A discussion about a start-up procedure of a doubly-fed induction generator system

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Da Silva, J. L.
dc.contributor.author Oliveira, R. G. de
dc.contributor.author Silva, S. R.
dc.contributor.author Rabelo, B.
dc.contributor.author Hofmann, W.
dc.date.accessioned 2011-11-23T12:59:25Z
dc.date.available 2011-11-23T12:59:25Z
dc.date.issued 2008
dc.identifier.isbn 978-951-22-9708-5
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/821
dc.description.abstract The present work proposes a start-up procedure for a doubly-fed induction generator (DFIG) driven by a wind turbine. In the DFIG topology the stator is connected direct to the grid while the rotor is connected to a back-to-back converter. This structure requires some care during grid synchronization to avoid undesired overloads. The main goal of a start-up procedure is to reduce the stresses on the electrical and mechanical components during synchronization. In this work, it is achieved by equalization among the induced stator voltage, the voltage over the filter capacitor and the grid voltage. A phase-locked-loop (PLL) computes the grid voltage phase displacement required for the system control orientation and synchronization procedures. Previous to the starting-up, the output currents set-points of the grid-side converter and rotor-side converter are computed in order to produce the same grid voltage over the filter capacitors and on the stator terminals. The whole procedure is summarized in seven different steps: turbine acceleration by the pitch control, DC-link pre-charge; initialization of the filter current controllers; filter synchronization; DC-Link voltage adjust; rotor current controllers' initialization and stator synchronization. The proposed start-up procedure was tested in a 4 kW test bench and the description of each step as well as simulation and experimental results are presented throughout the paper. en
dc.format.extent 6
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartof Nordic Workshop on Power and Industrial Electronics (NORPIE/2008), June 9-11, 2008, Espoo, Finland en
dc.relation.ispartofseries Proceedings of the Nordic Workshop on Power and Industrial Electronics (NORPIE/2008) en
dc.subject.other Electrical engineering en
dc.subject.other Energy en
dc.title A discussion about a start-up procedure of a doubly-fed induction generator system en
dc.type A4 Artikkeli konferenssijulkaisussa fi
dc.description.version reviewed en
dc.subject.keyword wind power generation en
dc.subject.keyword doubly-fed induction generator en
dc.subject.keyword synchronization en
dc.subject.keyword grid utility en
dc.identifier.urn urn:nbn:fi:tkk-011722
dc.type.dcmitype text en


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