STUDY OF CURRENT AND ELECTROMOTIVE FORCE WAVEFORMS IN ORDER TO IMPROVE THE PERFORMANCE OF LARGE PM SYNCHRONOUS WIND GENERATOR
The paper presents a comparison between sinusoidal and trapezoidal waveforms in order to reduce the torque ripple and the power to grid fluctuation for large direct-drive PM wind generator. Trapezoidal waveform brings 28% higher power density but also two major drawbacks: necessity to vary the DC bus voltage and requirement for an additional filter on the DC bus.
KeywordsWind Turbine Wind Generator Electromagnetic Torque Torque Ripple Sinusoidal Waveform
Unable to display preview. Download preview PDF.
- M.R. Dubois, “Review of Electromechanical Conversion in Wind Turbines”, Report EPP00.R03, TU Delft, ITS Faculty, The Netherlands, April 2000.Google Scholar
- M.R. Dubois, H. Polinder, J.A. Ferreira, “Comparison of Generator Topologies for Direct-Drive Wind Turbines”, Proceedings of the Nordic Countries Power and Industrial Electronics Conference (NORPIE), Denmark, 2000, p. 22–26.Google Scholar
- J.F. Gieras, M. Wing, Permanent Magnet Motor Technology, 2nd edition, Revised and Expanded Marcel Dekker Inc., New York.Google Scholar
- J.R. Henderson Jr., T.J.E. Miller, Design of Brushless Permanent-Magnet Motors, Oxford: Magna Physics Publishing and Calderon Press, 1994.Google Scholar