电动汽车用IGBT和逆变器的电磁兼容性分析_郭彦杰.pdfVIP

第 40 卷 第 6 期：1732-1737 高电压技术 Vol.40, No.6: 1732-1737 2014 年 6 月 30 日 High Voltage Engineering June 30, 2014 DOI: 10.13336/j.1003-6520.hve.2014.06.018 电动汽车用 IGBT 及逆变器的电磁兼容性分析 郭彦杰，王丽芳，廖承林 100190 （中国科学院电工研究所电力电子与电气驱动重点实验室，北京 ） 摘 要：为了抑制电动汽车中的电磁干扰，提高整车的稳定性和安全性，建立了包含杂散参数的绝缘栅极双极型 晶体管(IGBT)和三相电压型脉宽调制（PWM ）逆变器的等效电路模型，计算得到了IGBT 对周边设备的干扰传播 增益；并通过仿真和实车实验分析了电动汽车用逆变器差模电压和共模电流干扰的时域、频域特征以及 IGBT 开 PWM IGBT 关过程、 控制策略和干扰传播路径阻抗对干扰特性的影响。得出如下结论：逆变器的差模干扰主要是由 开关过程和 PWM 控制策略所决定；逆变器的共模干扰本质上是由三相 PWM 脉冲之和不为 0 所引起，并且更多 的受干扰传播路径阻抗特性的影响。上述模型和结论为整车电磁兼容性分析和干扰抑制打下了良好的基础。 关键词：电磁兼容；电磁干扰；绝缘栅极双极型晶体管；等效电路模型；杂散参数；逆变器；电动汽车 Analysis of EMC Characteristics on IGBT and Inverter in Electric Vehicles GUO Yanjie, WANG Lifang, LIAO Chenglin (Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China) Abstract ：In order to suppress the electromagnetic interference (EMI) in electric vehicle (EV) and consequently improve the stability and safety of EVs, we established equivalent circuit models of insulated gate bipolar transistor (IGBT) and pulse width modulation (PWM) inverter that took stray parameters into consideration. Based on the models, the interfe- rence propagation gains were calculated to estimate the influences of IGBT on other setups. Furthermore, the three-phase inverter used in EV was analyzed by simulation to get both time-domain and frequency-dom