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Abstract <p>A mathematical model is proposed that describes the effect of the higher harmonics of the current consumed by a permanent magnet-powered synchronous motor on the efficiency. The approach is based on the determination of the mechanical power developed by the motor through the difference in mechanical power developed during the flow of the main and higher harmonics of the supply current. These components of mechanical power are numerically estimated for motor samples using an analysis of their characteristics presented in the manufacturer’s catalog. The ways for enhancing the efficiency of the considered motor designs are substantiated, the main of which is to maintain the sinusoidal nature of the supply current, a conclusion which is consistent with the common practice.</p>

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Effect of Nonsinusoidality of Consumed Current on the Efficiency of Synchronous Motors with Excitation by Permanent Magnets of the Rotor

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • D. A. Vyrykhanov

摘要

Abstract

A mathematical model is proposed that describes the effect of the higher harmonics of the current consumed by a permanent magnet-powered synchronous motor on the efficiency. The approach is based on the determination of the mechanical power developed by the motor through the difference in mechanical power developed during the flow of the main and higher harmonics of the supply current. These components of mechanical power are numerically estimated for motor samples using an analysis of their characteristics presented in the manufacturer’s catalog. The ways for enhancing the efficiency of the considered motor designs are substantiated, the main of which is to maintain the sinusoidal nature of the supply current, a conclusion which is consistent with the common practice.