한국태양에너지학회:학술대회논문집

The Korean Solar Energy Society (한국태양에너지학회)
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Photovoltaic tracking system considered loss by shadow

음영에 의한 손실을 고려한 태양광 발전 추적 시스템

  • Choi, Jung-Sik (Department of Electrical Control Engineering, Sunchon University) ;
  • Ko, Jae-Sub (Department of Electrical Control Engineering, Sunchon University) ;
  • Jung, Chul-Ho (Department of Electrical Control Engineering, Sunchon University) ;
  • Kim, Do-Yon (Department of Electrical Control Engineering, Sunchon University) ;
  • Jung, Byung-Jin (Department of Electrical Control Engineering, Sunchon University) ;
  • Chung, Dong-Hwa (Department of Electrical Control Engineering, Sunchon University)
  • 최정식 (순천대학교 전기제어공학과) ;
  • 고재섭 (순천대학교 전기제어공학과) ;
  • 정철호 (순천대학교 전기제어공학과) ;
  • 김도연 (순천대학교 전기제어공학과) ;
  • 정병진 (순천대학교 전기제어공학과) ;
  • 정동화 (순천대학교 전기제어공학과)
  • Published : 2008.04.12
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Abstract

In this paper a novel tracking system is described, regarding the influence of shadow between array, aimed at improving the efficiency of PV tracking system. Comparing with a building site versus capacity power, domestic solar powers have a limited siting. Therefore, each array interferes with the shadow of other arrays. The loss by influence of those shadow can be compensated for by means of control algorithm of the tracking device. The paper suggests a method controlling an altitude for length which is received the shadow influence of PV array. By using an azimuth of current solar position and the length between arrays, the controller of tracking device is able to calculate the length between actual arrays and make a comparison of the shadow length at a specific time with the length between arrays. When the shadow length is longer than the length between arrays, the controller of tracking device can adjust a position by compensating error altitude of the length between arrays at an altitude of current solar position. In the paper, we develop the control algorithm able to minimize the loss caused by the influence of shadow on the PV tracking system, and compared this with conventional output system. The controller has been tested in the laboratory with proposed algorithm and shows excellent performance

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