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Common-mode rejection dual-Boost bridgeless PFC converter

A technology of common-mode suppression and converter, applied in the direction of sustainable manufacturing/processing, high-efficiency power electronic conversion, output power conversion device, etc., can solve the problems of large common-mode interference, low efficiency, and large power loss of PFC circuits, etc. Achieve the effect of weakening common mode interference, high efficiency and reducing loss

Inactive Publication Date: 2016-03-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Aiming at problems such as large power loss and low efficiency of the existing PFC circuit and large common-mode interference of the existing bridgeless PFC circuit, the purpose of the present invention is a common-mode suppressed dual Boost bridgeless PFC converter, which can reduce circuit loss and suppress common mode interference

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  • Common-mode rejection dual-Boost bridgeless PFC converter
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  • Common-mode rejection dual-Boost bridgeless PFC converter

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto. It should be pointed out that, if there are any processes or parameters that are not specifically described in detail below, those skilled in the art can refer to the prior art.

[0024] Such as figure 1 As shown, a common mode suppression dual Boost bridgeless PFC converter consists of two inductors (L1-L2), two IGBTs without anti-parallel diodes (S1-S2), four diodes (D1-D4), three Composed of three capacitors (C1-C3): one end of the first inductance L1 is respectively connected to one end of the input AC voltage source Vin and one end of the first capacitor C1, and the other end of the first inductance L1 is respectively connected to the collector of the first IGBTS1 and the first IGBTS1. The emitter of the second IGBTS2, the anode of the first diode D1, and the cathode of ...

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Abstract

The invention discloses a common-mode rejection dual-Boost bridgeless PFC converter. The converter comprises two inductors, two IGBTs, four diodes and three capacitors, wherein one end of the first inductor is connected with one end of an input voltage and one end of the first capacitor; the other end of the first inductor is connected with the collector of the first IGBT, the emitter of the second IGBT, the anode of the first diode and the cathode of the third diode; one end of the second inductor is connected with the other end of the input voltage and one end of the second capacitor; the other end of the second inductor is connected with the emitter of the first IGBT, the collector of the second IGBT, the anode of the second diode and the cathode of the fourth diode; the positive electrode of the third capacitor is connected with the cathode of the first diode, the cathode of the second diode and one end of a load; and the negative electrode of the third capacitor is connected with the anode of the third diode, the anode of the fourth diode, the other end of the first capacitor, the other end of the second capacitor and the other end of the load. The common-mode rejection dual-Boost bridgeless PFC converter is simple in circuit structure, low in loss and high in efficiency.

Description

technical field [0001] The invention relates to the field of AC / DC conversion, in particular to a common mode suppression dual Boost bridgeless power factor correction circuit. Background technique [0002] At present, a large number of uncontrolled bridge rectifiers have not only caused serious harmonic pollution to the power grid, but also caused a waste of electric energy due to the low power factor of the AC side. The power factor correction technology can realize the AC side current to track the AC side voltage, and can improve the power factor of the AC side. [0003] Due to the existence of the rectifier bridge in the traditional Boost PFC circuit, the efficiency of the whole machine is low. In order to improve conversion efficiency, PFC has been developed from traditional bridged PFC to bridgeless PFC. But the bridgeless PFC circuit widely studied at present usually has relatively large common-mode interference, and the efficiency is not very high. [0004] In ord...

Claims

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Application Information

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IPC IPC(8): H02M1/42H02M1/44
CPCH02M1/4233H02M1/44Y02B70/10Y02P80/10
Inventor 杜贵平柳志飞朱天生杜发达
Owner SOUTH CHINA UNIV OF TECH
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