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HYBRID EXCITED VERNIER MACHINES WITH ALL EXCITATION SOURCES ON THE STATOR FOR ELECTRIC VEHICLES

By L. Xu, G. Liu, W. Zhao, and J. Ji

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Abstract:
In this paper, two new hybrid excited vernier machines with surface and interior V-shaped PM arrays are proposed. By integrating the vernier structure and field excitation windings together, the proposed machines not only retain the merit of high torque of permanent magnet vernier, but also offer flexible flux adjustment to enable a wide speed range with the introduction of field windings. Different from existing hybrid excited vernier machines having magnets on the rotor, the proposed machines is designed with all excitation sources on the stator. Therefore, temperature rise of magnets of the proposed machines is much easier to control, which in turn reduce the risk of irreversible demagnetization of magnets and enhance the reliability. The electromagnetic performances of the two proposed machines are comprehensively analyzed and quantitatively compared by using the time-stepping finite-element method, verifying the theoretical analysis.

Citation:
L. Xu, G. Liu, W. Zhao, and J. Ji, "Hybrid Excited Vernier Machines with All Excitation Sources on the Stator for Electric Vehicles," Progress In Electromagnetics Research M, Vol. 46, 113-123, 2016.
doi:10.2528/PIERM15120305

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