研究目的
The objective of this paper is to develop a variable perturbation P&O MPPT and investigate its effect on the GCPVS. The prede?ned parameters like initial values, step size and sampling time greatly in?uence the performance of a MPPT. The variable perturbation generator must vary the perturbation size in a controlled manner and which may produce less oscillations around the MPP.
研究成果
The paper presents an effective approach to mitigate oscillations in the dc-link voltage and flickering of injected grid current in a grid-connected PV system. The adaptive P&O MPPT, which includes a PI controller for tuning the step size, resolves the issues encountered with fixed step size P&O MPPT. The adaptive P&O MPPT has low influence upon the predefined initial step size and the perturbation interval can be easily adjusted by varying the sampling time of the discrete PI controller.
研究不足
The adaptive P&O MPPT requires careful tuning of the PI controller parameters to ensure optimal performance. The sampling frequency of the MPPT must be chosen lower than the inverter sampling frequency to maintain smoothness in the DC link voltage. Additionally, the method may require higher computational overhead due to the discrete PI controller.
