Decentralized control of a nine-phase permanent magnet generator for offshore wind turbines
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This paper presents a decentralized current control approach for a nine-phase wind turbine generator. This type of generator has three different three-phase stators sharing the same machine yoke and connected to the grid by means of three different voltage source back-to-back power converters. Due to the machine configuration, magnetic couplings are present between the three stators, complicating the design and implementation of the machine current controllers. Rather than a centralized control approach, this paper proposes a methodology to design a decentralized machine control to regulate the active and reactive power flowing through each stator independently. A complete dynamic analysis is performed in order to design the controller to reduce the coupling effects within the machine, while ensuring a proper dynamic performance. The control strategy is validated through simulation and experimental results.
2nd Place, Best paper award de la revista "IEEE transactions on energy conversion" atorgat per la IEEE Power and Energy Society
CitationPrieto, E., Junyent-Ferré, A., Lavemia, D., Gomis-Bellmunt, O. Decentralized control of a nine-phase permanent magnet generator for offshore wind turbines. "IEEE transactions on energy conversion", 01 Setembre 2015, vol. 30, núm. 3, p. 1103-1112.