Journal
IEEE ACCESS
Volume 8, Issue -, Pages 66564-66577Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2020.2985528
Keywords
Electric vehicle (EV); DC-DC converter; conducted electromagnetic interference (EMI); EMI filter; EMI suppression
Categories
Funding
- National Key R&D Program of China [2017YFB0102400]
- National Natural Science Foundation of China [51475045]
Ask authors/readers for more resources
In order to solve the problem that the conducted interference voltage of a high voltage/low voltage (HV/LV) DC-DC converter for vehicles exceeds the standard CISPR25-2016, two different design methods of EMI filter for HV power supply were proposed. The first method is to design a wide-band EMI filter at the high-voltage input port of the DC-DC converter. It can achieve the insertion loss of 60dB within 150kHz-108MHz. Another proposed method is to design a PCB-level EMI filter based on the resonance peaks suppression. During the PCB-level EMI filter design process, a high frequency equivalent circuit model of HV/LV DC-DC converter of EV considering the parasitic parameters was established, and by establishing the transfer functions at key frequencies of 200 kHz and 2 MHz, the dominated parameters responsible for the over-standard points were determined. From simulation and experiment results, the filters designed by above two methods can effectively reduce the conducted disturbance and comply with the limits requirements in 150kHz-108MHz. What's more, the PCB-level filter designed by the second method is smaller in size, only 1/5 of the filter size designed by the first method, lower in cost,and easy to be engineering.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available