TY - JOUR
T1 - Novel Fast-Speed Partial-Shading-Tolerant Flexible Power Point Tracking for Photovoltaic Systems with Explicit Key Points Estimation
AU - Zhu, Yinxiao
AU - Wen, Huiqing
AU - Tafti, Hossein Dehghani
AU - Wang, Guangyu
AU - Bu, Qinglei
AU - Chu, Guanying
AU - Shi, Haochen
AU - Hu, Yihua
AU - Jiang, Lin
N1 - Publisher Copyright:
© 2010-2012 IEEE.
PY - 2024/1
Y1 - 2024/1
N2 - Recent power curtailment-based photovoltaic (PV) flexible power point tracking (FPPT) algorithms mainly adopted intricate curve fitting or sophisticated curve-scanning mechanisms to ensure the grid supportive functionalities under partial shading conditions (PSCs), showing the limitations of mathematical solidity or system dynamics improvement. Accordingly, a novel fast-speed partial-shading-tolerant FPPT (PST-FPPT) algorithm is proposed in this article. Regarding the proposed scheme, a modified explicit PV model is developed to express the key operation points with the assistance of several representative current-voltage samples from the initialization process, which is beneficial to computational burden reduction and irradiance sensors removal. Additionally, to guarantee the tracking speed to system dynamics, a set point estimation-based direct voltage regulation strategy is proposed in this article, eliminating the redundant searching in approaching the predefined power command. Simulation and experimental evaluations under various PSCs and operational circumstances validated the effectiveness of the proposed control.
AB - Recent power curtailment-based photovoltaic (PV) flexible power point tracking (FPPT) algorithms mainly adopted intricate curve fitting or sophisticated curve-scanning mechanisms to ensure the grid supportive functionalities under partial shading conditions (PSCs), showing the limitations of mathematical solidity or system dynamics improvement. Accordingly, a novel fast-speed partial-shading-tolerant FPPT (PST-FPPT) algorithm is proposed in this article. Regarding the proposed scheme, a modified explicit PV model is developed to express the key operation points with the assistance of several representative current-voltage samples from the initialization process, which is beneficial to computational burden reduction and irradiance sensors removal. Additionally, to guarantee the tracking speed to system dynamics, a set point estimation-based direct voltage regulation strategy is proposed in this article, eliminating the redundant searching in approaching the predefined power command. Simulation and experimental evaluations under various PSCs and operational circumstances validated the effectiveness of the proposed control.
KW - Complexity theory
KW - Estimation
KW - Flexible power point tracking
KW - grid support
KW - Heuristic algorithms
KW - key
KW - Photovoltaic systems
KW - Power system stability
KW - System dynamics
KW - Voltage control
KW - key points estimation
KW - partial shading
KW - photovoltaic system
UR - http://www.scopus.com/inward/record.url?scp=85168724173&partnerID=8YFLogxK
U2 - 10.1109/TSTE.2023.3303456
DO - 10.1109/TSTE.2023.3303456
M3 - Article
SN - 1949-3029
VL - 15
SP - 466
EP - 485
JO - IEEE Transactions on Sustainable Energy
JF - IEEE Transactions on Sustainable Energy
IS - 1
ER -
