Multi-phase rectifier device capable of single-phase power supply

A rectifier and three-phase rectification technology, applied in the direction of output power conversion device, irreversible AC power input conversion to DC power output, electrical components, etc., can solve the problem of DC output voltage without voltage fine-tuning ability, poor performance power supply device, The economy is not ideal, etc.

Inactive Publication Date: 2018-11-02
SHANGHAI WIND NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of rectifying power supply through a common rectifier tube conducting in one direction is widely used, but it is a power supply device with poor performance.
In addition, the DC output voltage of this rectifier has no voltage fine-tuning capability, because there is

Method used

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  • Multi-phase rectifier device capable of single-phase power supply
  • Multi-phase rectifier device capable of single-phase power supply
  • Multi-phase rectifier device capable of single-phase power supply

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] figure 1 For the traditional single-phase rectifier circuit and waveform diagram.

[0025] figure 1 a) is the AC voltage waveform input to the rectifier, which is a standard sinusoidal waveform.

[0026] figure 1 b) is a circuit diagram of a single-phase rectifier bridge, and the rectifier bridge is a bridge rectifier composed of 4 rectifier tubes.

[0027] figure 1 c) is the DC output voltage waveform rectified by the rectifier.

[0028] From figure 1 From the waveform diagram of c), it can be found that if there is no filter capacitor behind the rectifier, the DC voltage after rectification has a very large trough from the peak (the highest voltage value of the sine half wave) to zero voltage. Such a waveform, its rectification The pulsating voltage of the ripple is also very high, that is to say, an electrolytic capacitor with a large enough capacity must be used to filter the DC output voltage, so as to sufficiently overcome the pulsating influence of the larg...

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PUM

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Abstract

The invention discloses a multi-phase rectification topological structure capable of single-phase power supply. The advantage of multi-phase rectification is obvious higher than that of single-phase rectification, the difficulty lies in that a new idea is found out to generate a plurality of vector points from two vector points by a phase-shift device, so that a multi-phase power system is expanded, the ripple after multi-phase bridge rectification is substantially reduced, the voltage stability is remarkably improved, the voltage numerical value is also improved compared with single-phase rectification, and a universal technology of upgrading and upshifting a single-phase rectifier becomes and can be used for substituting the single-phase rectifier in a traditional widely-used electronicproduct such as a rectification power supply in a computer power supply, a television, a washing machine, a frequency-variable air conditioner, a power driver in an LED lamp, a rectifier in a communication device, a charger, a new energy automobile charging pile, a power battery charger and an electrical train.

Description

technical field [0001] The invention belongs to the technical field of electrical conversion, and relates to an electronic rectifier device of a specific grade for single-phase AC power input and DC power output. Background technique [0002] In electronic equipment of various power levels, the single-phase alternating current provided by the grid must pass through a rectifier to obtain direct current as an energy supply. However, the average DC output voltage of a single-phase rectifier is lower than that of a single-phase rectifier. At the same time, the single-phase rectifier obtains direct current with high AC ripple, which must be filtered by a large-capacity electrolytic capacitor to filter out the AC ripple. For stable direct current, a large-capacity electrolytic capacitor is usually required to achieve the predetermined filtering effect, and the filtering loss is large and the power supply efficiency is low. Large-capacity capacitor filtering will also reduce the p...

Claims

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Application Information

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IPC IPC(8): H02M7/06H02M5/06H02M5/08
CPCH02M7/066H02M5/06H02M5/08
Inventor 於岳亮於宙於菲
Owner SHANGHAI WIND NEW ENERGY TECH
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