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Since air-gap magnetic fields of brushless doubly-fed machine (BDFM) are produced by two stator windings of different pole pairs, the spatial harmonic contents of the BDFM are higher than conventional induction machines and have a considerable effect on the machine performance. To reduce the contents of main slot harmonics, the harmonic components of airgap magnetic field for the BDFM are analyzed...
To quickly and accurately calculate steady-state performance of wound-rotor BDFM, this paper presents an electromagnetic calculation method. A 100 kW wound-rotor BDFM is used as an example to verify the quickness and accuracy of the analytical method by the comparison of the calculation data, two-dimensional (2D) FEM simulation results and experimental data.
In this paper, a novel brushless doubly-fed machine (BDFM) with the double-sine wound rotor (DSW rotor) for stand-alone ship shaft generator application is designed. The performance studies of the prototype DSW-rotor BDFM with 4 and 2 pole pairs by using the finite element analysis model and the experimental method are presented. The magnetic fields, air-grip flux destiny distribution and the on-load...
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