There are serious electromagnetic compatibility (EMC) problems in electric vehicles. In order to explain and solve them, a systematic method to analyze conducted interferences of the electric drive system is shown in this paper. This method represents the effects of the power battery which is the most different part between electric drive systems used in electric vehicles and other cases. Also, Equivalent models are established from power electronics devices to the entire system by considering both the working mechanism and stray parameters. Firstly, insulated gate bipolar transistor (IGBT) and inverter are studied as the main interference source. A new expression is put forward to estimate the frequency domain features of the inverter disturbances. Then, power battery and electric motor are discussed as the main propagation paths. Their high frequency circuit models are given with parameters obtained from tests and measurements. Finally, the system model is established. The system interferences are analyzed to get their generation causes, influence factors and frequency domain characteristics. Comparisons between simulations and experiments verify the correctness of the models and the method.
2. Lei, J.-Z., C.-H. Liang, W. Ding, and Y. Zhang, "EMC analysis of antennas mounted on electricity large platforms with parallel FDTD methods," Progress In Electromagnetics Research, Vol. 84, 205-220, 2008.
3. Ala, G., et al., "Evaluation of radiated EMI in 42-V vehicle electrical systems by FDTD simulation," IEEE Trans. Vehicular Technology, Vol. 56, No. 4, 1477-1484, Jul. 2007.
4. Lecointe, J.-P., B. Cassoret, and J.-F. Brudny, "Distinction of toothing and saturation effects on magnetic noise of induction motors," Progress In Electromagnetics Research, Vol. 112, 125-137, 2011.
5. Jian, L. and K.-T. Chau, "Design and analysis of a magneticgeared electronic-continuously variable transmission system using finite element method," Progress In Electromagnetics Research, Vol. 107, 47-61, 2010.
6. Touati, S., R. Ibtiouen, O. Touhami, and A. Djerdir, "Experimental investigation and optimization of permanent magnet motor based on coupling boundary element method with permeances network," Progress In Electromagnetics Research, Vol. 111, 71-90, 2011.
7. Wu, Q., et al., "EMC design for HEV drive system," IEEE International Symposium on Microwave, Communications , 1361-1364, Hangzhou, China, 2007.
8. Revol, B., et al., "EMI study of three-phase inverter-fed motor drives," IEEE Trans. Industry Applications, Vol. 47, No. 1, 223-231, Jan.-Feb. 2011.
9. Akagi, H. and T. Doumoto, "An approach to eliminating high-frequency shaft voltage and ground leakage current from an inverter-driven motor," IEEE Trans. Industry Applications, Vol. 40, No. 4, 1162-1169, Jul.-Aug. 2004.
10. Li, W., et al., "A statistical model of noises at input port of inverter and its coupling to low voltage cable on fuel cell bus," IEEE International Symposium on Electromagnetic Compatibility, 1-6, Hawaii, USA, 2007.
11. Labrousse, D., B. Revol, and F. Costa, "Common-mode modeling of the association of N-switching cells: Application to an electric-vehicle-drive system," IEEE Trans. Power Electronics, Vol. 24, No. 11, 2852-2859, Nov. 2010.
12. Li, W., et al., "High frequency conducted disturbance analysis of driving system in fuel cell vehicle," The 4th Asia-Paciˉc Conference on Environmental Electromagnetics, 724-727, Dalian, China, 2006.
13. Guttowski, S., et al., "EMC issues in cars with electric drives,", 777-782, Istanbul, Turkey, 2003.
14. Lee, Y. H. and A. Nasiri, "Analysis and modeling of conductive EMI noise of power electronics converters in electric and hybrid electric vehicles," Applied Power Electronics Conference and Exposition, 1952-1957, Austin, USA, 2008.
15. Chen, S., et al., "Towards EMI prediction of a PM motor drive for automotive applications," Applied Power Electronics Conference and Exposition, 14-22, Miami, USA, 2003.
16. Mohan, N., T. M. Undeland, and W. P. Robbins, Power Electronics Converters, Applications and Design, 3rd Edition, Wiley, 2003.
17. Chen, M. and G. A. Rincon-Mora, "Accurate electrical battery model capable of predicting runtime and I-V performance," IEEE Trans. Energy Conversion, Vol. 21, No. 2, 504-511, Jun. 2006.
18. Gao, L., S. Liu, and R. A. Dougal, "Dynamic lithium-ion battery model for system simulation," IEEE Trans. Components and Packaging Technologies, Vol. 25, No. 3, 495-505, Sep. 2002.
19. Hoene, E., et al., "RF-properties of automotive power batteries," IEEE International Symposium on Electromagnetic Compatibility, 425-428, Istanbul, Turkey, 2003.
20. Hunt, G., "Freedom car battery test manual for power-assist hybrid electric vehicles," , INEEL, Idaho Falls, 2003.
21. Boglietti, A., E. Carpaneto, and P. di Torino, "Induction motor high frequency model," IEEE Industry Applications Conference, 34th IAS Annual Meeting, 1551-1558, Phoenix, USA, 1999.
22. Mirafzal, B., et al., "Universal induction motor model with low-to-high frequency response characteristics," Industry Applications Conference, 41st IAS Annual Meeting, 423-433.
23. Liang, J., L. Jian, G. Xu, and Z. Shao, "Analysis of electromagnetic behavior in switched reluctance motor for the application of integrated air conditioner on-board charger system," Progress In Electromagnetics Research, Vol. 124, 347-364, 2012.