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Control method and device, household appliance and computer readable storage medium

A control method and a technology of a control device, which are applied in the field of control and can solve problems such as control circuit efficiency and harmonic performance that need to be improved

Active Publication Date: 2020-03-13
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In related technologies, in order to reduce the power consumption of BOOST-type PFC and rectifier, a totem-pole-type PFC module is used to replace BOOST-type PFC and rectifier, but the efficiency and harmonic performance of the control circuit still need to be improved

Method used

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  • Control method and device, household appliance and computer readable storage medium
  • Control method and device, household appliance and computer readable storage medium
  • Control method and device, household appliance and computer readable storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0053] like figure 1 As shown, a schematic flow chart of a control method according to an embodiment of the present invention is shown, including:

[0054] Step S102, detecting the amount of load operated by the control circuit.

[0055] Step S104, according to the load, control to input a plurality of specified pulse signals to the switching device, or control the PFC circuit to work in a high-frequency switching mode.

[0056] In this technical solution, by controlling the PFC circuit to work in high-frequency switching mode or multi-pulse mode according to the load, the rise of the bus voltage can be controlled to ensure the reliable operation of the load, or by controlling the PFC circuit synchronous rectification according to the load Or cut-off work to reduce switching loss and bus voltage loss, which is conducive to improving the harmonic performance and efficiency of the control circuit.

[0057] In the above technical solution, according to the load, control the PFC...

Embodiment 2

[0078] Such as figure 2 As shown, a structural diagram of the BOOST (boost) type PFC circuit according to the control method of an embodiment of the present invention is shown, including:

[0079] AC power supply AC, diode D1, diode D2, diode D3, diode D4, inductance coil L, power tube Q0, capacitor C, inverter bridge and compressor.

[0080] Wherein, the PFC circuit includes: an inductance coil L, a diode D1, a diode D2, a diode D3 and a diode D4. When the switching device is turned on, the AC signal AC is given to the PFC circuit, and a pulse signal is output, wherein, C is an electrolytic capacitor.

Embodiment 3

[0082] Such as image 3 As shown, a structural diagram of a totem pole type PFC circuit according to a control method according to an embodiment of the present invention is shown, including:

[0083] AC power supply AC, inductance coil L, diode D1, diode D2, diode D3 and diode D4 are the reverse biased diodes of power tube Q1, power tube Q2, power tube Q3 and power tube Q4 respectively, and also include capacitor C, inverter bridge and A compressor is an example of a load.

[0084] Among them, the PFC circuit includes: inductance coil L, diode D1, diode D2, diode D3 and diode D4, power tube Q1, power tube Q2, power tube Q3, power tube Q4, and the totem pole type PFC circuit can perform synchronous rectification.

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Abstract

The invention provides a control method, a control device, a household appliance and a computer readable storage medium. The control method is suitable for a control circuit. A PFC (Power Factor Correction) circuit is arranged in the control circuit, and the PFC circuit is connected with the power factor correction circuit. When a switching device in the PFC circuit receives a specified pulse signal, the amplitude of bus voltage output by the PFC circuit is increased, and the control method comprises the following steps: detecting the load capacity operated by the control circuit; and according to the load capacity, controlling the PFC circuit to work in a high-frequency switching mode or a multi-pulse mode, or controlling the PFC circuit to synchronously rectify or cut off. According to the technical scheme, normal operation of the load can be guaranteed, bus voltage loss can be reduced under the condition of low load capacity, meanwhile, switching loss is reduced, and improvement ofharmonic performance and efficiency of the control circuit is facilitated.

Description

technical field [0001] The present invention relates to the technical field of control, in particular, to a control method, a control device, a household electrical appliance, and a computer-readable storage medium. Background technique [0002] In the current inverter air conditioner market, in order to improve the energy efficiency of load operation, rectifiers, inductors, PFC (Power Factor Correction, power factor correction) modules, electrolytic capacitors and inverters are usually used to form the motor (load) control circuit. [0003] In the related art, in order to reduce the power consumption of the BOOST PFC and the power consumption of the rectifier, a totem pole PFC module is used to replace the BOOST PFC and the rectifier. However, the efficiency and harmonic performance of the control circuit still need to be improved. [0004] In addition, any discussion of the background technology in the entire specification does not mean that the background technology must ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42H02P27/08
CPCH02M1/4225H02M1/4233H02P27/085Y02B70/10
Inventor 王晓宇文先仕唐劲添曾贤杰张杰楠
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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