Improvement of P&O MPPT Method for Photovoltaic System Based on Adaptive Prediction Algorithm

Abstract:

To utilize maximum solar energy, maximum power point tracking (MPPT) control is much important for PV system. The paper presents a new MPPT method based on adaptive predictive algorithm which is superior to traditional Perturbation and Observation (P&O) method. PV output power is predicted to improve the tracking speed and deduce the possibility of misjudgment of increasing or decreasing the PV output voltage. Because PV output power can be obtained directly, close loop can be established so as to achieve a precise prediction. Simulations and experiments prove that proposed MPPT control can track the maximum power point rapidly, and the system can operate steadily with this MPPT method.

• Periodical: Applied Mechanics and Materials (Volumes 263-266)
• Pages: 2131-2137
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.263-266.2131
• Online since: December 2012
• Authors: Qing Fu, Guang Lei Cheng, Feng Jie Liu, Gui Long Ma
• Keywords: Adaptive Prediction, MPPT, Perturbation and Observe, Photovoltaic (PV)

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