TY - GEN
T1 - Calculation of Degradation Rates of Poly Crystalline Si and CIGS PV Module using Outdoor Linear Interpolation Method
AU - Izumi, Yoshiro
AU - Ueda, Yuzuru
N1 - Funding Information:
ACKNOWLEDGMENT Part of this study was carried out under the support of NEDO "Development of technology for reducing power generation cost of high-performance and reliable solar power generation" project.
Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/6
Y1 - 2018/12/6
N2 - We propose the method to calculate the degradation rate of PV modules by outdoor linear interpolation method (LIM). Since the reference I-V curves which are based on measured I-V curves and used to LIM are created in each season, transitions of expected I-V curves indicate how PV modules degrade. The degradation rates of not only the maximum power but also the other parameters such as short circuit current and open circuit voltage can be calculated from the expected I-V curves. In this paper, the outdoor degradation rates of poly crystalline Si and CIGS were calculated. As a result, in poly crystalline Si case, the degradation rate of maximum power was calculated as -0.4 %/year due to short circuit current reduction. In CIGS case, although the initial power generation performance was better than the datasheet value, the annual degradation rate of the maximum power was calculated as -2.1 %/year. The reason of maximum power reduction was the reduction of both short-circuit current and open-circuit voltage.
AB - We propose the method to calculate the degradation rate of PV modules by outdoor linear interpolation method (LIM). Since the reference I-V curves which are based on measured I-V curves and used to LIM are created in each season, transitions of expected I-V curves indicate how PV modules degrade. The degradation rates of not only the maximum power but also the other parameters such as short circuit current and open circuit voltage can be calculated from the expected I-V curves. In this paper, the outdoor degradation rates of poly crystalline Si and CIGS were calculated. As a result, in poly crystalline Si case, the degradation rate of maximum power was calculated as -0.4 %/year due to short circuit current reduction. In CIGS case, although the initial power generation performance was better than the datasheet value, the annual degradation rate of the maximum power was calculated as -2.1 %/year. The reason of maximum power reduction was the reduction of both short-circuit current and open-circuit voltage.
KW - CIGS
KW - Degradation
KW - Linear interpolation method
KW - Photovoltaic module
KW - Poly crystalline silicon
UR - http://www.scopus.com/inward/record.url?scp=85060578145&partnerID=8YFLogxK
U2 - 10.1109/ICRERA.2018.8566929
DO - 10.1109/ICRERA.2018.8566929
M3 - Conference contribution
AN - SCOPUS:85060578145
T3 - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
SP - 365
EP - 370
BT - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th International IEEE Conference on Renewable Energy Research and Applications, ICRERA 2018
Y2 - 14 October 2018 through 17 October 2018
ER -