Research and Application on Common-Mode Current Scan Methods to Predict Radiated Emissions of Automotive Components
Jia Jin1,2, Lai Zhida1, Wang Ruimiao3, Wang Quandi4
1. State Key Laboratory of Vehicle NVH and Safety Technology Chongqing CAERI Quality Inspection and Authentication Center Co. Ltd Chongqing 401122 China; 2. Vehicle Engineering Institute Chongqing University of Technology Chongqing 400054 China; 3. State Grid Research Institute of Chongqing Electric Power Company Chongqing 401123 China; 4. State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China;
Abstract：Absorber lined shielded enclosure (ALSE) method of automotive electromagnetic compatibility (EMC) standard CISPR 25, also called the antenna method, requires a large anechoic chamber. However, the main measure of this method is the common-mode current distribution of the test cable bundle. Since this current distribution can be measured easily by current clamps that have much lower demands to the environment, it is possible to predict the level of radiated fields from the measured current distribution. This paper presents a field prediction method, which combines a measured common-mode (CM) current distribution with numerical computations for the radiated fields in the frequency range of 30~1 000MHz. Accordingly, three major problems can be solved compared with ALSE method. First, fast Fourier transform (FFT) based time-domain current or fitting algorithm based frequency-domain current amplitude can derive the needed phase distribution, for estimating the electric fields. Second, the radiation level produced by the common mode current can be calculated based on the common-mode radiation models of a cable bundle and a ground plate. Third, a calibration method is proposed to take into account the actual test environment of ALSE. Different solution approaches have verified the proposed prediction method.
贾晋, 赖志达, 王瑞妙, 汪泉弟. 共模电流扫描法在汽车电子部件电磁辐射预测中的研究与应用[J]. 电工技术学报, 2018, 33(8): 1674-1684.
Jia Jin, Lai Zhida, Wang Ruimiao, Wang Quandi. Research and Application on Common-Mode Current Scan Methods to Predict Radiated Emissions of Automotive Components. Transactions of China Electrotechnical Society, 2018, 33(8): 1674-1684.
[1] CISPR 25 Ed.3-2007 Vehicles, boats and internal combustion engines-Radio disturbance characteristics- Limits and methods of measurements for the pro- tection of on-board receivers[S]. 2007. [2] 汪泉弟, 安宗裕, 郑亚利, 等. 电动汽车开关电源电磁兼容优化设计方法[J]. 电工技术学报, 2014, 29(9): 225-231. Wang Quandi, An Zongyu, Zheng Yali, et al.Electromagnetic compatibility optimization design for switching power supply used in electric vehicle[J]. Transactions of China Electrotechnical Society, 2014, 29(9): 225-231. [3] 周念成, 王佳佳, 王强刚, 等. 电动汽车三相不控整流充电机频域谐波模型[J]. 电工技术学报, 2016, 31(8): 156-162. Zhou Niancheng, Wang Jiajia, Wang Qianggang, et al.Frequency domain harmonic model of electric vehicle charger using three phase uncontrolled rectifier[J]. Transactions of China Electrotechnical Society, 2016, 31(8): 156-162. [4] Smith W T, Frazier K.Prediction of anechoic chamber radiated emissions measurements through use of empirically-derived transfer functions and laboratory common-mode current measurements[C]// IEEE International Symposium on Electromagnetic Compatibility, Denver, CO, USA, USA, 1998, DOI: 10.1109/ISEMC.1998.750122. [5] Schneider D, Beltle M, Siegel B, et al.Radiated emissions of an electric drive system estimated on a bench using disturbance currents and transfer functions[J]. IEEE Transactions on Electromagnetic Compatibility, 2015, 57(3): 311-321. [6] Schneider D, Bottcher M, Schoch B, et al.Transfer functions and current distribution algorithm for the calculation of radiated emissions of automotive components[C]//International Symposium on Elec- tromagnetic Compatibility (EMC Europe), Brugge, Belgium, 2013: 443-448. [7] 张栋, 孔亮, 宁圃奇, 等. 一种基于转移函数的电机驱动系统共模EMI滤波器设计方法[J]. 