Internal rotor airgap-less electric motors

Nezamuddin, Omar; Alibeik, Maryam; Bagwe, Rishikesh Mahesh; Rubin, Matthew J.; Santos, Euzeli Cipriano dos

doi:10.1109/ecce.2017.8096847

Cited by 4 publications

(2 citation statements)

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“…These machines are called rolling-rotor electric machines in the literature. The authors have studied an airgap-less electric motor with both an external and an internal rotor in [95,96] which will be explained later in this manuscript. Another example of rolling-rotor machines is a rolling-rotor switched-reluctance motor that has been modeled and simulated in [93].…”

Section: Machines With Eccentric Airgapsmentioning

confidence: 99%

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High-Torque Electric Machines: State of the Art and Comparison

Alibeik

Santos

2022

Machines

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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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Section: Machines With Eccentric Airgapsmentioning

confidence: 99%

“…In other words, the rotor is attracted to the stator at the points of excitation. The pole excitation of the airgap-less electric motor has been discussed by the authors in detail in [95][96][97][98]. It is worth mentioning that the bipole excitation mode has been used in this motor.…”

Section: Comparison Of Airgap-less Electric Motors With a Switched-re...mentioning

confidence: 99%