Research on the Cogging Torque Optimization of Permanent Magnet Motors for Mining Locomotives
Wang xiaoyong
Zhang jinding
Zhang guoqiang
A zhongyan
Xie weicai
Abstract：With the continuous upgrading of mining equipment,the shortcomings of traditional DC(direct current)motors and AC(alternating current)asynchronous motors have gradually been exposed.In contrast,PMSMs(perma-nent magnet synchronous motors)offer advantages such as stronger power output capabilities,wider speed regula-tion range and lower energy consumption,which have made permanent magnet traction motors an important devel-opment direction for the driving systems of mining transportation equipment,gradually replacing traditional DC mo-tors and AC asynchronous motors.This paper has discussed methods to suppress the cogging torque in PMSMs and analyzes their theoretical basis and calculation process.By establishing a parameterized model of the pole arc coeffi-cient for PMSMs,the cogging torque is reduced by methods such as slot opening size optimization,V-shaped angle of permanent magnets and pole arc coefficient,thereby minimizing torque ripple.Finally,the effectiveness of the proposed scheme is verified through finite element simulation,demonstrating a notable improvement in the efficien-cy of permanent magnet motors for mining electric locomotives,along with a significant reduction in both cogging torque and torque ripple.
Keywords：Mining equipmentPMSM(permanent magnet synchronous motor)Finite element simulationCog-ging torqueTorque ripple
Publication Date：2025-11-30
Online Publishing Date：2025-12-05(First online date of this platform, not the publication date of the document)
Pages：8( 18-25 )