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High-efficiency power-switching circuit with XC-DC extension power inputs

A power conversion circuit, XC-DC technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of poor reliability, high power consumption, low efficiency, etc., and achieve high power factor, high power density, and low cost Effect

Active Publication Date: 2013-03-27
胡家培 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an XC-DC extended power input high-efficiency power conversion circuit, which mainly solves the problems of high power consumption, low efficiency and poor reliability of existing low-voltage new energy power converters

Method used

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  • High-efficiency power-switching circuit with XC-DC extension power inputs
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  • High-efficiency power-switching circuit with XC-DC extension power inputs

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Embodiment Construction

[0027] The XC-DC extended power supply input high-efficiency power conversion circuit includes an input power supply, the output terminals of the input power supply are respectively connected to the input terminals of the freewheeling inductor and the input terminal of the input current sampling circuit, and the output terminals of the freewheeling inductor are connected to the VMOS The input end of the switch circuit is connected, the input end of the VMOS switch circuit is also connected with the output end of the control circuit, and the output end of the VMOS switch circuit is connected with the load through the reverse isolation circuit and the energy storage filter circuit in turn; Type pulse control circuit, drive signal synthesis circuit, VMOS switch drive circuit and freewheeling voltage sampling circuit, the input end of the width-adjustable pulse control circuit is respectively connected with the output end of the input current sampling circuit and the output end of t...

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Abstract

The invention a high-efficiency power-switching circuit with XC-DC extension power inputs and mainly solves problems that the power consumption is high, the efficiency is low and the reliability is poor in a prior low-voltage new-energy power converter. The high-efficiency power-switching circuit with XC-DC extension power inputs comprises an input power source, a follow current inductor, a vertical metal oxide semiconductor (VMOS) switching circuit, a pulse-width modulation control circuit, a drive signal synthetic circuit and the like. The high-efficiency power-switching circuit with XC-DC extension power inputs is provided with XC-DC extension (XC), nonpolarity, multi-waveform and wide-frequency power inputs and DC outputs, and has the advantages that the polarity is identified and oriented automatically; the conversion efficiency, the power factor, the reliability and the power density are high; the cost is low; and the like.

Description

technical field [0001] The invention relates to a power conversion circuit. Background technique [0002] In recent years, photovoltaic power generation, wind power generation, battery power supply and other renewable new energy systems with AC low voltage and DC low voltage power supply have been widely used. It is imperative to improve the power supply efficiency, power supply quality and power supply reliability of low voltage new energy power supply systems. [0003] At present, the power conversion known in the art basically adopts: [0004] 1. AC (AC) input, using a full-wave rectifier to rectify the input AC (AC) power to DC (DC) power, and then convert DC / DC to DC (DC) output. This kind of scheme solves the conversion problem of higher input voltage AC power supply and low-power power supply. However, when low-voltage AC power input and high-power power conversion, because the voltage drop of the AC / DC rectifier circuit is relatively high, high power consumption is...

Claims

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Application Information

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IPC IPC(8): H02M1/088
Inventor 胡家培胡民海
Owner 胡家培