Analysis of conduction disturbance voltage method based on electric drive loading

With the rapid development of vehicle electrification and intelligence, the electromagnetic compatibility of drive motor system has been paid more and more attention. The conduction disturbance generated by the electric drive system will spread to the entire automobile circuit system with the circuit network, resulting in serious electromagnetic harassment, affecting the normal work of other automobile parts, and even affecting the safety of automobile driving. Due to the particularity of the loading test of the drive motor, this paper studies the different test arrangements of the conducted disturbance voltage method of the drive motor system. The test results show that there are some differences in the test results of the conducted disturbance voltage method of the drive motor system when the artificial power network is placed on the ground plane and when the insulating foam pad is used and the braided belt is used to ground. It is recommended that the artificial power supply network be placed directly on the ground plane and the low-voltage power line be extended appropriately for conducting disturbance voltage test.