Authors

Bing Wang, Qiuxuan Wu, Min Tian, Qingyi Hu

Abstract

To support doubly fed wind turbine (DFWT) groups in offshore wind farms, this paper proposes a distributed coordinated control based on the Hamiltonian energy theory. This strategy provides global stability to closed-loop systems and facilitates output synchronization. First, a model of a DFWT is realized as a port-controlled Hamiltonian system with dissipation (PCH-D), and the single-machine model is expanded into a multi-machine model of a wind turbine group. Then, by using the design methodology of distributed Hamiltonian systems, a distributed coordinated control is presented for a multi-machine PCH-D system. Furthermore, to investigate failures in wind turbine groups, they are divided into two cases: the separation of failed machines from the system, and the grid-connected operation of failed machines after a fault. These cases correspond to undirected and directed graphs, respectively. Finally, simulations prove that distributed coordinated control enhances the reliability and autonomy of wind turbine groups in offshore wind farms.

Citation

  • Journal: Sustainability
  • Year: 2017
  • Volume: 9
  • Issue: 8
  • Pages: 1448
  • Publisher: MDPI AG
  • DOI: 10.3390/su9081448

BibTeX

@article{Wang_2017,
  title={{Distributed Coordinated Control of Offshore Doubly Fed Wind Turbine Groups Based on the Hamiltonian Energy Method}},
  volume={9},
  ISSN={2071-1050},
  DOI={10.3390/su9081448},
  number={8},
  journal={Sustainability},
  publisher={MDPI AG},
  author={Wang, Bing and Wu, Qiuxuan and Tian, Min and Hu, Qingyi},
  year={2017},
  pages={1448}
}

Download the bib file

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