Research on global MPPT under partial shadow conditions

YiWei Zhang; Ye Du

doi:10.1117/12.2628430

16 February 2022 Research on global MPPT under partial shadow conditions

YiWei Zhang, Ye Du

Proceedings Volume 12164, International Conference on Optoelectronic Materials and Devices (ICOMD 2021); 121640O (2022) https://doi.org/10.1117/12.2628430
Event: 2021 International Conference on Optoelectronic Materials and Devices, 2021, Guangzhou, China

Abstract

Under partial shadow conditions, the use of traditional MPPT method will cause multiple peaks on the voltage power curve of the photovoltaic array, reduce the photovoltaic power generation efficiency, and cause a waste of photovoltaic energy. In view of the shortcomings of the traditional photovoltaic MPPT method under partial shadow conditions, this paper uses a power closed-loop control strategy to scan the global maximum power point of the power-voltage curve.Aiming at the disadvantage that the traditional disturbance observation method is easy to fall into unidirectional back-and-forth oscillation, a disturbance observation method with variable step length and anti-misjudgment function is proposed by changing the duty cycle, and the simulation is carried out through SIMULINK to prove the correctness of the method proposed in this paper.

Citation Download Citation

YiWei Zhang and Ye Du "Research on global MPPT under partial shadow conditions", Proc. SPIE 12164, International Conference on Optoelectronic Materials and Devices (ICOMD 2021), 121640O (16 February 2022); https://doi.org/10.1117/12.2628430

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