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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Torque ripple analysis and reduction for wind energy conversion systems using uncontrolled rectifier and boost converter
IET Renewable Power Generation, Volume 5, No. 5, Year 2011
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Description
A conventional topology for a small-scale wind energy conversion system consists of a permanent magnet synchronous generator, a diode bridge rectifier, a boost converter and a grid-side inverter. Since generator phase currents contain low-order harmonics and cannot be controlled independently using a diode bridge rectifier, electromagnetic torque ripple is relatively large and may have a detrimental effect on the life of the turbine through fatigue induced by shaft torque ripple. This study investigates methods to reduce this electromagnetic torque ripple, from both the viewpoints of the circuit topology and the control strategy. The effect of the DC-side capacitor on torque ripple is investigated and different control strategies and their effect on torque ripple are compared and analysed. This shows that the torque ripple can be reduced by removing the DC-side capacitor and can be further reduced by controlling DC-side current to a constant value. These methods have been investigated theoretically and the validity of the results confirmed by both simulation and experiment. © 2011 The Institution of Engineering and Technology.
Authors & Co-Authors
Xia, Yuanye
United Kingdom, Glasgow
University of Strathclyde
Fletcher, John Edward
United Kingdom, Glasgow
University of Strathclyde
Finney, Stephen Jon
United Kingdom, Glasgow
University of Strathclyde
Ahmed, Khaled H.
United Kingdom, Glasgow
University of Strathclyde
Williams, Barry W.
United Kingdom, Glasgow
University of Strathclyde
Statistics
Citations: 61
Authors: 5
Affiliations: 1
Identifiers
Doi:
10.1049/iet-rpg.2010.0108
ISSN:
17521424
Study Approach
Quantitative