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Control and fault handling in a modular series-connected converter for a transformerless 100 kv low-weight offshore wind turbine

Control and fault handling in a modular series-connected converter for a transformerless 100 kv low-weight offshore wind turbine

Kategori
Vitenskapelig artikkel
Sammendrag
A transformerless wind power generator concept with the potential to achieve 100 kV dc output is proposed in this paper. In this paper, the modular ac/dc converter system suitable for such a high-voltage generator is analyzed for normal operation and fault-tolerant modes. The control synthesis is addressed, based on an assumption that the control can be designed modularly. Additionally, the investigated control system can facilitate fault-tolerant operation without changing the main structure. The robustness of the module control system is analyzed, and the limits for fault-tolerant operation are investigated. The theoretical studies are supported by transient analysis through simulations of the turbine in EMTDC/PSCAD. Finally, the generator/converter solution is verified experimentally. The laboratory results were obtained using a 45 kW prototype with three generator segments and three converter units in series.© Copyright 2014 IEEE - All rights reserved
Oppdragsgiver
  • Research Council of Norway (RCN) / 190948
  • Research Council of Norway (RCN) / 193823
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • Norges teknisk-naturvitenskapelige universitet
  • SINTEF Energi AS / Energisystemer
År
Publisert i
IEEE transactions on industry applications
ISSN
0093-9994
Årgang
50
Hefte nr.
2
Side(r)
1094 - 1105