On-Load Electromagnetic Compatibility Test and Simulation Closed-Loop of the Electric Drive System of New Energy Vehicles

Abstract

In order to solve the problem of high-amplitude and high-frequency interference generated by the electric drive system of new energy vehicles, the author proposes a closed-loop research method for on-load electromagnetic compatibility testing and simulation for electric drive systems of new energy vehicles. The method includes EMC design of the electric drive system on-load test equipment, establishment of a conducted EMI simulation platform for the electric drive system under load conditions, and optimization of the conducted EMI performance of the electric drive system based on key parameters and PWM control. Experimental results show that if the parasitic inductance of the IGBT gate increases, the conducted emission level in the frequency range of 2∼30 MHz will increase, and there is basically no change at the low frequency, and the position of each resonance point shifts to the relatively low frequency. The experiment was replaced with the DPWM3 modulation mode, and the conducted emission amplitude was reduced by about 2 dBμV in the range of 200 kHz∼2 MHz, and there was basically no change on the whole. Conclusion. It is proved that the electromagnetic compatibility closed-loop development technology of the electric drive system of new energy vehicles under load conditions can meet the development needs of new energy vehicles in the environment where energy problems and air pollution problems are becoming more and more serious.

Analysis of Electromagnetic Interference for Anti-Medal UHF RFID Temperature Tag in High Power Electronic Equipment

“…With the increasing number of high-power power electronic equipment and the rapid improvement of equipment performance, the resulting electromagnetic interference becomes more and more serious, which also makes the electromagnetic interference and electromagnetic compatibility problems of power systems receive more and more attention and attention [26]. The problem of electromagnetic interference was first proposed in 1881 by the British scientist Heaviside, usually high-power power electronic equipment radiation electromagnetic interference generated by its own special structure or radiation body, may cause electronic or communication devices, equipment, or system performance degradation or even failure, but also may cause damage to other living or non-living tissue [27] when high-power power electronic equipment working in the low-frequency band The electromagnetic interference is mainly conducted electromagnetic interference [28]. Researchers in Japan have studied and analyzed the electromagnetic interference in DC-DC power converters, and found that the very high voltage variation dv/dt in the switching devices is prone to common mode interference, the parasitic capacitance formed between the switching device and the ground plane provides a conduction path for common mode interference, and the structure of some switching devices also determines the size of the parasitic capacitance [29].…”

Retracted: On-Load Electromagnetic Compatibility Test and Simulation Closed-Loop of the Electric Drive System of New Energy Vehicles

“…Tis article has been retracted by Hindawi following an investigation undertaken by the publisher [1]. Tis investigation has uncovered evidence of one or more of the following indicators of systematic manipulation of the publication process:…”