Volume 19, Issue 4 (December 2023)                   IJEEE 2023, 19(4): 141-150 | Back to browse issues page

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Mirzahosseini R, Rahimi Namaghi E. Design of a Fractional Slot Concentrated Winding Double-Speed AFPM Motor. IJEEE 2023; 19 (4) :141-150
URL: http://ijeee.iust.ac.ir/article-1-2911-en.html
Design of a Fractional Slot Concentrated Winding Double-Speed AFPM Motor
Reza Mirzahosseini , Elham Rahimi Namaghi
Abstract:   (599 Views)
In this paper, a new topology of fractional slot concentrated winding double rotor axial flux permanent magnet synchronous motor (FSCW-DRAFPMSM) is introduced. The desired structure consists of a nonslotted stator core and two rotor discs. The pole number of the two rotors is different and these two rotors rotate at different speeds in opposite directions. A sample motor with an output power of 200 Watts is designed with the proposed structure. The two rotors of this sample motor rotate with speeds of 1200 and 857 rpm. The Finite Element Method (FEM) is employed to evaluate the performance of the proposed structure. Some performance characteristics of the case study machine, such as the Back EMF, input power, and electromagnetic torques of two rotors are presented to confirm the correctness of the operation of the proposed structure. In addition, the shifting technique is used to improve the Back EMF waveform of the machine. An analytical formula is proposed for calculating the fundamental component of the Back EMF waveform. The accuracy of the formula is approved by FEM.
Keywords: Axial Flux Permanent Magnet (AFPM), Back EMF waveform, Counter-rotating rotors, Fractional slot concentrated winding.
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Type of Study: ICEMG2023 | Subject: Special Electric Machines
Received: 2023/05/28 | Revised: 2024/04/20 | Accepted: 2023/12/27
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
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© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.