Stability Analysis of FCHEV Energy System Using Frequency Decoupling Control Method

Peng Dai; Weinan Sun; Houqing Xie; Yan Lv; Zhonghui Han

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자료유형: 학술저널

저자정보: Peng Dai (China University of Mining and Technology) Weinan Sun (China University of Mining and Technology) Houqing Xie (China University of Mining and Technology) Yan Lv (China University of Mining and Technology) Zhonghui Han (China University of Mining and Technology)

저널정보: 전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.2

발행연도: 2017.3

수록면: 490 - 500 (11page)

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Fuel cell (FC) is a promising power supply in electric vehicles (EV); however, it has poor dynamic performance and short service life. To address these shortcomings, a super capacitor (SC) is adopted as an auxiliary power supply. In this study, the frequency decoupling control method is used in electric vehicle energy system. High-frequency and low-frequency demand power is provided by SC and FC, respectively, which makes full use of two power supplies. Simultaneously, the energy system still has rapidity and reliability. The distributed power system (DPS) of EV requires DC–DC converters to achieve the desired voltage. The stability of cascaded converters must be assessed. Impedance-based methods are effective in the stability analysis of DPS. In this study, closed-loop impedances of interleaved half-bridge DC–DC converter and phase-shifted full-bridge DC–DC converter based on the frequency decoupling control method are derived. The closed-loop impedance of an inverter for permanent magnet synchronous motor based on space vector modulation control method is also derived. An improved Middlebrook criterion is used to assess and adjust the stability of the energy system. A theoretical analysis and simulation test are provided to demonstrate the feasibility of the energy management system and the control method.

#DC bus #DC–DC converter #Frequency decoupling control #Impedance #Permanent magnet synchronous motor

참고문헌 (34)

참고문헌 신청

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[학술대회논문] - P. Thounthong / 2005 / Utilizing fuel cell and supercapacitors for automotive hybrid electrical system / 20 th Annual IEEE Applied Power Electronics Conference and Exposition(APEC) : 90 ~ 96

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