Series-Connected HV-IGBTs Using Active Voltage Balancing Control With Status Feedback Circuit

被引：88

作者：

Ji, Shiqi ^{[1
]}

Lu, Ting ^{[1
]}

Zhao, Zhengming ^{[1
]}

Yu, Hualong ^{[1
]}

Yuan, Liqiang ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2015年 / 30卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Active voltage balancing control; series-connected IGBTs; status feedback; PHYSICAL MODEL ANALYSIS;

D O I：

10.1109/TPEL.2014.2360189

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Transient voltage unbalance is the major problem that limits the application of series-connected IGBTs in highvoltage and high-power converters. Asynchronous gate delay causes series-connected IGBTs not to turn-on and turn-off at the same time resulting in severely unbalanced voltage sharing. An active voltage balancing control technique is proposed in this paper to solve the asynchronous gate delay problem. By sampling the feedback signal caused by unbalanced voltage sharing, the microcontroller generates a time delay for the gate driver to compensate the asynchronous gate delay. The most vital part of active voltage balancing control, the status feedback circuit, is also discussed in detail in this paper. The function of the status feedback circuit and the effect of active voltage balancing control are verified in a two series-connected HV-IGBTs platform in rated operation (5 kV bus voltage and 600 A load current).

引用

页码：4165 / 4174

页数：10

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