电力系统自动化2017，Vol.41Issue(2)：148-154,7.DOI:10.7500/AEPS20160428023
I GB T模块直接串联电压均衡驱动控制技术
Driving Control Technology of Voltage Balance for IGBT Modules Connected in Series
摘要
Abstract
The connection of high voltage insulated gate bipolar transistors (IGBTs) in series is a key issue in the high voltage and power self-commuted coverter application,such as the voltage source converter based high voltage direct current (VSC-HVDC)transmission,the HVDC circuit breaker and other high voltage and high power control equipments.The bottleneck for the operation of high power IGBTs connected in series is balancing their voltage.The mechanism of unbalanced voltage of IGBTs connected in series is analyzed.It is concluded that the key to implementing voltage balance is to solve the off state voltage unbalance and turn-off transient voltage unbalance.The gate level side voltage balance control technique could be a good solution.The gate driver design based on the active voltage control(AVC)technology and the time-delay compensation control strategy are discussed.Through the driving control of turn-off voltage waveform tracked in the active area and the time-delay compensation between the IGBT modules during turn-off transient,the voltage balancing of the devices connected in series is effectively realized.A pulse experimental platform with six 3 300 V/1 200 A IGBT modules directly connected in series and a three-phase converter valve based on this valve arm are set up to verify the two methods.The experimental results show that the practical value of the methods proposed is its beneficial effect on voltage balancing.关键词
柔性直流输电/绝缘栅双极型晶体管(IGBT)/模块串联/电压不平衡/有源电压控制/延时补偿Key words
voltage source converter based high voltage direct current (VSC-HVDC) transmission/insulated gate bipolar transistor (IGBT)/module in series/voltage unbalance/active voltage control/time-delay compensation引用本文复制引用
李伟邦,范镇淇,侯凯,刘建平..I GB T模块直接串联电压均衡驱动控制技术[J].电力系统自动化,2017,41(2):148-154,7.基金项目
江苏省自然科学基金资助项目(BK20140118)。This work is supported by Jiangsu Provincial Natural Science Foundation of China(No.BK20140118) （BK20140118）
