作者: Torbjörn Thiringer , Rolf Ottersten , Anders Grauers , Tomas Petru , Wolfgang Hesse
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摘要: The power quality impact of a 20 kW direct-driven variable speed wind turbine equipped with passive blade pitching has been investigated. electrical system the consists 66-pole permanent magnet synchronous generator, diode rectifier and thyristor inverter. causes relatively high flicker in medium range, but small changes dc-link can reduce this. voltage distortion is while harmonic current injection reaches 10 % at rated speed. investigation also shows that pitch allows