditioner system and an air conditioner.
Background
With the improvement of living standard, air conditioners have been introduced into thousands of households. More and more public places such as shopping malls, supermarkets, office buildings and the like are also provided with air conditioning systems to create comfortable environments warm in winter and cool in summer for users.
When the existing air conditioner is in operation, if the power supply is suddenly cut off, because the electrolytic capacitor in the system circuit stores electric energy, the weak current part of the driving plate can still maintain power supply at the moment of power off, so that the single chip microcomputer can still work normally. But the voltage of the strong electric part drops to be low, which can cause the compressor to have the risk of step loss. In addition, the phase current is increased instantly, which may exceed the compressor demagnetization protection current, resulting in compressor demagnetization, and may damage other components of the controller, causing great damage to the air conditioning system, and affecting the service life.
disclosure of Invention
The invention solves the problem that the compressor or other elements can be damaged when the power supply is suddenly cut off in the prior art.
In order to solve the above problems, the present invention provides a method for controlling power-off protection of an air conditioning system, comprising:
Acquiring current flowing through a power device bridged between direct current buses, voltage of the direct current buses and phase current when a compressor runs;
Judging whether a power failure condition of a power supply is met or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor;
And if the predicted power failure condition is met, closing load output.
The invention monitors the running state of the system in real time and predicts whether the power supply is powered down or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor. And the load output is immediately closed when the power supply is predicted to be powered off, so that large current cannot be generated, and the compressor is protected from demagnetization. And can effectively reduce controller components and parts electric stress damage, reduce the risk that components and parts became invalid. And the invention carries out data analysis and control on the basis of the circuit of the existing air-conditioning system, and does not increase the production cost.
Further, the judging whether the predicted power failure condition is met according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor includes: and judging whether the predicted power failure condition of the power supply is met or not according to the current value when the power device is switched on, the voltage variation of the direct current bus and the phase current variation of the compressor.
The invention can accurately predict whether the power supply is powered down or not according to the change characteristic of the system parameters when the power supply is powered down, and can timely close the load output to protect the compressor and circuit components from being damaged.
further, in the step of determining whether the predicted power down condition is satisfied according to the current of the power device, the voltage of the dc bus, and the phase current of the compressor, the predicted power down condition includes: the current value when the power device is conducted in a first time interval is equal to zero; in a second time interval, the voltage variation of the direct current bus is larger than a preset voltage variation threshold, and the voltage of the direct current bus is smaller than the preset voltage threshold; and the phase current variation of the compressor in a third time interval is greater than a preset current variation threshold.
According to the characteristics that the current of the power device is zero when the power supply is powered down, the voltage of the direct-current bus is reduced and the phase current is suddenly increased, the power-down condition of the power supply can be effectively predicted in time, and the reliability of power-down protection of the system power supply is ensured.
Further, the current value when the power device is turned on in the first time interval is equal to zero includes: and if the current value is equal to zero, starting timing, and if the current value is not equal to zero, restarting timing.
the invention starts timing when the current value of the power device is equal to zero, resets the timing if the current at a certain time is not equal to zero, and restarts timing when the current value of the power device is equal to zero again, thereby ensuring the accuracy of power failure judgment, avoiding the load output from being closed due to current change caused by other abnormal conditions of the system and ensuring the stability of the system operation.
Further, the turning off the load output includes: turning off a control signal of an intelligent power module connected to the compressor.
The invention can quickly stop the operation of the compressor by closing the control signal of the intelligent power module, and can effectively protect the compressor and other electronic components in time under the condition of voltage power failure.
Further, the step of obtaining the current flowing through the power device connected in series between the direct current buses includes: obtaining the current of the power device through a sampling resistor connected in series with an emitter of the power device, wherein the power device comprises an insulated gate bipolar transistor.
the invention can effectively obtain the current when the power device is conducted by sampling the current at the emitter of the power device, accurately judge whether the power supply is powered down according to the change condition of the power device, and timely carry out power-down protection control, thereby ensuring the reliability and safety of the system operation.
Another object of the present invention is to provide a control device for power-off protection of an air conditioning system, and a compressor for protecting output of a load by predicting whether a power supply is powered down and turning off the load.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control device for power-off protection of an air conditioning system comprises:
The device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring current flowing through a power device connected between direct current buses in a bridging manner, voltage of the direct current buses and phase current when a compressor runs;
The processing unit is used for judging whether a power failure condition of a power supply is met or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor;
and the control unit is used for closing the load output when the predicted power supply power-down condition is met.
