Interior permanent magnet synchronous motor minimum current harmonics torque ripple suppression strategy based on magnetic co‐energy model. Issue 2 (10th January 2020)

• Record Type: Journal Article
• Authors: Yi, Peng; Wang, Xinjian; Sun, Zechang
• Is Part Of: IET electric power applications. Volume 14:Issue 2(2020)
• Page Start: 234
• Page End: 244
• Publication Date: 2020-01-10
• Subjects: finite element analysis -- synchronous motors -- permanent magnet motors -- torque control -- machine control -- electric current control -- harmonics suppression; interior permanent magnet synchronous motor -- magnetic co‐energy model -- permanent magnet synchronous motor torque ripple suppression -- torque ripple equation -- torque equation -- axis currents -- torque–current coupling model -- minimum current harmonics torque ripple suppression strategy -- electric vehicles -- dq‐axis model -- dq‐axis current harmonics -- finite element method; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2019.0276
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : Permanent magnet synchronous motors are widely used in electric vehicles. The permanent magnet synchronous motor torque ripple suppression is a research hotspot at present. This study adopts the torque ripple equation based on magnetic co‐energy. Two novel minimum current harmonics torque ripple suppression strategies based on the magnetic co‐energy are proposed. Both methods are suitable for whole current map calculation. One is based on dq ‐axis model, which makes the dq ‐axis current harmonics fluctuate along gradient direction of the torque equation to dq ‐axis currents. The other one is based on the newly proposed torque–current coupling model. The minimum current harmonics obtained by the two methods are basically the same. At last, finite element method and test bench experiment are used to verify the two methods. Both of them can effectively suppress torque ripple.