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Energies 2012, 5(7), 2331-2350;

Energy Storage System with Voltage Equalization Strategy for Wind Energy Conversion

Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
Received: 21 March 2012 / Revised: 29 May 2012 / Accepted: 26 June 2012 / Published: 9 July 2012
(This article belongs to the Special Issue Wind Turbines)
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In this paper, an energy storage system with voltage equalization strategy for wind energy conversion is presented. The proposed energy storage system provides a voltage equalization strategy for series-connected lead-acid batteries to increase their total storage capacity and lifecycle. In order to draw the maximum power from the wind energy, a perturbation-and-observation method and digital signal processor (DSP) are incorporated to implement maximum power point tracking (MPPT) algorithm and power regulating scheme. In the proposed energy storage system, all power switches have zero-voltage-switching (ZVS) feature at turn-on transition. Therefore, the conversion efficiency can be increased. Finally, a prototype energy storage system for wind energy conversion is built and implemented. Experimental results have verified the performance and feasibility of the proposed energy storage system for wind energy conversion. View Full-Text
Keywords: series-connected; perturbation-and-observation; zero-voltage-switching (ZVS) series-connected; perturbation-and-observation; zero-voltage-switching (ZVS)

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Tsai, C.-T. Energy Storage System with Voltage Equalization Strategy for Wind Energy Conversion. Energies 2012, 5, 2331-2350.

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