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dc.contributorDepartment of Electrical Engineering-
dc.creatorWong, KC-
dc.creatorHo, SL-
dc.creatorCheng, KWE-
dc.publisherPower Electronics Research Centre, The Hong Kong Polytechnic Universityen_US
dc.rightsCopyright © The Hong Kong Polytechnic University 2009.en_US
dc.subjectInduction generatoren_US
dc.subjectVariable speed generationen_US
dc.titleMinimization of current stress on the grid synchronization of doubly-fed induction generators for wind power generationen_US
dc.typeConference Paperen_US
dc.description.otherinformationAuthor name used in this publication: S. L. Hoen_US
dc.description.otherinformationAuthor name used in this publication: K. W. E. Chengen_US
dcterms.abstractDoubly-fed induction generator (DFIG) is the most common type of generators for wind power generation, because of their high energy yield and the possibility of generating power at variable speeds. For most papers in literature, only the synchronization and power generation of DFIGs, but not the transition between them, are discussed. This paper presents a method to control the transition of DFIGs from synchronization to power generation, in order to minimize the peak current during the transition so as to reduce the impact of synchronization on the power system. In this paper the mathematical model of DFIGs for synchronization, transition, and power generation are firstly described. Then the effects of the time difference between the state transition of the controllers and the closing of the stator side contactors and associated current stresses are investigated. A real-time detection method to determine the optimal time for controller state transition is proposed. Simulation and experimental validations confirm that the current stress is greatly reduced if the time difference is minimized using the proposed method.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationPESA 2009 : International Conference on Power Electronic Systems and Applications : 20th-22nd May 2009, p. [1-4]-
dc.relation.ispartofbookPESA 2009 : International Conference on Power Electronic Systems and Applications : 20th-22nd May 2009-
dc.description.oaVersion of Recorden_US
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