Design of DC OPTIMIZER for Maximum Power Generation System of Solar Panel

태양광 패널의 최대 전력 발생 시스템을 위한 DC OPTIMIZER 설계

  • Kim, Jeong Gyu (Semiconductor Engineering of CheongJu University) ;
  • Yang, Oh (Semiconductor Engineering of CheongJu University)
  • 김정규 (청주대학교 반도체공학과) ;
  • 양오 (청주대학교 반도체공학과)
  • Received : 2018.02.23
  • Accepted : 2018.03.21
  • Published : 2018.03.31

Abstract

In this paper, the efficiency of the solar system is lowered due to the partial shading such as the environmental factors of the solar panel. In order to solve this problem, a DC OPTIMIZER is proposed for a maximum power generation system of a photovoltaic panel. The proposed DC OPTIMIZER is composed of a buck structure that performs the maximum power point tracking (MPPT) control of each module of the solar panel, thus maximizing the efficiency. In order to verify the proposed DC Optimizer, the efficiency was measured by varying the irradiance using a solar simulator instead of the solar panel. As a result, it showed high efficiency characteristics as the maximum energy conversion efficiency was 99.3% at $800w/m^2$, $900w/m^2$, and the average efficiency was 99.06% excluding $100w/m^2$. The maximum efficiency of MPPT was 99.97% at $200w/m^2$, efficiency showed excellent performance.

Acknowledgement

Supported by : 청주대학교

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