The invention monitors the running state of the system in real time and predicts whether the power supply is powered down or not according to the current of a power device in a system circuit, the voltage change of a direct current bus and the phase current change of a compressor. And when the power failure is predicted, the control signal of the intelligent power module is immediately closed, so that the compressor stops operating quickly, large current cannot be generated, and the compressor is protected from demagnetization. And can effectively reduce controller components and parts electric stress damage, reduce the risk that components and parts became invalid. And the invention carries out data analysis and control on the basis of the circuit of the existing air-conditioning system, and does not increase the production cost.
The third purpose of the present invention is to provide a power-off protection control device for an air conditioning system, which can predict the power failure condition of the power supply in time, and control to turn off the load output, thereby improving the reliability of the system operation.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
A control device for power-off protection of an air conditioning system comprises a memory and a processor:
The memory for storing a computer program;
the processor is used for realizing the control method of the air conditioning system power-off protection when the computer program is executed.
A fourth object of the present invention is to provide an air conditioner, which can timely turn off the load output when the power supply fails, protect the compressor and other components from being damaged, and improve the overall safety of the air conditioner.
in order to achieve the purpose, the technical scheme of the invention is realized as follows:
An air conditioner comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and when the computer program is read and executed by the processor, the control method for power-off protection of an air conditioning system is realized.
Compared with the prior art, the air conditioner and the control device for the power-off protection of the air conditioning system have the same beneficial effects, and are not repeated herein.
The fifth objective of the present invention is to provide a computer-readable storage medium to implement the above-mentioned control method for power-off protection of an air conditioning system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
A computer-readable storage medium storing a computer program which, when read and executed by a processor, implements the control method of air conditioning system power-off protection as described above.
Drawings
FIG. 1 is a schematic diagram illustrating a method for controlling power-off protection of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for controlling power-off protection of an air conditioning system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a control device for power-off protection of an air conditioning system according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a control device for power-off protection of an air conditioning system according to another embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
the air conditioning system mainly comprises a compressor, a condenser, an evaporator, a four-way valve and other components, wherein the components are sequentially connected through pipelines to form a closed system. The refrigerant is continuously subjected to Carnot circulation in the system, and exchanges heat with the surrounding environment through conversion between gas phase and liquid phase, so that the refrigeration and heating functions are realized.
When the air conditioning system operates, the compressor changes the refrigerant from a low-pressure state to a high-pressure state, which creates conditions for changing the refrigerant from a gas state to a liquid state. Meanwhile, the continuous operation of the compressor enables the refrigerant to continuously circulate in the air conditioning system. The performance and reliability of the air conditioning compressor determines the performance and reliability of the entire air conditioning system, and thus, various protections for the compressor are also becoming important.
The invention provides a control method and a device for power-off protection of an air conditioning system, which can monitor the running state of the system in real time, control and close the load output in time when the predicted power failure condition of a power supply is met, protect a compressor from demagnetization damage caused by overlarge phase current, and simultaneously protect other electronic components in the system from being damaged.
Fig. 1 is a schematic diagram illustrating a method for controlling power-off protection of an air conditioning system according to an embodiment of the present invention, in which an AC (direct current) power is rectified and filtered by a rectifying device (Bridge) to be used as a system power. L1 is an inductor, and is connected in series to the post-stage dc bus, and controls the inductor L1 to store energy by controlling the on and off of an IGBT (Insulated Gate Bipolar Transistor) in the circuit, thereby completing the boosting function. The IGBT is bridged between the direct current buses, the collector of the IGBT is connected with one end of the inductor L1 and then connected to the direct current buses, the emitter of the IGBT is connected to another direct current bus through the sampling resistor R2 connected in series with the emitter, and the grid of the IGBT is connected to a PFC (Power Factor Correction) module.
the fast recovery power diode D1 is also connected in series with the dc bus, with its anode connected to the collector of the IGBT and its cathode connected to the anode of the electrolytic capacitor C. The electrolytic capacitor C is also connected between the direct current buses in a bridging mode and used for maintaining the direct current bus voltage to be stable direct current voltage. The anode of the electrolytic capacitor C is connected with the cathode of the fast recovery power diode D1 and then connected to a direct current bus, and the cathode of the electrolytic capacitor C is connected with one end of the sampling resistor R3 and then connected to another direct current bus. The other end of the sampling resistor R3 is connected to one end of an IPM (Intelligent Power Module) Module.
