用于电流输出型电压源逆变器的三相四线桥保护拓扑及参数选择方法

山东大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (6): 128-135.

用于电流输出型电压源逆变器的三相四线桥保护拓扑及参数选择方法

龚宇雷1,2,谭兴国2,李庆民2,王辉2,孙勇3

1. 济南大学自动化与电气工程学院, 山东济南 250022; 2. 山东大学电气工程学院, 山东济南 250061;
3. 山东电力科学研究院, 山东济南 250021

收稿日期:2010-11-15 出版日期:2011-12-16 发布日期:2010-11-15
作者简介:龚宇雷(1973- ),男,山东聊城人,讲师,博士,主要研究方向为电力电子技术. E-mail: sdugyl@yahoo.cn
基金资助:
国家自然科学基金资助项目07033);山东省自然科学基金资助项目009FQ025)

A bridge-type protection topology for 3-phase 4-wire current output inverters and its parameter selection method

GONG Yu-lei1,2, TAN Xing-guo2, LI Qing-min2, WANG Hui2, SUN Yong3

1. School of Electrical Engineering, Jinan University, Jinan 250022, China; 2. School of Electrical Engineering,
Shandong University, Jinan 250061, China;
3. Shandong Electic Power Research Institute, Jinan 250021, China

Received:2010-11-15 Online:2011-12-16 Published:2010-11-15

摘要/Abstract

摘要：

通过引入无源元件和开关器件的非理想模型,并考虑杂散参数影响,建立了逆变桥的实际模型,对逆变桥正常工作条件下开关器件开关过程进行详细分析,在此基础上推导出逆变桥桥臂电路中冲击尖峰电流的发生机理和危害,提出了一种由无源元件组成的逆变桥桥臂保护拓扑电路。通过对这种逆变桥桥臂保护电路的深入分析和实验研究,证明这种电路可有效地降低功率器件在开关过程中的冲击尖峰电流、电流变化率和电压变化率,可防止开关器件出现误触发以有效保护功率器件。并给出了桥臂保护电路拓扑的参数选择方法。

关键词: 逆变器, 反向恢复时间, 尖峰电流, 保护电路拓扑

Abstract:

The inverter’s actual model was built with the consideration of passive devices’ un-ideal models and the impact of distributed impedance. The causes and potential damages of pulsed current during the switching transition process of the current source inverter bridge in normal operation state was analyzed in detail. A LCRD bridge protection circuit was presented. Detailed analysis as well as experiments based on this bridge protection topology fully validated that the topology could effectively decrease the pulsed current, current transition rate and voltage transition rate in the switching process, and could also protect power devices from inappropriate triggers and possible damage. In addition, the parameter selection method was also given for establishing the bridge protection circuit.

Key words: inverter, reverse restoration time, pulsed current, protection circuit topology

中图分类号:

TM464

龚宇雷1,2,谭兴国2,李庆民2,王辉2,孙勇3. 用于电流输出型电压源逆变器的三相四线桥保护拓扑及参数选择方法[J]. 山东大学学报(工学版), 2011, 41(6): 128-135.

GONG Yu-lei1,2, TAN Xing-guo2, LI Qing-min2, WANG Hui2, SUN Yong3. A bridge-type protection topology for 3-phase 4-wire current output inverters and its parameter selection method[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(6): 128-135.

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