Multi-waveform input adaptive power converter with output protection

An adaptive power supply and output protection technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of high power consumption, low efficiency, poor reliability, etc., and achieve low power consumption, low cost, and high power factor Effect

Inactive Publication Date: 2013-03-27
XIAN ZHIHAI POWER TECH
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0008] The invention provides a multi-waveform input adaptive power converter with output protection, which mainly solves th

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  • Multi-waveform input adaptive power converter with output protection
  • Multi-waveform input adaptive power converter with output protection
  • Multi-waveform input adaptive power converter with output protection

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Embodiment Construction

[0028] The multi-waveform input adaptive power converter with output protection includes a VMOS switch circuit and a width-adjustable pulse control circuit. The input end of the VMOS switch circuit is connected to the output end of the input power supply through a freewheeling inductance, and the output The terminal is connected to the load through the reverse isolation circuit and the energy storage filter circuit in turn, the input terminal of the VMOS switch circuit is also connected to the output terminal of the VMOS switch drive circuit, and the output terminal of the width-adjustable pulse control circuit is synthesized by the driving signal The circuit 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 throu...

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Abstract

The invention provides a multi-waveform input adaptive power converter with output protection and mainly solves the problems of high power consumption, low efficiency and poor reliability of the existing low-voltage new energy power converter. The power converter comprises a V groove metal oxide semiconductor (VMOS) switching circuit and a width modulation type pulse control circuit, wherein the input end of the VMOS switching circuit is connected with the output end of an input power through a freewheeling inductor, and the output end of the VMOS switching circuit is connected with a load through a reverse isolation circuit, an energy storage filter circuit and an output protection circuit; the width modulation type pulse control circuit, a drive signal combination circuit, the VMOS switching circuit and a freewheeling voltage sampling circuit constitute a control circuit; and the output protection circuit is further arranged in front of the load. The power converter can achieve stable output without distinction on multi-waveform of alternate current and direct current.

Description

technical field [0001] The invention relates to a power converter. 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 generate...

Claims

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Application Information

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IPC IPC(8): H02M1/088H02M1/32
Inventor 胡家培胡民海
Owner XIAN ZHIHAI POWER TECH
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