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Practical deployment of the Brushless Doubly-Fed Machine in a medium scale wind turbine


T. Logan, J. Warrington, S. Shao, R. McMahon

International Conference on Power Electronics and Drive Systems, Taipei, Taiwan, pp. 470-475

The Brushless Doubly-Fed Machine (BDFM) is a brushless electrical generator which allows variable speed operation with a power converter rated at only a fraction of the machine rating. This paper details an example implementation of the BDFM in a medium-scale wind turbine. Details of a simplified design procedure based on electrical and magnetic loadings are given along with the results of tests on the manufactured machine. These show that a BDFM of the scale works as expected but that the 4/8 BDFM chosen was slower and thus larger than the turbine's original induction machine. The implementation of the turbine system is discussed, including the vector-based control scheme that ensures the BDFM operates at a demanded speed and the Maximum Power Point Tracking (MPPT) scheme that selects the rotor speed that extracts the most power from the incident wind conditions.


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% Autogenerated BibTeX entry
@InProceedings { LogEtal:2009:IFA_3754,
    author={T. Logan and J. Warrington and S. Shao and R. McMahon},
    title={{Practical deployment of the Brushless Doubly-Fed Machine in
	  a medium scale wind turbine}},
    booktitle={International Conference on Power Electronics and Drive
    address={Taipei, Taiwan},
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