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이은석(Lee Eun-Suk),정태희(Jung Tea-Hee),고석환(Go Seok-Hwan),주영철(Ju Young-Chul),장효식(Chang Hyo Sik),강기환(Kang Gi-Hwan) 한국태양에너지학회 2015 한국태양에너지학회 논문집 Vol.35 No.5
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.
최주호(Choi, Ju-Ho),정태희(Jung, Tea-Hee),송희은(Song, Hee-Eun),김일수(Kim, Il-Soo),장효식(Chang, Hyo-Sik),강기환(Kang, Gi-Hwan) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.3
Recently, PV module that the most important part of the photovoltaic system is more widened to lower manufacturing costs for module. However, the broad PV module results to the serious mechanical damage coming from installation circumstances such as snow, wind etc of snow and finally lead to the dramatic degradation of the electrical behavior of PV module. In this paper, 3 kinds of PV modules that consist of the different thickness and area of front glass and the diverse cross sectional structures of the frame are prepared for this experiment. The drooped length and electrical outputs of the PV modules are measured by means of applying 600Pa mechanical load to the PV modules from 1200Pa to 5400Pa base on the mechanical load test procedure of K SC IEC 61215 standard. The simulation data are obtained by the simulation tool as ANSYS and those are validate by comparing with the those experimental results figure out relations between the deformation and the constituent part of PV module.
지양근(Yang-Geun Ji),공지현(Ji-Hyun Kong),강기환(Gi-Hwan Kang),김경수(Kyung-Su Kim),유권종(Gwon-Jong Yu),정태희(Tea-Hee Jung),신준오(Jun-Oh Shin),김태범(Tea-Bum Kim),안형근(Hyung-gun Ahn),한득영(Deuk-Young Han) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
현재 양산중인 태양전지모듈의 효율은 일반적으로 태양전지보다 2~3% 낮은 상황이다. 이것은 태양전지모듈의 구성 부품 및 공정기술 등 여러가지 요인에 의한 것으로 태양전지 모듈의 고 효율화를 위해서는 이러한 요소에 대한 분석이 필요하다. 본 논문에서는 태양전지 모듈 구성 부품 중 PV-ribbon이 태양전지모듈에 적용되는 과정에서 발생하는 저항에 대한 분석을 통해 PV-ribbon의 저항이 모듈 효율에 미치는 영향을 실험을 통해 검토하고자 하였다.