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Control method and system of PFC circuit in air conditioner and air conditioner

A control method and technology for a control system, applied in heating and ventilation control systems, space heating and ventilation, heating and ventilation safety systems, etc., can solve problems such as energy waste, power consumption, etc. The effect of reducing power consumption

Active Publication Date: 2015-11-25
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

At this time, if the PFC circuit is still turned on, it will undoubtedly consume extra power, resulting in a waste of energy

Method used

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  • Control method and system of PFC circuit in air conditioner and air conditioner
  • Control method and system of PFC circuit in air conditioner and air conditioner
  • Control method and system of PFC circuit in air conditioner and air conditioner

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] The control method and system of the PFC circuit in the air conditioner and the air conditioner according to the embodiments of the present invention will be described below by taking an inverter air conditioner as an example.

[0033] figure 1 It is a flowchart of a control method for a PFC circuit in an air conditioner according to an embodiment of the present invention.

[0034] Such as figure 1 As shown, the control method of the PFC circuit in the air conditioner of the embodiment of the present invention includes t...

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PUM

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Abstract

The invention discloses a control method and a system of a PFC circuit in an air conditioner and the air conditioner, wherein the method comprises the following steps: input current and input voltage of the PFC circuit are detected, and an effective value of the input current and a peak value of the input voltage of the PFC circuit are obtained; weak magnetic critical voltage of a compressor is calculated according to compressor parameters and operation parameters; and the opening and the shutoff of the PFC circuit are controlled according to the effective value of the input current and the peak value of the input voltage of the PFC circuit and the weak magnetic critical voltage of the compressor. The control method of the PFC circuit in the air conditioner can reduce the consumption of electric energy by the PFC circuit.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a control method and system for a PFC circuit in an air conditioner and the air conditioner. Background technique [0002] In inverter air conditioners, AC power needs to be converted into DC power through a rectifier circuit to drive loads such as compressors. When the operating frequency of the compressor is high, if the compressor cannot be provided with a high input voltage, it will cause the compressor to enter a state of deep field weakening, thereby affecting the performance of the air conditioner. Therefore, currently, a Boost type PFC (Power Factor Correction, power factor correction) circuit is usually connected between the rectifier circuit and the compressor to increase the input voltage of the compressor. At the same time, when the operating frequency of the compressor is high, the power factor of the compressor needs to be improved through a PFC circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00H02M1/42
CPCF24F11/30H02M1/4216Y02B70/10
Inventor 黄招彬
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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