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| Photovoltaic Array Maximum Power Point Tracking Based on Improved Perturbation and Observation Method |
| Liu Bangyin, Duan Shanxu, Liu Fei, Xu Pengwei |
| Huazhong University of Science and Technology Wuhan 430074 China |
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Abstract The conventional perturbation and observation(P&O) method is widely used in the photovoltaic array maximum power point tracking system due to its succinctness and high tracking efficiency. However, the excellent dynamic response and stable performance of the P&O algorithm is difficult to achieve synchronously due to adopting fixed perturbation step size. An improved P&O algorithm with constant-voltage-start and variable step size is proposed in this paper. The contrastive experimental results of the improved and conventional algorithm are presented to demonstrate its effectiveness.
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Received: 20 December 2007
Published: 14 February 2014
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2009, Vol. 24 
