基于时间域建模的晶闸管调压装置缓冲电路设计

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Abstract Due to the characteristics of transmission line, devices’ half-controllability, and load circuits, over voltage, over current and voltage and current surge often occur at the moment of turn-on and shut-off in three-phase AC thyristor voltage regulators. RC snubber circuits are able to suppress such surges, the coefficients of which may influence energy loss. In order to solve the problems of optimal coefficients’ configuration, this paper studies the output characteristics of a thyristor in one on period based on time-domain modeling, according to the model with snubber circuit, and establishes the power loss index and mathematical descriptions of impact’s constraint conditions to system. The idea is proposed of achieving energy saving and surges’ suppressions by optimizing power loss index as well as determining snubber circuit’s parameters taking surges as constraint conditions, and it is realized by means of MATLAB. Simulation curves and actual waveforms indicate the result of suppression to surges and energy conservation is obvious, which verifies the effectiveness of such designs.

Key words： Thyristor snubber circuits time-domain modeling power loss

Received: 03 November 2010 Published: 19 March 2014

PACS:

TM302.1

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	Li Kai
	Yuan Feng
	Ding Zhenliang

Cite this article:

Li Kai,Yuan Feng,Ding Zhenliang. Research and Design on Snubber Circuits of Thyristor Voltage Regulator Based on Time-Domain Modeling[J]. Transactions of China Electrotechnical Society, 2012, 27(1): 196-201.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I1/196

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作者简介:李凯男, 1979年生, 博士, 讲师, 研究方向为运动控制系统测试分析、惯性精密测量和数字图像处理。袁峰男, 1963年生, 博士, 教授, 博士生导师, 研究方向为光电测试技术、高速图像处理和惯性设备测试。