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Keywords = axial flux induction motor (AFIM)

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15 pages, 4293 KB  
Article
Analytical Model for the Design of Axial Flux Induction Motors with Maximum Torque Density
by Georgii Baranov, Alexander Zolotarev, Valerii Ostrovskii, Timur Karimov and Alexander Voznesensky
World Electr. Veh. J. 2021, 12(1), 24; https://doi.org/10.3390/wevj12010024 - 11 Feb 2021
Cited by 16 | Viewed by 6493
Abstract
This article proposes a mathematical model of an axial flux induction motor (AFIM) with one stator and one rotor. The model is based on the expression for the electromagnetic torque, which presents a function of two independent variables: the axial length of the [...] Read more.
This article proposes a mathematical model of an axial flux induction motor (AFIM) with one stator and one rotor. The model is based on the expression for the electromagnetic torque, which presents a function of two independent variables: the axial length of the stator core and the flux density in the air gap. This allows calculating the main dimensions of the motor with the highest possible torque density. Thus, developed model is suitable for designing the motor of specified volume with maximum torque, and solving the inverse problem of minimizing the machine volume with the specified torque. The detailed output of the model and the results of the calculations for the low-power engine powered by voltage of 7.35 V (RMS) are given. The results are validated using FEM in ANSYS software: with the outer motor diameter of 0.11 m, the flux density in it reaches 1.2 T. Full article
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15 pages, 4858 KB  
Article
Performance Analysis of Axial-Flux Induction Motor with Skewed Rotor
by Fatma Keskin Arabul, Ibrahim Senol and Yasemin Oner
Energies 2020, 13(19), 4991; https://doi.org/10.3390/en13194991 - 23 Sep 2020
Cited by 23 | Viewed by 10011
Abstract
In recent years, with developing technology in the field of electrical machines, more efficient and high power density electric motors have been produced. The use of high energy efficiency motors gains importance due to the increase in global energy demand. The main purpose [...] Read more.
In recent years, with developing technology in the field of electrical machines, more efficient and high power density electric motors have been produced. The use of high energy efficiency motors gains importance due to the increase in global energy demand. The main purpose of this study was to design an Axial Flux Induction Motor (AFIM) with the same efficiency class as the Radial Flux Induction Motor (RFIM) in premium efficiency (IE3) class which is used commonly in industrial applications. Various AFIMs are designed with different rotor slot numbers and performance analyses as efficiency and torque ripple changes are investigated. It is known that torque ripple is one of the key parameters in electrical machine design which should be kept as low as possible without decreasing efficiency and torque. Accordingly, AFIMs’ rotor slots are skewed considering the stator and rotor slot numbers. The use of a Soft Magnetic Composites (SMC) material in design is also investigated. As a result of the analyses, many premium efficiency classes for AFIMs are obtained. In addition, using SMC material and skewing the rotor slots provides that torque ripples be reduced. Full article
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