摘要
动态均压是IGBT串联技术的关键。在分析和研究国内外多种IGBT串联均压电路和均压方法的基础上,采用一种结构简单、控制容易的辅助均压电路对IGBT进行均压,并对其工作机理进行了说明。通过软件Pspice进行仿真,从理论上论证在IGBT串联中辅助均压的可行性。最后,通过试验验证该电路在IGBT串联电路均压的有效性。仿真和实验表明,该电路能够有效地使串入电路中的IGBT实现均压,给工程应用提供了一种IGBT串联的均压方法。
To make the insulated gate bipolar transistor （IGBT） series-connected in a circuit being voltage-balanced,which is the key of IGBTs series-connected technology.Based on studying many types of methods of controlled IGBT series,a simple easily controlled circuit is introduced and is used to make voltage across every IGBT equal.Further more,the circuit wm＇k principle is illustrated in detail.This method is favorable for the IGBTs series dynamic voltage-balancing with soft-Pspice simulation.Finally, a test circuit validates this method.The Simulative and experimental datas show that the proposed assistant-sharing-voltage circuit can diminish overvohage across IGBTs obviously,which is generated because of IGBTs turned on or off at different time.The new technology keep the circuit including series IGBT operate at a good state,it has good prospect some in practice.
出处
《电力电子技术》
CSCD
北大核心
2009年第5期84-86,共3页
Power Electronics
关键词
晶体管
串联
均压/绝缘栅双极型晶体管
驱动信号
transistor
series
sharing-voltage / insulated gate bipolar transistor
driver signal
