具有软启动功能的EMI直流滤波器设计  

Design of EMI DC Filter with Soft Starting Function

作　　者：王盼[1] 徐虎 袁雷 徐岸非 WANG Pan;XU Hu;YUAN Lei;XU Anfei(Hubei Key Laboratory of Solar Energy Efficient Utilization and Energy Storage Operation Control,Hubei University of Technology,Wuhan 430074,China;CPSS)

机构地区：[1]湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室,武汉430074 [2]中国电源学会

出　　处：《电源学报》2024年第3期182-189,共8页Journal of Power Supply

基　　金：湖北省教育厅科学技术研究项目计划—青年人才资助项目(Q20211405);湖北工业大学博士科研启动基金资助项目(XJ2021003601)。

摘　　要：宽禁带半导体器件的应用使电动汽车的电机驱动系统更加小型化和轻量化,但也引发了更为严重的电磁干扰,使得驱动系统的可靠性面临严峻挑战。为此,以24 V/2 A的EMI直流滤波器为例,通过噪声源、滤波器原理及阻抗影响的分析,依据插入损耗指标进行滤波器参数设计。同时,考虑到整车启动时刻的启动冲击,加入软启动电路,进一步提高电动汽车驱动系统可靠性。实验测试验证了滤波器的电磁干扰抑制效果和软启动性能,证明了滤波器设计的可行性和有效性。The application of wide bandgap semiconductor devices makes the motor drive system of electric vehicles(EVs)more compact and lightweight,but it also causes more serious electromagnetic interference(EMI),which makes the reliability of the drive system face severe challenges.To solve this problem,a 24 V/2 A EMI DC filter is taken as an example,and through the analysis of noise source,filter principle and impedance influence,the filter parameters are designed according to the index of insertion loss.At the same time,considering the starting impact at the starting time of the whole vehicle,a soft starting circuit is added to further improve the reliability of the EV drive system.Experimental results verified the EMI suppression effect and the soft starting function of the filter,proving the feasibility and effectiveness of the filter design.

关 键 词：宽禁带半导体器件 电动汽车 EMI滤波器 插入损耗 软启动 

分 类 号：TM910[电气工程—电力电子与电力传动]