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Appl. Sci. 2013, 3(2), 437-456; doi:10.3390/app3020437
Article

Control of a Stand-Alone Variable Speed Wind Energy Supply System

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Received: 28 December 2012 / Revised: 13 March 2013 / Accepted: 20 March 2013 / Published: 11 April 2013
(This article belongs to the Special Issue Renewable Energy)

Abstract

This paper presents a simple control strategy for the operation of a variable speed stand-alone wind turbine with a permanent magnet synchronous generator (PMSG). The PMSG is connected to a three phase resistive load through a switch mode rectifier and a voltage source inverter. Control of the generator side converter is used to achieve maximum power extraction from the available wind power. Control of the DC-DC bidirectional buck-boost converter, which is connected between batteries bank and DC-link voltage, is used to maintain the DC-link voltage at a constant value. It is also used to make the batteries bank stores the surplus of wind energy and supplies this energy to the load during a wind power shortage. The load side voltage source inverter uses a relatively complex vector control scheme to control the output load voltage in terms of amplitude and frequency. The control strategy works under wind speed variation as well as with variable load. Extensive simulation results have been performed using MATLAB/SIMULINK.
Keywords: stand-alone variable speed wind system; permanent magnet synchronous generator; DC-link voltage; controlled output voltage stand-alone variable speed wind system; permanent magnet synchronous generator; DC-link voltage; controlled output voltage
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Hussein, M.M.; Senjyu, T.; Orabi, M.; Wahab, M.A.A.; Hamada, M.M. Control of a Stand-Alone Variable Speed Wind Energy Supply System. Appl. Sci. 2013, 3, 437-456.

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