Investigation of Winding Configurations of Induction Motors to Reduce Spatial Harmonic Orders

Asgharpour-Alamdari, Hossein

doi:10.48301/kssa.2025.502757.3129

Investigation of Winding Configurations of Induction Motors to Reduce Spatial Harmonic Orders

Document Type : Original Article

Author

Hossein Asgharpour-Alamdari

Department of Electrical and Computer Engineering, National University of Skills (NUS), Tehran, Iran

10.48301/kssa.2025.502757.3129

Abstract

The magnetic flux waveform in induction motors and the output voltage waveform in synchronous generators are of particular importance as the most influential factors in the two operating modes of AC electrical machines, which are usually quasi-sinusoidal and have numerous harmonic components. The most important effects of harmonic components include changing the operating point, increasing core losses, increasing noise and vibration, increasing torque ripple, and also reducing the stability of electrical machines. One solution to improve the performance of electrical machines is to reduce or eliminate the amplitude of disturbing harmonics. In this paper, the conventional winding structure in alternating current electrical machines will be examined and the amplitude of harmonics will be evaluated. In order to attenuate or eliminate the disturbing harmonics, a new design based on a four-layer winding scheme, based on a combination of conventional winding designs (one and two layers) and a three-layer winding scheme, has been proposed. In the proposed design, the winding is based on a fractional pitch and using a change in the number of turns and the position of the coils. To verify the proposed design, ANSYS MAXWELL software has been used to measure the magnetic flux, induced voltage, and torque ripple for two three-phase, two poles, 200-watt induction motors. The results obtained from these two motors in the simulation indicate that the motor performance is improved using the proposed design.

Keywords

Induction motor

Four-Layer Winding

Torque

Harmonic component reduction

THD

Winding function

Subjects

power engineering

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