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Optimization of One-Power-Point operation for variable speed wind turbine with synchronous generators

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5 Author(s)
Shixiong Fan ; Dept. of Electron. & Electr. Eng., Univ. of Strathclyde, Glasgow, UK ; Fletcher, J.E. ; Huibin Zhang ; Finney, S.J.
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This paper presents an optimized One-Power-Point method for maximum power tracking in a variable speed wind energy conversion system that uses a boost converter. For low-cost implementations, One-Power-Point maximum power tracking is preferable due to its ease of implementation and fast tracking ability. Its drawback is that power coefficient Cp deteriorates during wind speed drops. This means the wind turbine speed cannot track rapid wind speed changes. The rate of rotation speed is determined not only by the system inertia, but also the difference between the mechanical power and electromagnetic power. An optimization method based on One-Power-Point operation is developed to improve the system performance and energy conversion efficiency. There is no additional equipment, mechanical sensors or measurements. Simulation results confirm the functionality and feasibility of the method.

Published in:

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society

Date of Conference:

7-10 Nov. 2010