Grid fault performance of brushless doubly-fed reluctance machines in wind turbine applications

Publication Type:
Conference Proceeding
2018 20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe, 2018
Issue Date:
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© 2018 EPE Association. The DFIG and the BDFRM have very similar dynamic equations, however the BDFRM's complex flux coupling produces machine parameters very different to the DFIG. These parameter differences result in different intrinsic machine behaviour under fault conditions. This paper develops and uses a simple model to explain the fault performance differences between the machines, and then verifies these predictions using a combination of simulation and experimental results. The general conclusion is that the intrinsic large leakage inductances of the BDFRM assist with protecting the rotor side converter during grid side fault conditions.
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