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Energies 2016, 9(12), 986; doi:10.3390/en9120986

Global Maximum Power Point Tracking (MPPT) of a Photovoltaic Module Array Constructed through Improved Teaching-Learning-Based Optimization

Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
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Academic Editors: Senthilarasu Sundaram and Tapas Mallick
Received: 10 September 2016 / Revised: 10 November 2016 / Accepted: 15 November 2016 / Published: 25 November 2016
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Abstract

The present study proposes a maximum power point tracking (MPPT) method in which improved teaching-learning-based optimization (I-TLBO) is applied to perform global MPPT of photovoltaic (PV) module arrays under dissimilar shading situations to ensure the maximum power output of the module arrays. The proposed I-TLBO enables the automatic adjustment of teaching factors according to the self-learning ability of students. Incorporating smart-tracking and self-study strategies can effectively improve the tracking response speed and steady-state tracking performance. To evaluate the feasibility of the proposed I-TLBO, a HIP-2717 PV module array from Sanyo Electric was employed to compose various arrays with different serial and parallel configurations. The arrays were operated under different shading conditions to test the MPPT with double, triple, or quadruple peaks of power-voltage characteristic curves. Boost converters were employed with TMS320F2808 digital signal processors to test the proposed MPPT method. Empirical results confirm that the proposed method exhibits more favorable dynamic and static-state response tracking performance compared with that of conventional TLBO. View Full-Text
Keywords: maximum power point tracking; teaching-learning-based optimization; photovoltaic module array; partial module shading maximum power point tracking; teaching-learning-based optimization; photovoltaic module array; partial module shading
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Chao, K.-H.; Wu, M.-C. Global Maximum Power Point Tracking (MPPT) of a Photovoltaic Module Array Constructed through Improved Teaching-Learning-Based Optimization. Energies 2016, 9, 986.

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