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:
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 mecha-nisms to ensure the grid supportive functionalities under partial shading conditions (PSCs), showing the limitations of mathe-matical solidity or system dynamics improvement. Accordingly, a novel fast-speed partial-shading-tolerant FPPT (PST-FPPT) algorithm is proposed in this paper. 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 paper, eliminating the redundant searching in approaching the predefined power com-mand. 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 mecha-nisms to ensure the grid supportive functionalities under partial shading conditions (PSCs), showing the limitations of mathe-matical solidity or system dynamics improvement. Accordingly, a novel fast-speed partial-shading-tolerant FPPT (PST-FPPT) algorithm is proposed in this paper. 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 paper, eliminating the redundant searching in approaching the predefined power com-mand. 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
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 - 1
EP - 20
JO - IEEE Transactions on Sustainable Energy
JF - IEEE Transactions on Sustainable Energy
IS - 1
ER -
