In this paper, a two-phase coreless AFPM machine with wave winding, 2-stators, and 3-rotors for traction applications is studied. A highly general optimization method, employing 3D FEA as the computational engine is employed. Number of poles in addition to other geometrical variables are included as independent optimization variables. A method for extending the speed range by rotating one of the stator discs with respect to the other at constant power operation is proposed. An inverter configuration including Si and wide band gap devices is proposed to be employed in conjunction with the machine under study. The study includes a comparison of the optimally designed coreless machine with a commercial yokeless and segmented armature electric motor.
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The support of National Science Foundation NSF Grant # 1809876, of University of Kentucky, the L. Stanley Pigman endowment and of ANSYS, Inc. is gratefully acknowledged.
Taran, Narges; Rallabandi, Vandana; and Ionel, Dan M., "WAVED: A Coreless Axial Flux PM Motor for Drive Systems with Constant Power Operation" (2019). Power and Energy Institute of Kentucky Faculty Publications. 20.