Please use this identifier to cite or link to this item: https://doi.org/10.1049/ip-epa:19941079
Title: Analysis and control of torque ripples in inverter-fed permanent-magnet synchronous motors using the electromechanical spring-stiffness coefficient ∂Te/∂θ
Authors: Low, T.S. 
Ding, Y.P.
Lock, K.S. 
Issue Date: May-1994
Source: Low, T.S., Ding, Y.P., Lock, K.S. (1994-05). Analysis and control of torque ripples in inverter-fed permanent-magnet synchronous motors using the electromechanical spring-stiffness coefficient ∂Te/∂θ. IEE Proceedings: Electric Power Applications 141 (3) : 169-176. ScholarBank@NUS Repository. https://doi.org/10.1049/ip-epa:19941079
Abstract: The application of the static electro-mechanical-spring-stiffness coefficient ∂Te/∂θ to the analysis of torque ripple is presented. Torque ripples of inverter-fed permanent-magnet synchronous motors with uniform and nonuniform airgaps are analysed. It is shown that the quadrature current not only contributes to the electromagnetic torque but also affects the torque ripple in the nonuniform-airgap permanent-magnet synchronous motor (PMSM). Controlling the currents id and iq in the manner proposed in the paper, based on the analysis, will result in torques with low ripple content for PMSMs with both uniform and nonuniform airgaps.
Source Title: IEE Proceedings: Electric Power Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/80292
ISSN: 13502352
DOI: 10.1049/ip-epa:19941079
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