电工技术学报, 2016, 31(1): 103-111. Zhang Dong, Kong Liang, Ning Puqi, et al.A transfer-function-based design method of common- mode EMI filter in motor drive systems[J]. Transactions of China Electrotechnical Society, 2016, 31(1): 103-111. [8] Radchenko A, Khilkevich V V, Bondarenko N, et al.Transfer function method for predicting the emissions in a CISPR-25 Test-Setup[J]. IEEE Transactions on Electromagnetic Compatibility, 2014, 56(4): 894-902. [9] Li G H, Qian W, Radchenko A, et al.Estimating the radiated emissions from cables attached to a switching power supply in a MIL-STD 461 test[C]// IEEE International Symposium on Electromagnetic Compatibility, Denver, CO, USA, 2013: 626-631. [10] Costa F, Gautier C, Revol B, et al.Modeling of the near-field electromagnetic radiation of power cables in automotives or aeronautics[J]. IEEE Transactions on Power Electronics, 2013, 28(10): 4580-4593. [11] Andrieu G, Reineix A, Bunlon X, et al.Multi- conductor reduction technique for modeling common- mode currents on cable bundles at high frequency for automotive applications[J]. IEEE Transactions on Electromagnetic Compatibility, 2008, 50(1): 175-184. [12] Andrieu G, Reineix A, Bunlon X, et al.Extension of the “Equivalent Cable Bundle Method” for modeling electromagnetic emissions of complex cable bundles[J]. IEEE Transactions on Electromagnetic Compatibility, 2009, 51(1): 108-118. [13] Vives-Gilabert Y, Arcambel C, Louis A, et al.Modeling magnetic radiation of electronic circuits using near-field scanning method[J]. IEEE Transa- ctions on Electromagnetic Compatibility, 2007, 49(2): 391-400. [14] Rinas D, Niedzwiedz S, Jia J, et al.Optimization methods for equivalent source identification and electromagnetic model creation based on near-field measurements[C]//EMC Europe, York, UK, 2011: 298-303. [15] Paul C R.Analysis of Multiconductor Transmission Lines[M]. New York: Wiley&Sons, 1997. [16] Meyer M, Asfaux P.Radiated emissions modeling of a power cable[C]//IEEE International Symposium on Electromagnetic Compatibility, Hamburg, Germany, 2008: 1-5. [17] Matlab, program documentation, version R2010a[M]. Natick, Massachusetts: Mathworks Incorporation, 2010. [18] Paul C R.Introduction to electromagnetic com- patibility[M]. New York: Wiley&Sons, 1992. [19] Zinke O, Brunswig H.Lehrbuch der hochfre- quenztechnik[M]. Springer, 1986. [20] Shi R S, Sabonadare J C, Dacherif D A.Computation of transient electromagnetic fields radiated by a transmission line: an exact model[J]. IEEE Transa- ctions on Electromagnetic Compatibility, 1995, 31(4): 2423-2431. [21] Jia J, Kremer F, Frei S.Modellierung von CISPR-25 Antennenmessungen mittels schneller approxi- mierender Berechnungsverfahren[C]//EMV-Düsseldorf, 2012. [22] Wang J, Fujiwara O, Sasabe K.A simple method for predicting common-mode radiation from a cable attached to a conducting enclosure[C]//Aisa-Pacific Microwave Conference Proceedings, 2001: 1119-1122. [23] Meng J, Teo Y X, Thomas D W P, et al. Fast prediction of transmission line radiated emissions using the hertzian dipole method and line-end discon- tinuity models[J]. IEEE Transactions on Electro- magnetic Compatibility, 2014, 56(6): 1295-1303. [24] Volski V, Vandenbosch G A E. Efficient physical optics approximation for the calculation of radiation pattern of planar antennas located on a finite ground plane[J]. IEEE Transactions on Electromagnetic Compatibility, 2005, 53(1): 460-465. [25] CONCEPT-II, program information[EB/OL]. http:// www.tet.tuhh.de/en/concept/. [26] Jia J, Rinas D, Frei S.An alternative method for measurement of radiated emissions according to CISPR25[C]//EMC Europe, Brugge, 2013: 2-6. [27] Jia J, Alexander A, Rinas D, Frei S.Anwendung von alternativen Verfahren zur Vorhersage von EMV Antennenmessergebnissen nach CISPR-25[C]//EMV- Düsseldorf, 2014. [28] Jia J, Rinas D, Frei S.Prediction of radiated fields from cable bundles based on current distribution measurements[C]//EMC Europe, Rome, 2012: 1-7.
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