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Field-Line-Circuit Coupling Based Method for Predicting Radiated Electromagnetic Emission of IGBT-PMSM Drive System

XIAO Pei  HE Jiagang  PENG Zishun  LI Jiawei  QIU Yongfeng  LIU Zhu  LI Gaosheng  
【摘要】:Electric drive system with Insulated gate bipolar transistor(IGBT) power device is widely used in Electric vehicle(EV), which consists of inverter, cables and Permanent magnet synchronous motor(PMSM). Due to the fast switching in di/dt and dv/dt of IGBT device,the system produces serious radiated Electromagnetic interference(EMI) through the interconnection cables.Thus, modeling of EMI source, propagation path and load PMSM is the key to accurately evaluate the system's radiation level. In addition, the system's radiated EMI involves the integrated calculation of circuit, cable and electromagnetic field, which cannot be solved by using a single circuit or electromagnetic calculation method. Therefore, this paper develops an effective fieldlinecircuit coupling based method to investigate the radiated EMI problems for IGBT-PMSM drive system,which is validated by experimental measurement. Besides,the impact of power cable parameters on radiated EMI is discussed. The proposed approach has guiding significance for electromagnetic compatibility design of EV.

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