Three output ports of the IPM module are respectively connected to three phases of a motor Comp of the compressor, and PWM 1-PWM 6 are control end signals of 6 IGBTs in the IPM module, which are PWM pulse width signals and are used as control signals for driving the IGBTs to be switched on and off. PWM 1-PWM 6 controls the switch state of each power device in the IPM module to realize the phase change control of the motor winding of the compressor. In an embodiment of the present invention, the outputs of the PWMs 1-6 are turned off when power down is predicted to prevent damage to the compressor.
The following describes a control method for power-off protection of an air conditioning system according to an embodiment of the present invention with reference to fig. 1 and 2.
Fig. 2 is a schematic flow chart illustrating a control method for power-off protection of an air conditioning system according to an embodiment of the present invention, including steps S11-S13.
In step S11, the current flowing through the power device connected across the dc bus, the voltage of the dc bus, and the phase current when the compressor is operating are acquired. In the embodiment of the present invention, the power device includes an IGBT as shown in fig. 1, and an emitter of the IGBT is connected in series with a sampling resistor R2, so that a current Iac flowing through the IGBT is sampled and obtained at a sampling resistor R2. For the voltage Vdc of the direct current bus, sampling is performed where the positive electrode of the electrolytic capacitor C is connected to the direct current bus. And the phase current Is when the compressor Is running Is sampled and acquired at a sampling resistor R3. The invention reasonably predicts whether the power supply is powered down or not according to the running state, namely the change condition of each key parameter, by monitoring the running state of the system in real time.
In step S12, it is determined whether the predicted power down condition is satisfied according to the current of the power device, the voltage of the dc bus, and the phase current of the compressor. The invention samples each key parameter based on the circuit of the existing air conditioning system, and can accurately reflect the system characteristics. And hardware redesign and modification are not needed, so that the production cost is effectively reduced.
In the embodiment of the present invention, the predicting the power-down condition of the power supply includes: judging whether the predicted power failure condition Is met according to the current Iac when the power device Is switched on, the variation of the voltage Vdc of the direct-current bus and the variation of the phase current Is of the compressor, and specifically comprising the following steps:
(1) The current value when the power device is turned on in the first time interval is equal to zero. According to the system characteristics, after the power supply is powered down, when the IGBT is conducted, the current flowing through the IGBT is zero. And during the turn-on period of the IGBT, monitoring the current Iac flowing when the IGBT is turned on in real time. That is, in a first time interval (for example, T1ms) that continues, if the current Iac flowing through the IGBT is 0, then the condition (1) is considered to be satisfied, otherwise the condition (1) is not satisfied. In the embodiment of the present invention, when the current Iac is equal to 0, the timing variable starts timing; when the current Iac is not equal to 0, clearing a timing variable; when the current Iac is detected again to be 0, the timing variable restarts the timing. Therefore, when the current Iac of the system is 0 due to other conditions, the abnormal protection caused by power failure can be avoided, and the reliability of the system operation can be improved.
(2) And in a second time interval, the voltage variation of the direct current bus is greater than a preset voltage variation threshold, and the voltage of the direct current bus is smaller than the preset voltage threshold. When the power supply is powered down, the voltage Vdc of the direct current bus at the rear stage of the system is reduced because the system does not input the power supply. In the embodiment of the invention, the voltage Vdc of the rear-stage direct-current bus is sampled; when the real-time dc bus voltage is sampled at time t1 to be Vdc1 and when the sampled dc bus voltage is Vdc2 at time t2, the dc bus voltage variation Δ Vdc is equal to Vdc1-Vdc 2. If the dc bus voltage variation Δ Vdc is greater than the preset voltage variation threshold Δ Vdc _ threshold and the dc bus voltage Vdc is less than the preset voltage threshold Vdc _ threshold in the second time interval (e.g., T2ms), the condition (2) is considered to be satisfied, otherwise, the condition (2) is not satisfied.
