IGCT驱动板寄生阻抗的综合优化设计方法  

A Comprehensive Optimization Design Method for the Parasitic Impedance of the IGCT Driver Board

作　　者：高旭明 张爱民[1] 黄晶晶[1] 邹健 吕书海 张栋 GAO Xuming;ZHANG Aimin;HUANG Jingjing;ZOU Jian;LÜShuhai;ZHANG Dong(School of Automation Science and Engineering,Xi’an Jiaotong University,Xi’an 710049,China;School of Software,Northwestern Polytechnical University,Xi’an 710072,China;Shandong Electrical Engineering&Equipment Group Digital Technology Co.,Ltd.,Jinan 250002,China)

机构地区：[1]西安交通大学自动化科学与工程学院,西安710049 [2]西北工业大学软件学院,西安710072 [3]山东电工电气集团数字科技有限公司,济南250002

出　　处：《高电压技术》2023年第8期3517-3525,共9页High Voltage Engineering

基　　金：国家自然科学基金联合重点项目(U2106218);中央高校基本科研业务费专项资金(sxzy012020158);四川省科技计划(2021YJ0490)。

摘　　要：集成门极换流晶闸管(integrated gate commutated thyristor,IGCT)是由门极换流晶闸管(gatecommutated thyristor,GCT)和门极驱动电路通过PCB集成的功率组件。GCT的开关控制必须依靠集成门极驱动电路实现,电路中的寄生阻抗会严重影响GCT的开关特性。因此,以目前亟待解决的一类高压大电流IGCT驱动电路板为研究对象,通过对驱动电路的传统布局进行分析,提出一种考虑门极驱动单元和布局的综合优化策略,利用电解电容和陶瓷电容并联的混合电容器组构建驱动单元,同时采用等间距排布的环绕型布局设计电容器组和MOSFET开关组,将寄生阻抗限制在极低水平。最后分别完成了传统型和所提IGCT驱动板设计,实验结果表明所提方案能够有效提升IGCT驱动板性能。Integrated gate commutated thyristor(IGCT)is a power stack that integrates a gate commutated thyristor(GCT)with its gate driver circuit through PCB.The switching control of the GCT must be achieved by relying on an integrated gate driver circuit,and the parasitic impedance in the circuit can seriously affect the switching characteristics of the GCT.Therefore,taking a class of high-voltage and high-current IGCT driver circuit boards that need to be solved urgently as the research object,we analyze the traditional layout of the driver circuit,and propose a comprehensive optimization strategy considering the gate driver unit and layout.The driver unit is constructed by using a hybrid capacitor bank to connect in parallel with electrolytic capacitors and ceramic capacitors,and the capacitor bank and MOSFET switch group with an equally spaced circular layout are designed to limit the parasitic impedance to a very low level.Finally,the tradi-tional and proposed IGCT driver boards are designed,respectively,and the experimental results show that the proposed solutions can effectively improve the performance of the IGCT driver board.

关 键 词：集成门极换流晶闸管 门极驱动板 寄生阻抗 门极驱动布局 混合电容器组 环绕型驱动单元 

分 类 号：TN34[电子电信—物理电子学]