NEW SYNCHRONIZATION METHOD FOR THYRISTOR POWER CONVERTERS TO WEAK AC-SYSTEMS

被引：64

作者：

WEIDENBRUG, R

DAWSON, FP

BONERT, R

机构：

[1] Aachen University of Technology, Institute for Power Electronics and Electrical Drives, Aachen

[2] Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 1993年 / 40卷 / 05期

关键词：

D O I：

10.1109/41.238019

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents an improved approach to obtaining good zero voltage crossing signals. These signals are subsequently used as synchronization signals for a phase controlled thyristor power converter. Detection of accurate zero crossings are possible even under the following conditions: large frequency changes, sudden load changes, and large commutation overlap angles. The improved accuracy in the integrity of the zero crossing is obtained by reconstructing a voltage representing the ac source voltage . This voltage is determined from the distorted thyristor converter input voltage, the converter input current, and an online identification of the source impedance using a microcontroller-based adaptive algorithm. The improvement provided by the new zero crossing detection scheme is verified experimentally.

引用

页码：505 / 511

页数：7

共 16 条

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