(3) And the phase current variation of the compressor in a third time interval is greater than a preset current variation threshold. After the power supply is powered off, the PWM output is changed, and when the load of the whole machine is not large, the phase current of the compressor can be increased rapidly. In the embodiment of the invention, the compressor operation phase current Is detected in real time, the real-time phase current Is sampled to be Is1 at the time t1, and the real-time phase current Is sampled to be Is2 at the time t2, so that the phase current variation quantity delta Is2-Is 1. If the real-time compressor phase current variation quantity Δ Is greater than the preset current variation threshold value Δ Is _ threshold in the third time interval (for example, T3ms), the condition (3) Is considered to be satisfied, otherwise, the condition (3) Is not satisfied.
in the embodiment of the present invention, when the above conditions (1) to (3) are simultaneously satisfied, it is considered that the predicted power down condition is satisfied. The value ranges of T1, T2 and T3 are 0.1-200 ms, the value range of the preset voltage change threshold value delta Vdc _ threshold Is 80-380V, the value range of the preset voltage threshold value Vdc _ threshold Is 50-200V, and the value range of the preset current change threshold value delta Is _ threshold Is 5-50A. The values of the numerical values can be set according to the actual model, or can be set according to experience, and can be obtained according to experimental data.
In step S13, if the predicted power down condition is satisfied, the load output is turned off. The turning off the load output includes: and turning off signals of a control end of the IPM module connected to the compressor, namely turning off the PWM 1-PWM 6. In the embodiment of the invention, the IPM module is an inverter consisting of 6 IGBTs, wherein the IGBTs are circularly switched on and off according to a certain sequence so as to apply voltage to a stator coil of the compressor and realize the phase change control of a motor winding of the compressor. After the PWM 1-PWM 6 is turned off, the compressor stops running, and no phase current is generated continuously, so that the compressor is protected from demagnetizing magnetic materials of a rotor of the compressor caused by large-current impact, and the situation that controller elements such as a large-current breakdown transistor are damaged can be avoided.
The invention monitors the running state of the system in real time and predicts whether the power supply is powered down or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor. And the load output is immediately closed when the power supply is predicted to be powered off, so that large current cannot be generated, and the compressor is protected from demagnetization. And can effectively reduce controller components and parts electric stress damage, reduce the risk that components and parts became invalid. And the invention carries out data analysis and control on the basis of the circuit of the existing air-conditioning system, and does not increase extra production cost.
Fig. 3 is a schematic structural diagram of a control device 300 for power-off protection of an air conditioning system according to an embodiment of the present invention, which includes an obtaining unit 301, a processing unit 302, and a control unit 303, where:
The obtaining unit 301 is configured to obtain a current flowing through a power device connected across the dc buses, a voltage of the dc buses, and a phase current when the compressor operates.
The processing unit 302 is configured to determine whether the predicted power down condition is satisfied according to the current of the power device, the voltage of the dc bus, and the phase current of the compressor.
The control unit 303 is configured to turn off the load output when the predicted power down condition is met.
fig. 4 is a schematic structural diagram of a control device 400 for power-off protection of an air conditioning system according to an embodiment of the present invention, and the control device includes a memory 401 and a processor 402, wherein:
The memory 401 is used to store computer programs. In embodiments of the present invention, Memory 401 may include a computer system readable medium in the form of volatile Memory, such as Random Access Memory (RAM) and/or cache Memory.
the processor 402 is configured to implement the control method of the air conditioning system power-off protection as described above when executing the computer program.
the control device 400 for power-off protection of the air conditioning system according to the embodiment of the present invention may be a computer device such as a microcontroller.
the invention monitors the running state of the system in real time and predicts whether the power supply is powered down or not according to the current of a power device in a system circuit, the voltage change of a direct current bus and the phase current change of a compressor. And when the power failure is predicted, the control signal of the intelligent power module is immediately closed, so that the compressor stops operating quickly, large current cannot be generated, and the compressor is protected from demagnetization. And can effectively reduce controller components and parts electric stress damage, reduce the risk that components and parts became invalid.
The embodiment of the invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the control method for power-off protection of the air conditioning system.
an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the method for controlling power-off protection of an air conditioning system is implemented.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A control method for power-off protection of an air conditioning system is characterized by comprising the following steps:
acquiring current flowing through a power device bridged between direct current buses, voltage of the direct current buses and phase current when a compressor runs;
Judging whether a power failure condition of a power supply is met or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor;
And if the predicted power failure condition is met, closing load output.
