To evaluate the electromagnetic compatibility(EMC)performance of new energy vehicles,it is particularly important to accurately measure the coupling attenuation between HV and LV systems.By studying the vector network analysis method in HV-LV coupling attenuation measurement,a special device for HV-LV coupling attenuation measurement is developed,and the performance optimization scheme of the device is discussed.Through experimental verification,the device achieves a coupling attenuation of less than 1 dB in the frequency range of 0.15 MHz to 108 MHz,and the grounding resistance value is controlled within 2.5 mΩ,which proves the effectiveness and accuracy of the device,and provides strong technical support for electromagnetic compatibility testing of new energy vehicles.
关键词
高压零部件/高压-低压耦合/衰减测量/矢量网络分析法/测量装置
Key words
High-Voltage components/High-Voltage to Low-Voltage coupling/attenuation measurement/vector network analysis/measurement device
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