The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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A Novel DPP Converter Integrating Converters for Multiple Photovoltaic Submodules

다수의 Photovoltaic Submodule용 컨버터를 통합한 DPP 컨버터

  • Lim, Ji-Hoon (Dept. of Electronic Engineering, Inchoen National University) ;
  • Lee, Dong-In (Dept. of Electronic Engineering, Inchoen National University) ;
  • Hyeon, Ye-Ji (Dept. of Electronic Engineering, Inchoen National University) ;
  • Choi, Jae-Hyuk (Advanced Electrification Engineering Design Team, Hyundai Motor Company) ;
  • Youn, Han-Shin (Dept. of Electronic Engineering, Inchoen National University)
  • Received : 2021.09.20
  • Accepted : 2021.10.08
  • Published : 2022.02.20
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Abstract

Recently, photovoltaic (PV) systems have been gradually applied in eco-friendly vehicle applications to improve fuel economy. The relevant market is expected to continue to grow because the installation of large-capacity PV systems to other eco-friendly vehicles, such as electric buses and trains, is being considered. However, in a PV system, power imbalance between submodules and low power generation efficiency occur due to factors such as cell aging, contamination, and shading. To resolve this problem, various differential power processing (DPP) converters have been researched and developed. However, conventional DPP converters suffer from large volume and low efficiency. Therefore, to apply DPP converters to eco-friendly vehicles, increasing efficiency and reducing volume and price compared with existing DPP converters is necessary. In this paper, a novel DPP converter with an integrated transformer is proposed and analyzed. The proposed DPP converter uses a single magnetic component by integrating transformers and secondary sides of conventional DPP converters. Therefore, the proposed DPP converter shows high power density and high efficiency, and it is suitable for PV systems in eco-friendly vehicle applications.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임. (NRF-2020R1C1C1010268) 이 성과는 현대자동차의 연구비 지원에 의하여 연구되었음.

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