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Power supply converting circuit capable of supporting various input waveforms

A power conversion circuit, input waveform 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., to achieve high power factor, high power density, low cost. Effect

Inactive Publication Date: 2013-03-20
XIAN ZHIHAI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a power conversion circuit that can support multiple input waveforms, 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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  • Power supply converting circuit capable of supporting various input waveforms
  • Power supply converting circuit capable of supporting various input waveforms
  • Power supply converting circuit capable of supporting various input waveforms

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Embodiment Construction

[0024] The power conversion circuit that can support multiple input waveforms includes an input current sampling circuit and an output current sampling circuit, the input end of the input current sampling circuit is connected to the output end of the input power supply, the input end of the output current sampling circuit is connected to the load The input terminal is connected, and the output terminals of the input current sampling circuit and the output current sampling circuit are connected to the input terminal of the VMOS switching circuit through the width-adjustable pulse control circuit, the driving signal synthesis circuit, the VMOS switch driving circuit, and the VMOS switching circuit. The input end is also connected to the output end of the input power supply through the freewheeling inductor, and the output end of the VMOS switch circuit is connected to the load through the reverse isolation circuit, the energy storage filter circuit and the load in turn; the output...

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Abstract

A power supply converting circuit capable of supporting various input waveforms comprises an input current sampling circuit and an output current sampling circuit, wherein the input end of the input current sampling circuit is connected with the output end of an input power supply; the input end of the output current sampling circuit is connected with the input end of a load; and the output ends of the input current sampling circuit and the output current sampling circuit are both connected with the input end of a VMOS (V-Groove Metal Oxide Semiconductor) converting circuit sequentially through a width modulation type pulse control circuit, a driving signal synthesis circuit and a VMOS switch driving circuit. And the power supply converting circuit capable of supporting various input waveforms has the advantages of XC (Capacitive Reactance) / DC (Direct Current) expansion (XC) form, non-polarity, multiple waveforms and wide frequency power supply input, DC output, automatic polarity identification and orientation, high conversion efficiency, high power factor, high reliability, high power density, low cost 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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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/088
Inventor 胡家培胡民海
Owner XIAN ZHIHAI POWER TECH
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