大容量电力电子装置中母排杂散电感提取方法的优化研究  

Optimized Stray Inductance Extraction Method of Bus Bar in Large-Capacity Power Electronic Equipment

作　　者：金祝锋 李威辰[1] 胡斯登[1] 张志学 何湘宁[1] Jin Zhufeng;Li Weichen;Hu Sideng;Zhang Zhixue;He Xiangning(College of Electrical Engineering Zhejiang University,Hangzhou 310027 China;CRRC Zhuzhou Institute Co. Ltd,Zhuzhou 412000 China)

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]中车株洲电力机车研究所有限公司,株洲412000

出　　处：《电工技术学报》2017年第14期1-7,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重点资助项目(51490682)

摘　　要：在大容量电力电子装置中,母排的杂散电感在开关器件换流过程中会引入非理想的电压尖峰,并使得系统的电磁干扰进一步恶化。为分析与优化系统性能,需要对母排的杂散电感进行准确提取。相比于传统微分法,应用积分法提取母排杂散电感具有抗噪声能力强、计算结果对波形形状不敏感等优点,然而在简单的积分运算中积分时限的选取对计算结果有较大的影响。提出一种优化的积分形式的母排杂散电感的提取方法,在传统积分法的基础上考虑杂散电阻和测量偏置两个影响因素,提高了计算的准确度。最后,基于1 200V/3 600A的IGBT双脉冲测试平台,对母排进行有限元仿真,通过仿真结果与几种不同方法计算得到的结果进行对比,验证了所提方法的有效性与准确性。In large-capacity power electronic equipment,the stray inductance of the bus bar willnot only cause higher voltage peak but also bring serious EMI issues during the commutation process.Thus,the stray inductance needs to be calculated accurately to analyze and optimize the systemperformance.Compared with the conventional differential method,the integral form is insensitive tothe shape of the current waveform and has anti-noise ability.However,the results are greatly influencedby the boundary of integral.In this paper,an improved integral form of inductance extraction methodfor the bus bar is proposed.Herein,both the stray resistance and the measuring bias are considered toimprove the calculation accuracy.Moreover,a double-pulse testing platform for the1200V/3600AIGBT is built.The stray inductance is extracted through different methods to verify the effectivenessand the accuracy of the proposed method.

关 键 词：叠层母排 杂散电感 积分形式 双脉冲测试 

分 类 号：TM46[电气工程—电器]