Design Optimization of a Traction Synchronous Homopolar Motor

Vladimir Dmitrievskii, Vladimir Prakht, Alecksey Anuchin and Vadim Kazakbaev
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Vladimir Dmitrievskii: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Vladimir Prakht: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Alecksey Anuchin: Department of Electric Drives, Moscow Power Engineering Institute, 111250 Moscow, Russia
Vadim Kazakbaev: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia

Mathematics, 2021, vol. 9, issue 12, 1-12

Abstract: Synchronous homopolar motors (SHMs) have been attracting the attention of researchers for many decades. They are used in a variety of equipment such as aircraft and train generators, welding inverters, and as traction motors. Various mathematical models of SHMs have been proposed to deal with their complicated magnetic circuit. However, mathematical techniques for optimizing SHMs have not yet been proposed. This paper discusses various aspects of the optimal design of traction SHMs, applying the one-criterion unconstrained Nelder–Mead method. The considered motor is intended for use in a mining dump truck with a carrying capacity of 90 tons. The objective function for the SHM optimization was designed to reduce/improve the following main characteristics: total motor power loss, maximum winding current, and torque ripple. One of the difficulties in optimizing SHMs is the three-dimensional structure of their magnetic core, which usually requires the use of a three-dimensional finite element model. However, in this study, an original two-dimensional finite element model of a SHM was used; it allowed the drastic reduction in the computational burden, enabling objective optimization. As a result of optimization, the total losses in the motor decreased by up to 1.16 times and the torque ripple decreased by up to 1.34 times; the maximum armature winding current in the motor mode decreased by 8%.

Keywords: optimal design; Nelder–Mead method; synchronous homopolar machine; synchronous homopolar motor; traction drives; traction motor (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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