2. The method for controlling power-off protection of an air conditioning system according to claim 1, wherein the determining whether the predicted power-off condition is satisfied according to the current of the power device, the voltage of the dc bus, and the phase current of the compressor comprises: and judging whether the predicted power failure condition of the power supply is met or not according to the current value when the power device is switched on, the voltage variation of the direct current bus and the phase current variation of the compressor.
3. The method for controlling power-off protection of an air conditioning system according to claim 2, wherein in the step of determining whether the predicted power-off condition is satisfied according to the current of the power device, the voltage of the dc bus, and the phase current of the compressor, the predicted power-off condition includes: the current value when the power device is conducted in a first time interval is equal to zero; in a second time interval, the voltage variation of the direct current bus is larger than a preset voltage variation threshold, and the voltage of the direct current bus is smaller than the preset voltage threshold; and the phase current variation of the compressor in a third time interval is greater than a preset current variation threshold.
4. The method for controlling power-off protection of an air conditioning system according to claim 3, wherein the current value when the power device is turned on in the first time interval is equal to zero comprises: and if the current value is equal to zero, starting timing, and if the current value is not equal to zero, restarting timing.
5. The method of any of claims 1-4, wherein said turning off the load output comprises: turning off a control signal of an intelligent power module connected to the compressor.
6. the method for controlling power-off protection of an air conditioning system according to claim 1, wherein the step of obtaining the current flowing through the power devices connected in series between the direct current buses comprises: obtaining the current of the power device through a sampling resistor connected in series with an emitter of the power device, wherein the power device comprises an insulated gate bipolar transistor.
7. a control device for power-off protection of an air conditioning system is characterized by comprising:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring current flowing through a power device connected between direct current buses in a bridging manner, voltage of the direct current buses and phase current when a compressor runs;
The processing unit is used for judging whether a power failure condition of a power supply is met or not according to the current of the power device, the voltage of the direct current bus and the phase current of the compressor;
And the control unit is used for closing the load output when the predicted power supply power-down condition is met.
8. the control device for power-off protection of the air conditioning system is characterized by comprising a memory and a processor:
the memory for storing a computer program;
the processor, when executing the computer program, is configured to implement the control method for air conditioning system power-off protection according to any one of claims 1 to 6.
9. an air conditioner comprising a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to implement the method for controlling the power-off protection of an air conditioning system according to any one of claims 1 to 6.
10. a computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, which is read and executed by a processor, and implements the control method of air conditioning system power-off protection according to any one of claims 1 to 6.
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| CN112268349A (en) * | 2020-10-26 | 2021-01-26 | 珠海格力电器股份有限公司 | Air conditioner, control method thereof, and computer-readable storage medium |
| CN112283907A (en) * | 2020-10-26 | 2021-01-29 | Tcl空调器(中山)有限公司 | Fan shutdown control method and control circuit and air conditioner |
| CN112595903A (en) * | 2020-11-18 | 2021-04-02 | 广东电网有限责任公司梅州供电局 | Single-phase electric meter phase judging method, device and meter reading system |
| CN114362629A (en) * | 2021-12-30 | 2022-04-15 | 上海电机学院 | Energy-saving control system for cage type asynchronous motor |
| CN114704933A (en) * | 2022-02-18 | 2022-07-05 | 青岛海尔空调器有限总公司 | Method and device for controlling direct current air conditioner and air conditioner |
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| CN112283907B (en) * | 2020-10-26 | 2022-06-10 | Tcl空调器(中山)有限公司 | Fan shutdown control method and control circuit and air conditioner |
| CN112595903A (en) * | 2020-11-18 | 2021-04-02 | 广东电网有限责任公司梅州供电局 | Single-phase electric meter phase judging method, device and meter reading system |
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| CN114704933A (en) * | 2022-02-18 | 2022-07-05 | 青岛海尔空调器有限总公司 | Method and device for controlling direct current air conditioner and air conditioner |
| CN114704933B (en) * | 2022-02-18 | 2023-12-19 | 青岛海尔空调器有限总公司 | Method and device for controlling direct-current air conditioner and air conditioner |
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