[논문]차세대 연료전지 자동차용 25kW, 300kHz 고승압 소프트 스위칭 컨버터

김선주; 하이 뜨란; 김진영; 기에우 흐우 푹; 최세완; 박준성; 윤혜성

doi:10.6113/tkpe.2021.26.6.404

차세대 연료전지 자동차용 25kW, 300kHz 고승압 소프트 스위칭 컨버터
25 kW, 300 kHz High Step-Up Soft-Switching Converter for Next-Generation Fuel Cell Vehicles 원문보기

전력전자학회 논문지 = The Transactions of the Korean Institute of Power Electronics, v.26 no.6, 2021년, pp.404 - 410

김선주 (Dept. of Electrical & Information Engineering, Seoul National University of Science and Technology) , 하이 뜨란 (Dept. of Electrical & Information Engineering, Seoul National University of Science and Technology) , 김진영 (Dept. of Electrical & Information Engineering, Seoul National University of Science and Technology) , 기에우 흐우 푹 (Dept. of Electrical & Information Engineering, Seoul National University of Science and Technology) , 최세완 (Dept. of Electrical & Information Engineering, Seoul National University of Science and Technology) , 박준성 (Electric Drive Research Center, Korea Automotive Technology Institute) , 윤혜성 (Power Research Lab., YOUNGHWATECH Co.)

Abstract ▼ AI-Helper

This paper proposes a high step-up converter with zero-voltage transition (ZVT) cell for fuel cell electric vehicle. The proposed converter applies a ZVT cell to a dual floating output boost converter (DFOBC) so that not only the main switch but also the ZVT switch can achieve full-range soft switching. The current rating of the ZVT switch is 17% of the main switch. The proposed converter has high reliability in that no timing issue occurs. Therefore, online calculation is not required. The minimum turn-on time of the ZVT switch that guarantees soft switching at all loads and input/output voltage is obtained by analysis. In addition, the proposed DFOBC allows the use of a 650 V device even at 800 V output and has the advantage of being able to boost the voltage by 3.5 times with 0.56 duty. Planar coupled inductor with PCB winding was successfully implemented with the converter operated at 300 kHz. The 25 kW prototype achieves peak efficiency of 99% and power density of 63 kW/L.

주제어

표/그림 (12)

그림 Fig. 1. Block diagram of fuel cell electric vehicle system.
그림 Fig. 2. Proposed high gain converter with ZVT cell.
표 TABLE I COMPARISON BETWEEN PROPOSED HIGH GAIN DFOBC^[1] AND CONVENTIONAL INTERLEAVING BOOST CONVERTER
그림 Fig. 4. Key waveforms of the proposed DFOBC with ZVT cell.
그림 Fig. 5. Equivalent circuits of mode 1 & 2.
표 TABLE Ⅱ EFFECT OF THE PROPOSED 300KHZ CONVERTER WITH ZVT CELL ON PASSIVE COMPONENT VOLUMES (1P.U.: VOLUME OF 25kHz)
그림 Fig. 6. Comparison between the off-the-shelf EE core and proposed customized core.
그림 Fig. 7. FEA simulation results of planar inductor.
그림 Fig. 8. Proposed 25 kW, 300 kHz, 63 kW/L ZVT DFOBC prototype.
그림 Fig. 9. Experimental results at 25 kW, 300 kHz, 228⎼800 V.
그림 Fig. 10. Measured efficiency.
그림 Fig. 11. Loss breakdown at P_o = 25 kW, V_in = 228 V.

참고문헌 (13)

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상세보기
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상세보기
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상세보기
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상세보기
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