Comparison of Two Design Methods of EMI Filter for High Voltage Power Supply in DC-DC Converter of Electric Vehicle
| Autor: | Mengyuan Lv, Guixing Hu, Rufei Hou, Tao Zhang, Li Zhai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
EMI filter
General Computer Science Computer science 020209 energy DC-DC converter Port (circuit theory) 02 engineering and technology EMI suppression EMI 0202 electrical engineering electronic engineering information engineering Insertion loss General Materials Science conducted electromagnetic interference (EMI) business.industry 020208 electrical & electronic engineering General Engineering Electrical engineering High voltage Filter (video) Equivalent circuit Electric vehicle (EV) lcsh:Electrical engineering. Electronics. Nuclear engineering business Low voltage lcsh:TK1-9971 Voltage |
| Zdroj: | IEEE Access, Vol 8, Pp 66564-66577 (2020) |
| ISSN: | 2169-3536 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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