TY - GEN
T1 - Simple method of PV cells balancing for maximum power harvesting in partially shaded environment
AU - Telzhensky, Nikolay
AU - Zeltser, Ilya
AU - Peretz, Mor M.
N1 - Publisher Copyright:
© Copyright 2015 IEEE All rights reserved.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The energy, generated by photovoltaic (PV) module consisting of serially connected PV cells is considerably reduced when a unit is shadowed or has a defect. This problem can be remedied by bypassing the weak units by an active circuitry, such as power converter, connected in parallel to the PV units. This way the power converter balances the power between the PV units. This study evaluates the effectiveness of the unity-gain voltage balancing method to the PV strings comprised of PV cells. The results of this study show that the unity-gain voltage balancing strategy is highly effective when applied to cell-level since no significant voltage differences exist between the MPP voltages of the cells in the string. For steady state operation, the power loss due to the equalization was below 3% even for a high difference in temperature and insolation.
AB - The energy, generated by photovoltaic (PV) module consisting of serially connected PV cells is considerably reduced when a unit is shadowed or has a defect. This problem can be remedied by bypassing the weak units by an active circuitry, such as power converter, connected in parallel to the PV units. This way the power converter balances the power between the PV units. This study evaluates the effectiveness of the unity-gain voltage balancing method to the PV strings comprised of PV cells. The results of this study show that the unity-gain voltage balancing strategy is highly effective when applied to cell-level since no significant voltage differences exist between the MPP voltages of the cells in the string. For steady state operation, the power loss due to the equalization was below 3% even for a high difference in temperature and insolation.
KW - Maximum power point tracking (MPPT)
KW - Photovoltaic systems
KW - Voltage equalization
UR - http://www.scopus.com/inward/record.url?scp=84941243698&partnerID=8YFLogxK
U2 - 10.1109/EEEI.2014.7005816
DO - 10.1109/EEEI.2014.7005816
M3 - Conference contribution
AN - SCOPUS:84941243698
T3 - 2014 IEEE 28th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2014
BT - 2014 IEEE 28th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2014
PB - Institute of Electrical and Electronics Engineers
T2 - 2014 28th IEEE Convention of Electrical and Electronics Engineers in Israel, IEEEI 2014
Y2 - 3 December 2014 through 5 December 2014
ER -