低压直流电机的电磁发射特性的研究

因为低压直流电机EMC特性会对整车EMC特性产生影响，针对低压直流电机干扰信号超过上限时，将会导致电动汽车安全性降低问题，对低压直流电机的电磁发射特性进行研究，包括低压直流电机的阻抗特性、辐射发射特性、瞬态传导发射特性。抑制电磁干扰的措施有接地、屏蔽、滤波等，以中国汽车技术研究中心对某一新型电动汽车电磁兼容性研究为背景，对电磁屏蔽技术进行研究。测试结果表明,电磁屏蔽可以解决低压直流电机的电磁辐射干扰对整车EMC 特性影响的问题。

Study on electromagnetic emission characteristics of low voltage DC moto

Because the EMC characteristic of low voltage DC motor will affect the EMC characteristics of the vehicle, this paper will lead to the problem of reducing the safety of electric vehicle when the low voltage DC motor interference signal exceeds the upper limit, and study the electromagnetic emission characteristics of low voltage DC motor, including low voltage DC Motor impedance characteristics, radiation emission characteristics, transient conduction emission characteristics.The measures to suppress the electromagnetic interference are grounded, shielded, and so on. The paper studies the electromagnetic shielding technology in the background of the research on the electromagnetic compatibility of a new electric vehicle with the China Automotive Technology and Research Center.The test results show that the electromagnetic shielding can solve the problem that the electromagnetic radiation interference of the low voltage DC motor affects the EMC characteristics of the vehicle.