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Operation control method, device and circuit, household appliance and computer storage medium

A technology for operating control and driving control circuits, applied in the fields of computer-readable storage media and home appliances, can solve the problems of increased conduction loss, low efficiency, and high power consumption of switching tubes, and achieve the effect of reducing conduction loss

Active Publication Date: 2020-12-01
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

[0005] In related technologies, PWM (Pulse-Width Modulation, pulse width modulation signal) is usually used to drive the switch tube to be turned on or off. The commonly used bridgeless totem pole PFC module usually works in high frequency mode, but the high frequency mode is only suitable for In the case of a large load, when the load is small, the conduction loss of the switch tube increases and the efficiency is low, which not only leads to high hardware loss and high power consumption of the drive control circuit, but also is not conducive to further improving the energy efficiency of the load

Method used

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  • Operation control method, device and circuit, household appliance and computer storage medium
  • Operation control method, device and circuit, household appliance and computer storage medium
  • Operation control method, device and circuit, household appliance and computer storage medium

Examples

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Effect test

Embodiment 1

[0080] Such as figure 1 As shown, the operation control method according to an embodiment of the present invention is suitable for a drive control circuit, the drive control circuit includes a power factor correction module, and the power factor correction module includes a switch tube to output to the switch tube The high-frequency action signal controls the power supply signal to supply power to the load, and the operation control method includes:

[0081] Step 102, obtaining the operating parameters of the load;

[0082] Step 104, detecting that the operating parameter is less than a first parameter threshold, and controlling the switching tube to be switched on and off according to the first control mode;

[0083] Step 106: It is detected that the operating parameter is greater than or equal to the first parameter threshold, and the switching tube is controlled according to the second control mode, wherein the first control mode is an uncontrolled rectification mode. In ...

Embodiment 2

[0094] In any of the above embodiments, optionally, the detecting that the operating parameter is greater than or equal to the first parameter threshold, and controlling the switching of the plurality of switching tubes according to the second control mode specifically includes: Acquire the bus voltage of the load; determine the intermittent oscillation control strategy of the second control mode according to the relationship between the bus voltage and the preset lower limit voltage threshold, and the preset upper limit voltage threshold, so that according to the intermittent oscillation The control strategy controls whether to output a high-frequency action signal to the first switch tube and the second switch tube, so that the bus voltage can change between the preset lower limit voltage threshold and the preset upper limit voltage threshold, Wherein, the preset upper limit voltage threshold is greater than the preset lower limit voltage threshold.

[0095] In this embodime...

Embodiment 3

[0121] Such as image 3 As shown, if it is detected that the operating parameter is less than the preset operating parameter threshold, then controlling the opening and closing of the plurality of switching tubes according to the first control mode includes: if it is detected that the operating parameter is less than the preset operating parameter The parameter threshold, in the positive half cycle of the AC power supply signal, controls the third switch tube to be continuously turned off, and controls the fourth switch tube to be continuously turned on; and in the positive half cycle of the AC power supply signal, according to a predetermined The number of times controls the first switch tube and the second switch tube to perform on and off operations alternately. as well as

[0122] If it is detected that the operating parameter is greater than or equal to the preset operating parameter threshold, then obtain the bus voltage of the load; and control the first switching tube...

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Abstract

The invention provides an operation control method, device and circuit, a household appliance and a computer storage medium, and the method comprises the steps: obtaining an operation parameter of a load, and enabling the operation parameter to correspond to the size of the load; when detecting that the operating parameter is smaller than a first parameter threshold, controlling the switching tubeto open and close according to a first control mode; when it is detected that the operation parameters are larger than or equal to the first parameter threshold value, controlling the switching tubesto be opened and closed according to a second control mode, the first control mode being an uncontrolled rectification mode, in the uncontrolled rectification mode, not inputting action signals intothe multiple switching tubes, and the second control mode being an intermittent oscillation control mode. Through the technical scheme of the invention, the conduction power consumption of the switching tube is reduced while the normal operation of the load can be met, the efficiency of power factor correction in the circuit can be improved, the efficient control operation can be realized for theloads with different sizes, and the requirements of harmonic control can be met for different currents.

Description

technical field [0001] The present invention relates to the field of drive control, in particular to an operation control method, an operation control device, a drive control circuit, a household electrical appliance, and a computer-readable storage medium. Background technique [0002] With the development of power electronics technology, active PFC (Power Factor Correction, power factor correction) technology has been widely used due to its advantages of high power factor, small harmonic current, and stable output voltage. [0003] In the related art, although the high-frequency switch control scheme currently adopted by the bridgeless totem pole PFC circuit has higher efficiency than that of the BOOST-PFC (boost power factor correction module) circuit, there is still room for improvement. (requires modification) [0004] PFC (Power Factor Correction, power factor correction) technology is widely used in drive control circuits, and its main function is to improve the powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42
CPCH02M1/4233H02M1/0054Y02B70/10
Inventor 张杰楠黄招彬曾贤杰
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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