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Power factor correction circuit, control method of power factor correction circuit, and power factor correction device

A power factor correction and control method technology, applied in the field of circuits, can solve problems such as poor working reliability, and achieve the effects of strong working reliability, low on-state loss and high efficiency

Inactive Publication Date: 2019-06-21
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a power factor correction circuit and its control method, and a power factor correction device for the problem of poor reliability of the traditional power factor correction circuit.

Method used

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  • Power factor correction circuit, control method of power factor correction circuit, and power factor correction device
  • Power factor correction circuit, control method of power factor correction circuit, and power factor correction device
  • Power factor correction circuit, control method of power factor correction circuit, and power factor correction device

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Embodiment Construction

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0026] see figure 1 , a power factor correction circuit, comprising: a bridgeless converter circuit 10 and an active power decoupling circuit 20, the bridgeless converter circuit 10 is used to connect to an external AC power supply, and the bridgeless converter circuit 10 is connected to an active power decoupling circuit Circuit 20, the active power decoupling circuit 20 is used to connect the external load circuit, the bridgeless conver...

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Abstract

The invention relates to a power factor correction circuit, a control method of the power factor correction circuit, and a power factor correction device. A bridgeless converter circuit of the power factor correction circuit is connected with an active power decoupling circuit; the bridgeless converter circuit is connected with an external alternating current power supply; and the active power decoupling circuit is connected with an external load circuit. According to the power factor correction circuit, the control method of the power factor correction circuit and the power factor correctiondevice, the bridgeless converter circuit is adopted to realize the conversion from an external input alternating current to a direct current; the output direct-current side of the bridgeless convertercircuit is connected with the active power decoupling circuit; and low-frequency ripples in a direct-current power supply can be eliminated through the power decoupling control of the active power decoupling circuit. The power factor correction circuit not only has the advantages of low on-state loss and high efficiency in working but also can avoid the influence on the normal operation of the load circuit due to a large amount of the low-frequency ripples in the direct-current power supply provided for the external load circuit, and has high working reliability.

Description

technical field [0001] The present application relates to the field of circuit technology, in particular to a power factor correction circuit, a control method thereof, and a power factor correction device. Background technique [0002] The power factor refers to the ratio between the effective power and the apparent power. The power factor is a parameter used to measure the power consumption efficiency of the electrical equipment. The power factor can be used to measure the degree to which the power is effectively used. Indicates the higher the utilization rate of electric power. Therefore, the power utilization rate of the electrical equipment can be improved through the adjustment of the power factor by the corresponding circuit, that is, the power factor correction circuit (Power Factor Correction). [0003] Traditional power factor correction circuits are usually realized by using bridgeless converter circuits. Although the use of bridgeless converter circuits for powe...

Claims

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Application Information

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IPC IPC(8): H02M1/42H02M1/15
CPCY02B70/10
Inventor 贺小林刘文斌刘顺李洋
Owner GREE ELECTRIC APPLIANCES INC
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