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논문 기본 정보

자료유형
학술저널
저자정보
Yun Zhang (Tianjin University) Yongping Gao (Tianjin University) Jing Li (University of Nottingham Ningbo China) Mark Sumner (University of Nottingham)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.18 No.2
발행연도
2018.3
수록면
343 - 355 (13page)

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초록· 키워드

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A wide-voltage-conversion range bidirectional DC-DC converter is proposed in this paper. The topology is comprised of one typical LC energy storage component and a special common grounded asymmetric H-bridge with four active power switches/anti-parallel diodes. The narrow output PWM voltage is generated from the voltage difference between two normal (wider) output PWM voltages from the asymmetric H-bridge with duty cycles close to 0.5. The equivalent switching frequency of the output PWM voltage is double the actual switching frequency, and a wide step-down/step-up ratio range is achieved. A 300W prototype has been constructed to validate the feasibility and effectiveness of the proposed bidirectional converter between the variable low voltage side (24V~48V) and the constant high voltage side (200V). The slave active power switches allow VS turn-on and turn-off without requiring any extra hardware. The maximum conversion efficiency is 94.7% in the step-down mode and 93.5% in the step-up mode. Therefore, the proposed bidirectional topology with a common ground is suitable for energy storage systems such as renewable power generation systems and electric vehicles with a hybrid energy source.

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Abstract
I. INTRODUCTION
II. TOPOLOGY
III. OPERATING PRINCIPLE
IV. EXPERIMENT RESULTS AND ANALYSIS
V. CONCLUSIONS
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UCI(KEPA) : I410-ECN-0101-2018-560-001825972