车辆电驱动系统电磁干扰源建模及仿真

doi:10.16180/j.cnki.issn1007-7820.2023.07.012

Abstract

Abstract:

In view of the problem of vehicle electromagnetic interference caused by electric drive system, an Electromagnetic Interference (EMI) prediction model of the electric drive system is established using precise modeling method of modules. The model consists of the high-frequency equivalent circuit model of the motor and the inverter model. Based on vector-fitting method, the motor impedance amplitude-frequency curve is fitted, and a high-frequency equivalent circuit model of the motor is established. In the inverter model, the influence of the parasitic parameters between IGBT and radiator on the system EMI is considered. The common mode interference voltage of the electric drive system is predicted using the established EMI model. The results show that the error between the simulated and measured results is less than 10 dB in the range of 0.1~100 MHz.

Key words: electric vehicle, electric drive system, electromagnetic interference, vector-fitting method, equivalent circuit model, simulation modeling, common mode interference voltage, electromagnetic compatibility

CLC Number:

TN97

REN Yongda,XU Qiang,XIE Hongxing,ZHANG Jiahai,LU Hongmin. Modeling and Simulation Research of Electromagnetic Interference Source in Vehicle Electric Drive System[J].Electronic Science and Technology, 2023, 36(7): 81-86.

Figures/Tables 12

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子电路单元	R₁/Ω	R₂/Ω	L/H	C/F
常数项与一次项单元	-12.223 0	-	6.610 0×10^-8	-
实数极点单元	1.083 9×10⁴ 14.215 4	- -	- -	4.885 2×10^-8 4.957 3×10^-10
共轭极点单元	-9.744 6 4.613 1 -6.028 1 -0.922 6 2.868 2 7.936 8×10^-4 -0.021 0	-259.115 2 -32.119 9 -103.288 8 0.964 1 -3.785 9 0.782 3 1.569 1	-6.351 9×10^-5 3.916 8×10^-6 -2.980 1×10^-6 -1.909 7×10^-8 1.116 0×10^-7 7.852 2×10^-10 2.202 0×10^-9	-1.937 5×10^-8 6.994 7×10^-8 -2.204 5×10^-8 -2.389 9×10^-8 1.251 0×10^-8 2.563 3×10^-7 4.366 2×10^-8

子电路单元	R₁/Ω	R₂/Ω	L/H	C/F
常数项与一次项单元	57.531 1	-	-5.240 3×10^-8	-
实数极点单元	-24.880 2 -62.481 3	- -	- -	-1.973 2×10^-7 -9.239 7×10^-11
共轭极点单元	34.8995 4.576 4 19.656 2 -2.089 8 0.058 9	1.064 7×10³ -70.882 1 428.014 2 26.201 6 -0.073 2	1.790 0×10^-4 2.272 2×10^-6 6.396 1×10^-6 -3.768 6×10^-7 2.503 2×10^-10	7.018 6×10^-9 2.711 8×10^-8 1.444 7×10^-9 -1.222 0×10^-8 5.992 3×10^-8

Modeling and Simulation Research of Electromagnetic Interference Source in Vehicle Electric Drive System

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