TY - GEN
T1 - Modified approach for global MPP finding under partial shading
AU - Yahalom, Asher
AU - Minav, Tatiana
AU - Averbukh, Moshe
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - Today, despite the presence of well-developed and high efficient Maximum Power Point Trackers (MPPT) in all PV stations, remains the problem of their proper functionality during partial shading. Existing MPPT algorithms use sequential search procedures, therefore, they may falsely operate during partial shading. The reason of this obstacle is numerous local maximums appearing in the P-I or P-V characteristic curves. This impedes conventional MPPT systems to find the global maximum (GM) and significantly restricts the ultimate electric output of PV plants.The present article proposes the improved algorithm for MPPT functionality. The method based on a photo-current estimation of each PV panel. Owing this information, submitted algorithm provides permanent assessment of the upper and the low limits of regulating parameter (a current or a voltage) between which its optimal value that ensures GM is located. Further, conventional MPPT entering the work can easily find the nearest maximum that obviously is GM.Present work describes this new method to find more accurate and fast estimations of the GM boundaries and to keep GM even during fast changings partial shading conditions, which will cause the higher overall efficiency of MPPT.
AB - Today, despite the presence of well-developed and high efficient Maximum Power Point Trackers (MPPT) in all PV stations, remains the problem of their proper functionality during partial shading. Existing MPPT algorithms use sequential search procedures, therefore, they may falsely operate during partial shading. The reason of this obstacle is numerous local maximums appearing in the P-I or P-V characteristic curves. This impedes conventional MPPT systems to find the global maximum (GM) and significantly restricts the ultimate electric output of PV plants.The present article proposes the improved algorithm for MPPT functionality. The method based on a photo-current estimation of each PV panel. Owing this information, submitted algorithm provides permanent assessment of the upper and the low limits of regulating parameter (a current or a voltage) between which its optimal value that ensures GM is located. Further, conventional MPPT entering the work can easily find the nearest maximum that obviously is GM.Present work describes this new method to find more accurate and fast estimations of the GM boundaries and to keep GM even during fast changings partial shading conditions, which will cause the higher overall efficiency of MPPT.
KW - MPPT
KW - PV solar plant
KW - global maximum
KW - partial shading
KW - permanent monitoring
UR - http://www.scopus.com/inward/record.url?scp=85063153611&partnerID=8YFLogxK
U2 - 10.1109/ICSEE.2018.8646301
DO - 10.1109/ICSEE.2018.8646301
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AN - SCOPUS:85063153611
T3 - 2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018
BT - 2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018
Y2 - 12 December 2018 through 14 December 2018
ER -