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

An operation control and drive control circuit technology, applied in the fields of computer readable storage media and home appliances, can solve problems such as low operation efficiency, and achieve the effects of improving energy efficiency, preventing shock, and reducing conduction power consumption

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

[0003] The power factor of the PFC control scheme realized by continuous PWM output is very low at low loads. As the load decreases, the proportion of the conduction loss to the total power will increase, and eventually the operating efficiency will be relatively low.

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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] like figure 1 As shown, according to the operation control method of an embodiment of the present invention, the drive control circuit includes a power factor correction module, and the power factor correction module includes a switching device, so as to control the AC power supply signal by outputting an action signal to the switching device To supply power to the load, the operation control method includes:

[0072] Step 102, the AC power supply signal reaches any zero-crossing point, and the duration of the action signal in the current state satisfies a preset switching condition, and a state switching operation is performed at the zero-crossing point, wherein the state of the action signal is Including an output state and a stop output state, the bus voltage is in an upward trend in the output state, and in the output stop state, the switch tube stops switching, and the bus voltage is in a downward trend.

[0073] In the operation control method suitable for the dr...

Embodiment 2

[0081] figure 2 A schematic flowchart of an operation control method according to another embodiment of the present invention is shown.

[0082] like figure 2 As shown, the operation control method of another embodiment of the present invention includes:

[0083] Step 202, detecting the running power consumption of the load;

[0084] Step 204, determining the rise rate of the bus voltage in the drive control circuit in the output state according to the operating power consumption of the load;

[0085] Step 206, determining a first maximum duration according to the rising rate, and using the first maximum duration as a first preset switching condition;

[0086] Step 208 , determining, according to the operating power consumption of the load, a rate of decrease of the bus voltage in the drive control circuit in the output stop state;

[0087] Step 210, determining a second maximum duration according to the falling rate, and using the second maximum duration as a second pre...

Embodiment 3

[0094] image 3 A schematic flowchart of an operation control method according to another embodiment of the present invention is shown.

[0095] like image 3 As shown, the operation control method according to another embodiment of the present invention includes:

[0096] Step 302, if it is detected that the AC power supply signal reaches the zero-crossing point, calculate the sum of the first duration and the AC half-wave duration to be experienced, and determine it as the sum of the first duration;

[0097] Step 304, judging whether the sum of the first durations is greater than the first maximum duration;

[0098] Step 306, if it is determined that the sum of the first durations is greater than the first maximum duration, control to stop outputting the action signal.

[0099] In this embodiment, the AC power supply signal is detected to determine whether it has reached the zero-crossing point of the half-wave of the AC power supply signal (a positive half-cycle or a neg...

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PUM

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Abstract

The invention provides an operation control method, device and circuit, household appliances and a computer storage medium. The operation control method comprises: if it is detected that an alternating current power supply signal reaches any zero crossing point, and the duration of an action signal in the state meets a preset switching condition, switching the state of the action signal at the zero crossing point, and the state of the action signal comprising an output state and an output stopping state. According to the technical scheme of the invention, the output of an action signal in an intermittent oscillation mode is realized, conduction power consumption of the PFC switch module in the drive control circuit is reduced. The switching operation of the output state is executed at thezero crossing point, so that the stability of the switching operation can be improved, and when the output of an action signal is stopped, the energy of the energy storage inductor on the output flowpath can be effectively released, and the impact on a switching device is prevented.

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] 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. In related technologies, by adopting boost (boost) type PFC circuit structure, and use continuous PWM (pulse width modulation signal) output to control the switch unit to realize the step-up action, so that the phase of the input current is consistent with the input voltage, but there are still the following defects in the application process: [0003] The power factor of the PFC control scheme implemented by continuous PWM output is very low at low loads. As the load decreases, the proportion of conduction ...

Claims

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Application Information

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IPC IPC(8): H02M1/42H02M5/458H02M1/34H02M1/08
CPCH02M1/083H02M1/34H02M1/4225H02M5/458H02M1/0058H02M1/346Y02B70/10
Inventor 胡斌曾贤杰文先仕
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD