Abstract:With the popularization of electric vehicles and autonomous driving technology, the use of amount of electronic and electrical equipment has put forward increasingly stringent requirements for electromagnetic compatibility (EMC), and the EMC problem in product design has become increasingly important. In this paper, the finite element model is established for the main circuit, including the simple placing of copper, the addition of iron connectors, and the addition of iron connectors and copper conductors. The surface electric field intensity is calculated and the electric field distribution trend is analyzed. The electromagnetic field distribution of fan motor control circuit and main circuit is measured by experiments. The simulation results are proved to be correct, and the reason of local field intensity concentration is analyzed, and the improvement measures are given. The signal integrity analysis of the signal network connecting the MOSFET grid electrode with the main chip of the control circuit was carried out, and the line eye diagram was obtained by simulation calculation. By adjusting the terminal resistance, the height and width of the eye diagram were improved, and the transmission quality of the signal was effectively improved. Through the finite element analysis of the main circuit and the signal integrity simulation of the control circuit, the field strength and line eye diagram are accurately studied. Compared with the traditional qualitative analysis method, more accurate electronic circuit improvement measures are given.
金亮, 冯伟, 寇晓斐, 杨庆新, 王巍. 汽车电子风扇电机控制电路与主电路电磁兼容分析与优化[J]. 电工技术学报, 2018, 33(zk2): 270-277.
Jin Liang, Feng Wei, Kou Xiaofei, Yang Qingxin, Wang Wei. Analysis and Optimization of Electromagnetic Compatibility for Motor Control Circuit and Main Circuit of Automobile Cooling Unit. Transactions of China Electrotechnical Society, 2018, 33(zk2): 270-277.
[1] 钱照明, 陈恒林. 电力电子装置电磁兼容研究最新进展[J]. 电工技术学报, 2007, 22(7): 1-11. Qian Zhaoming, Chen Henglin.State of art of electromagnetic compatibility research on power electronic equipment[J]. Transactions of China Electrotechnical Society, 2007, 22(7): 1-11. [2] 汪泉弟, 王赢聪, 高锋. 电源分配网络阻抗分析及去耦电容优化[J]. 重庆大学学报, 2016, 26(6): 19-26. Wang Quandi, Wang Yingcong, Gao Feng.Impedance analysis and decoupling capacitance optimization of power delivery network[J]. Journal of Chongqing University, 2016, 26(6): 19-26. [3] 郑亚利, 俞集辉, 汪泉弟, 等. 面向点火系统电磁兼容预测的火花塞动态电路模型[J]. 电工技术学报, 2011, 26(2): 8-13. Zheng Yali, Yu Jihui, Wang Quandi, et al.Dynamic circuit model of the spark plug for EMC prediction of ignition system[J]. Transactions of China Electro- technical Society, 2011, 26(2): 8-13. [4] 吕飞燕, 沙斐. PCB上串扰的耦合机理和优化分析模型[J]. 电子与信息学报, 2005, 27(7): 1167-1170. Lü Feiyan, Sha Fei.The coupling meehanism and optimization analysis model for crosstalk in PCB[J]. Journal of Electronics & Information Technology, 2005, 27(7): 1167-1170. [5] Intel’s Mobileye ignored red light while showing off its self-driving car[Z/OL].2018-5-21. Bloomberg News.https://www.mercurynews.com/2018/05/21/intels-mobileye-ignored-red-light-while-showing-off- its-self-driving-car. [6] 颜伟, 赵阳, 王恩荣, 等. 复杂电子系统辐射EMI噪声机理分析与抑制[J]. 中国电机工程学报, 2013, 33(15): 173-180. Yan Wei, Zhao Yang, Wang Enrong, et al.Noise mechanism analysis and suppression for radiated electromagnetic interference noise[J]. Proceedings of the CSEE, 2013, 33(15): 173-180. [7] 盛涛. 机载设备的电磁兼容性设计[D]. 成都: 电子科技大学, 2017. [8] 任国峰. 汽车电控单元的热和电磁兼容优化设计研究[D]. 上海: 上海交通大学, 2015. [9] 崔志新, 刘召庆, 赵长春, 等. 某直升机载夜视导航系统电场辐射发射测试分析与整改[J]. 火控雷达技术, 2015, 44(3): 79-84. Cui Zhixin, Liu Zhaoqing, Zhao Changchun, et al.Analysis and improvement of electric field radiation test of a helicopter-borne night vision navigation system[J]. Fire Control Radar Technology, 2015, 44(3): 79-84. [10] 赵阳, 董颖华, 陆婋泉, 等. 大功率开关磁阻电机EMI噪声综合分析与处理[J]. 中国电机工程学报, 2011, 31(21): 135-141. Zhao Yang, Dong Yinghua, Lu Xiaoquan, et al.EMI noise analysis and process for large-power switched reluctance motor[J]. Proceedings of the CSEE, 2011, 31(21): 135-141. [11] 孟进, 马伟明, 张磊, 等. PWM变频驱动系统传导干扰的高频模型[J]. 中国电机工程学报, 2008, 28(15): 141-146. Meng Jin, Ma Weiming, Zhang Lei, et al.High frequency model of conducted EMI for PWM variable-speed drive systems[J]. Proceedings of the CSEE, 2008, 28(15): 141-146. [12] 贾晋, 赖志达, 王瑞妙, 等. 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. Jin Jia, Lai Zhida, Wang Ruimiao, et al.Research and application on common-mode current scan methods to predict radiated emissions of automotive com- ponents[J]. Transactions of China Electrotechnical Socity, 2018, 33(8): 1674-1684. [13] 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. [14] 贺娇. 高速PCB板传输线信号完整性分析[D]. 武汉: 华中科技大学, 2015. [15] 雷佩, 穆平安, 徐德俊. 高速电路设计中信号完整性的反射分析[J]. 电子科技, 2018, 31(3): 24-27. Lei Pei, Mu Ping'an, Xu Dejun. Analysis of reflection of signal integrity in high-speed circuit design[J]. Electronic Science and Technology, 2018, 31(3): 24-27.