This paper focuses on a new structure of permanent magnet machines suitable for highly integrated in-wheel motors for vehicle application. In particular, the main feature of the integrated solution lays in the removal of a sector of the stator in order to have the required space for the brake caliper. However, the sectored-stator introduces an additional anisotropy in the electromagnetic circuit affecting the overall torque ripple of the machine. As a consequence, a general FEM-based analysis of sectored-stator PM machines has been undertaken to evaluate the important behaviors, such as output torque, cogging torque, torque ripple, back electromotive force, and unbalanced magnetic force. Furthermore, the effect of a considered winding arrangement has been evaluated using the winding function theory, obtaining interesting results related to the magneto-motive force distributions when a missing sector is present.
Analysis of PM machines with sectored-stator / AHMADI DARMANI, Mostafa; Bramerdorfer, G.; Vaschetto, S.; Cavagnino, A.; Carabelli, S.. - ELETTRONICO. - (2019), pp. 745-750. (Intervento presentato al convegno 11th IEEE International Electric Machines and Drives Conference, IEMDC 2019 tenutosi a San Diego, CA, USA nel 2019) [10.1109/IEMDC.2019.8785205].
Analysis of PM machines with sectored-stator
AHMADI DARMANI, MOSTAFA;Vaschetto S.;Cavagnino A.;Carabelli S.
2019
Abstract
This paper focuses on a new structure of permanent magnet machines suitable for highly integrated in-wheel motors for vehicle application. In particular, the main feature of the integrated solution lays in the removal of a sector of the stator in order to have the required space for the brake caliper. However, the sectored-stator introduces an additional anisotropy in the electromagnetic circuit affecting the overall torque ripple of the machine. As a consequence, a general FEM-based analysis of sectored-stator PM machines has been undertaken to evaluate the important behaviors, such as output torque, cogging torque, torque ripple, back electromotive force, and unbalanced magnetic force. Furthermore, the effect of a considered winding arrangement has been evaluated using the winding function theory, obtaining interesting results related to the magneto-motive force distributions when a missing sector is present.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2757732
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