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Central current control on three-phase four-wire rectifier(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2009年03
Page:
419-423
Research Field:
Publishing date:

Info

Title:
Central current control on three-phase four-wire rectifier
Author(s):
BORIS Luis Corral Martinez; LI Rui; MA Ke; XU De-hong
Keywords:
rectifiers UPS PWM
PACS:
TM461.5
DOI:
-
Abstract:
The six switches three-phase four-wire rectifier is an appropriate front stage rectifier of the higher power high frequency UPS.Compared with the three-phase three-wire rectifier,the four-wire rectifier produces the positive and negative DC link voltage.For the existence of the zero-wire,the central current would be serious if the control method of three-wire rectifier is used to control the four-wire rectifier.Both the balance control of positive and negative DC link voltage and the probiem of central wire current control are discussed.The mathematic model of three-phase four-wire rectifier is built.The original and control method of the central wire current is analyzed.The control system based on synchronous coordinate is built.A 40kW prototype with wonderful experimental results was built to verify the effectiveness of the controlled strategy.

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Memo

Memo:
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Last Update: 2009-07-09