Low power consumption output protection type xc/dc power conversion circuit

A technology of output protection and DC power supply, applied in the field of low power consumption power conversion circuit, can solve the problems of poor reliability, low efficiency, high power consumption, etc., and achieve the effect of high power factor, low cost and low power consumption

Active Publication Date: 2016-05-25
胡家培 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a low-power output protection type XC / DC 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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  • Low power consumption output protection type xc/dc power conversion circuit
  • Low power consumption output protection type xc/dc power conversion circuit
  • Low power consumption output protection type xc/dc power conversion circuit

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Embodiment Construction

[0030] The low-power output protection type XC / DC power conversion circuit includes a VMOS switch circuit and a width-adjustable pulse control circuit. The input end of the VMOS switch circuit is also connected to the output end of the VMOS switch drive circuit, and the output end of the width-adjustable pulse control circuit passes through the drive signal synthesis circuit. It is connected to the input end of the VMOS switch drive circuit, the input end of the width-adjustable pulse control circuit is connected to the output end of the input power supply through the input current sampling circuit, and the input end of the driving signal synthesis circuit is also connected to the VMOS switch circuit through the freewheeling voltage sampling circuit The output end of the adjustable width pulse control circuit is also connected to the output end of the energy storage filter circuit through the output current sampling circuit; the adjustable width pulse control circuit, the drive...

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Abstract

The invention provides a low-power-consumption output protection type XC/DC power switching circuit, which mainly solves the problems that the existing low-voltage new energy power converter is high in power consumption, low in efficiency and bad in reliability. The power switching circuit comprises a VMOS (V-groove metal oxide semiconductor) switching circuit and a width-modulating pulse control circuit, wherein the input end of the VMOS switching circuit is connected with the output end of an input power through a follow current inductor; the output end of the VMOS switching circuit is connected with a load sequentially through a reverse isolating circuit, an energy storage filter circuit and an output protective circuit; and the width-modulating pulse control circuit, a driving signal synthesis circuit, a VMOS switch driving circuit and a follow current voltage sampling circuit form a control circuit. The power switching circuit has the advantages of XC/DC expansibility, nonpolarity, multiple wave forms, wide frequency power input capability, DC (direct current) output capability, automatic polarity identification and orientation, high converting efficiency, high power factor, high reliability, high power density, low cost and the like.

Description

technical field [0001] The invention relates to a low power consumption 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, hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/088H02M1/32
Inventor 胡家培胡民海
Owner 胡家培
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