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논문 기본 정보

자료유형
학술대회자료
저자정보
Shilei Lu (Tsinghua University) Kai Sun (Tsinghua University) Guoen Cao (Chinese Academy of Sciences, Beijing) Yongdong Li (Tsinghua University) Jung-Ik Ha (Seoul National University) Geon-Hong Min (Seoul National University)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2019-ECCE Asia
발행연도
2019.5
수록면
1,915 - 1,920 (6page)

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Nowadays, the research and design of the DCDC conversion system has become more and more popular in the application of photovoltaic generation into the medium voltage DC (MVDC) grids. A novel high power modular isolated DC-DC converter with high step-up ratio is proposed as a module of the DC-DC conversion system in this paper. Based on the input parallel and output series (IPOS) connections of the proposed modular converters, the system is easy to achieve high capacity and high voltage. A two-stage structure is employed in the proposed converter. The interleaved boost topology is applied to the front-stage, which realizes MPPT for PV arrays with low input current ripples. The full-bridge LLC topology is employed as the back-stage, which lowers power losses by the implementation of softswitching. The voltage gain of the proposed converter is derived in detail. The theoretical analysis and control strategy are studied in depth. Simulation and experiment verify the feasibility and effectiveness of the proposed converter.

목차

Abstract
I. INTRODUCTION
II. SYSTEM CONFIGURATION AND THE PROPOSED CONVERTER
III. CONTROL STRATEGY OF THE PROPOSED CONVERTER
IV. SIMULATION AND EXPERIMENTAL VERIFICATION
V. CONCLUSIONS
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