Power-switching circuit capable of reducing circuit losses

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

Inactive Publication Date: 2014-06-11
XIAN ZHIHAI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The invention provides a power conversion circuit for reducing circuit loss, 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-switching circuit capable of reducing circuit losses
  • Power-switching circuit capable of reducing circuit losses
  • Power-switching circuit capable of reducing circuit losses

Examples

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Embodiment Construction

[0017] The power conversion circuit for reducing circuit loss 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, and the input end of the output current sampling circuit is connected to the input end of the load , the output ends of the input current sampling circuit and the output current sampling circuit are connected to the input end of the VMOS switch circuit through the width-adjustable pulse control circuit, the drive signal synthesis circuit, the VMOS switch drive circuit, and the input end of the VMOS switch circuit is also The output terminal of the VMOS switch circuit is connected to the output terminal of the input power supply through the freewheeling inductance, and the output terminal of the VMOS switch circuit is connected to the load through the reverse isolation circuit, the energy storage filter circuit and the load in tu...

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PUM

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Abstract

The invention provides a power-switching circuit capable of reducing circuit losses. The power-switching circuit mainly solves the problems that an existing low-voltage new energy power converter is high in power consumption, low in efficiency and poor in reliability. The input end of a VMOS switching circuit of the power-switching circuit capable of reducing the circuit losses is further connected with the output end of an input power supply through a freewheeling inductor, and the output end of the VMOS switching circuit is connected with a load sequentially through a reverse isolation circuit and an energy storage filter circuit; the output end of the VMOS switching circuit is further connected with the input end of a driving signal synthesis circuit through a freewheeling voltage sampling circuit; a control circuit is formed by a width modulation pulse control circuit, the driving signal synthesis circuit, a VMOS switching driving circuit and the freewheeling voltage sampling circuit.

Description

technical field [0001] The invention relates to a power conversion circuit for reducing circuit loss, and belongs to the technical field of power conversion. 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...

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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