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This paper proposes a magnetic circuit model (MCM) for the design of a brushless doubly-fed machine (BDFM). The BDFM possesses advantages in terms of high reliability and reduced gearbox stages, and it requires a fractionally-rated power converter. This makes it suitable for utilization in offshore wind turbines. It is difficult for conventional design methods to calculate the flux in the stator because...
A 3D magnetic equivalent circuit model is developed to predict the total excitation flux of an homopolar hybrid excitation synchronous machines. It is established using the main flux path and a part of the magnets leakage flux's path. This model takes into account the lamination effect and ferromagnetic parts reluctances. Results from the model are compared with finite-element predictions and the...
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