한국태양에너지학회 논문집 (Journal of the Korean Solar Energy Society)

  • 제35권5호
  • /
  • Pages.57-65
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  • 2015
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  • 1598-6411(pISSN)
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  • 2508-3562(eISSN)
한국태양에너지학회 (The Korean Solar Energy Society)
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다양한 환경조건에서 태양전지모듈의 PID회복특성

PID Recovery Characteristics of Photovoltaic Modules in Various Environmental Conditions

  • 이은석 (한국에너지기술연구원 태양광연구실, 충남대학교 에너지과학기술대학원) ;
  • 정태희 (한국에너지기술연구원 태양광연구실) ;
  • 고석환 (한국에너지기술연구원 태양광연구실) ;
  • 주영철 (한국에너지기술연구원 태양광연구실) ;
  • 장효식 (충남대학교 에너지과학기술대학원) ;
  • 강기환 (한국에너지기술연구원 태양광연구실)
  • Lee, Eun-Suk (Photovoltaic Laboratory, Korea Institute of Energy Research, Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Jung, Tea-Hee (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Go, Seok-Hwan (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Ju, Young-Chul (Photovoltaic Laboratory, Korea Institute of Energy Research) ;
  • Chang, Hyo Sik (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • Kang, Gi-Hwan (Photovoltaic Laboratory, Korea Institute of Energy Research)
  • 투고 : 2015.10.07
  • 심사 : 2015.10.28
  • 발행 : 2015.10.30
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초록

The Potential Induced Degradation(PID) in PV module mainly affected by various performance conditions such as a potential difference between solar cell and frame, ambient temperature and relative humidity. The positive charges as sodium ions in front glass reach solar cell in module by a potential difference and are accumulated in the solar cell. The ions accelerate the recombination of generation electrons within solar cell under illumination, which reduces the entire output of module. Recently, it was generally known that PID generation is suppressed by controlling the thickness of SiNx AR coating layer on solar cell or using Sodium-free glass and high resistivity encapsulant. However, recovery effects for module with PID are required, because those methods permanently prevent generating PID of module. PID recovery method that voltage reversely applies between solar cell and frame contract to PID generation begins to receive attention. In this paper, PID recovery tests by using voltage under various outdoor conditions as humidity, temperature, voltage are conducted to effectively mitigate PID in module. We confirm that this recovery method perfectly eliminates PID of solar cell according to repeative PID generation and recovery as well as the applied voltage of three factors mainly affect PID recovery.

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