电动汽车动态工况的EMI测试技术需求与方案设计.docxVIP

电动汽车动态工况的EMI测试技术需求 与方案设计 曾博邓俊泳林道祺林青刘国荣□a 曾博邓俊泳林道祺林青刘国荣 □a 中国电器科学研究院有限公司 摘要： 针对电动汽车高度集成的电力驱动系统可能带來电磁兼容性问题，讨论国际上 现行电动汽车电磁干扰(electromagnetic interference, EMI)测试标准中汽 车工作状况设置，指出动态车辆工况设置及测试方法研究的必要性。并设计动态 车辆工况信息直接、间接测量方案，实时获取车速J’、负载扭矩1；、制动力Fs 参数信息;其次，提出在动态车辆工况下特征频率提取采用实时频谱分析仪，最 大发射值测量采用接收机的EMI测试方法;最后，提出读写时间戳法，实现动态 车辆工况信息、EMI测试数据匹配。该集成方案可实现电动汽车动态工况下的EMI 测试，且测试数据时间戳无累计误差。 关键词： 屯动汽车;动态工况；特征频率提取;发射值测量; 作者简介：曾博(1981-)，男，湖北公安县人，工程师，硕士，主要从事电磁 兼容检测技术研究。 收稿日期：2017-02-11 基金：广州市科技计划项目(201504010037) Technology requirement and scheme design for electrie vehicle EMI measurements in transient condition ZENG Bo DENG Junyong LIN Daoqi LIN Qing LIU Guorong China National Electrie Apparatus Research Institute Co.、 Ltd.; Abstract： For highly int egra ted elec trie drive system of electric vehicle could lead to the electromagnetic compatibility problem, the vehicle conditions precepts of current international electric vehicle electromagnetic interferenee (EMT) measurements standard were discussed. Tt was necessary to study the tran sien t cond ition of the vehicle design and test met hod. On this purpose, direct and indirect real-time measurement methods for transient vehicle conditions information were put forward, and the vehicle speed, load torque and braking force were acquired in real time. EMT measurements method for transient vehicle conditions was also proposed, which charactcristic frequcncy was test by real-time spectrum analyzer and emission was measured by receiver. In order to matching transient vehicle conditions information and EMI measurement data, a read/write timestamp method was present. The discussion shows that integration scheme can realize electrie vehicle EMT measurements in transient condition. There is no accumulated error from the read/write timestamp matching method. Keyword： electric vehicle; transient condition; characteristic frequency extreiction; emission measurement; Received： 2017-02-11 0引言 电动汽车高度集成的电力驱动系统为电磁兼容(electromagnetic compatibility, EMC)测试带来巨大挑战。Gut