High-power three-phase triple direct-current chopping device

A DC chopping and high-power technology, which is applied in the direction of output power conversion device, conversion of DC power input to DC power output, conversion of AC power input to AC power output, etc., can solve the problem of high maintenance cost, complicated control, wind power generation Problems such as high cost of converter equipment

Inactive Publication Date: 2012-09-19
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a high-power three-phase triple DC chopper device in order to solve the problems of high equipment cost, complicated control and high maintenance cost of existing wind power converters

Method used

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Embodiment Construction

[0011] A high-power three-phase triple DC chopper device, including a motor-side converter device, a grid-side converter device, and a chopper control device; the motor-side converter device includes a three-phase uncontrolled rectifier circuit and a triple boost chopper circuit The power grid side converter device includes a three-phase PWM inverter circuit; the positive output of the three-phase uncontrolled rectifier circuit is connected to the positive input of the triple boost chopper circuit; the negative output of the three-phase uncontrolled rectifier circuit is connected to the The negative input terminal of the triple boost chopper circuit is connected; the positive output terminal of the triple boost chopper circuit is connected to the positive input terminal of the three-phase PWM inverter circuit; the negative output terminal of the triple boost chopper circuit is connected to the three-phase PWM inverter circuit The negative input terminal of the transformer circu...

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Abstract

The invention relates to a wind power generation converting technique, particularly a high-power three-phase triple direct-current chopping device. The high-power three-phase triple direct-current chopping device solves the problems of high device cost, complicated control and high maintenance cost of the conventional wind power generation converter. The high-power three-phase triple direct-current chopping device comprises a motor side converter device, a grid side converter device and a chopping control device; the motor side converter device comprises a three-phase uncontrolled rectifier circuit and a triple boost chopper circuit; the grid side converter device comprises a three-phase PWM (pulse-width modulation) inverter circuit, and the positive output end of the three-phase uncontrolled rectifier circuit is connected with the positive input end of the triple boost chopper circuit. The high-power three-phase triple direct-current chopping device disclosed by the invention effectively solves the problems of high device cost, complicated control and high maintenance cost of the conventional wind power generation converter based on a brand-new structure, and is suitable for wind power generation converting, particularly direct-drive wind power generation converting in a low-air speed area.

Description

technical field [0001] The invention relates to wind power generation conversion technology, in particular to a high-power three-phase triple DC chopper device. Background technique [0002] As a new type of clean renewable energy, wind power has developed rapidly at home and abroad in recent years. In order to realize the integration of wind power into the grid, it is necessary to connect the wind power conversion device between the wind power generating set and the power grid. Existing converter devices for wind power generation generally include a motor-side converter device composed of a three-phase PWM rectifier circuit and a grid-side converter device composed of a three-phase PWM inverter circuit. Among them, the three-phase PWM rectifier circuit is used to rectify the AC voltage with variable amplitude and frequency output of the wind turbine into a DC voltage, and the three-phase PWM inverter circuit is used to invert the DC voltage into a stable amplitude and freq...

Claims

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Application Information

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IPC IPC(8): H02M5/293H02M3/155
CPCY02E10/76
Inventor 赵安定孙建平张雅琨寇金华李康乐杨高兴
Owner CRRC YONGJI ELECTRIC CO LTD
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