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Control method, control device, home appliance, and computer-readable storage medium
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A control method and a control circuit technology, applied in the control field, can solve the problems of the control circuit circuit efficiency and harmonic performance to be improved, etc.
Active Publication Date: 2021-09-10
GD MIDEA AIR CONDITIONING EQUIP CO LTD +1
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[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
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Embodiment 1
[0053] Such as figure 1 As shown, a schematicflow chart of a control method according to an embodiment of the present invention is shown, including:
[0054] Step S102, in the first type of time period, control to continuously input a frequency-variable high-frequency pulse signal to the switching device, so as to increase the bus voltage provided by the control circuit.
[0055] Step S104, within the specified duration of the second type of period, control to input a plurality of specified pulse signals to the switching device, so as to reduce the bus voltage provided by the control circuit.
[0056] In this technical solution, by controlling continuous input of variable-frequency high-frequency pulse signals to the switching device during the first type of time period, the bus voltage provided by the control circuit is increased to ensure the reliable operation of the load, and during the second type of time period Within a specified time period, the control inputs multipl...
Embodiment 2
[0078] Such as figure 2 As shown, a circuit structure diagram of a BOOST-promoted PFC according to a control method according to an embodiment of the present invention is shown, including:
[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 circuit structure diagram of a totem pole type PFC 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 present invention proposes a control method, a control device, a home appliance, and a computer-readable storage medium, wherein the control method is suitable for a control circuit, and a PFC (Power Factor Correction, power factor correction) circuit is arranged in the control circuit, and the PFC circuit A switching device is provided, and the control method includes: in the first type of time period, controlling to continuously input a frequency-variable high-frequency pulse signal to the switching device to increase the busvoltage provided by the control circuit; within the specified duration of the second type of time period, controlling Input multiple specified pulse signals to the switching device to reduce the busvoltage provided by the control circuit. Through the technical solution of the present invention, by controlling continuous input of variable-frequency high-frequency pulse signals to the switching devices in different periods of time, changing the busvoltage provided by the control circuit, so that the switching devices in the PFC circuit only have power in a part of the time In this way, the loss of the switching power of the PFC can be reduced, and the working efficiency of the PFC circuit can be improved.
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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