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High-Torque Electric Machines: State of the Art and Comparison
Alibeik, Maryam dos Santos, Euzeli C.
Alibeik, Maryam
dos Santos, Euzeli C.
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Journal article
Date
2022-07-30
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Electrical and Computer Engineering
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DOI
https://doi.org/10.3390/machines10080636
Abstract
The state of the art of high-torque electric motors has been reviewed in this paper. This paper presents a literature review of high-torque density electric machines based on their airgap classifications, which brings a unique consideration to new design ideas to increase torque density. Electric machines are classified into three main groups based on their airgap configuration, i.e., (1) machines with a constant airgap, (2) machines with a variable airgap, and (3) machines with an eccentric airgap. This paper also presents the modeling of a high-torque airgap-less electric motor based on the concept of eccentric airgap. The torque density of this motor has been compared to motors available in the literature review. Among electrical motors with no permanent-magnet, airgap-less electric motors take the lead in terms of torque density, which is almost five times greater than the next motor, “in-wheel for electric vehicle”.
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Alibeik, M.; dos Santos, E.C. High-Torque Electric Machines: State of the Art and Comparison. Machines 2022, 10, 636. https://doi.org/10.3390/machines10080636
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Machines, Vol. 10
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