TY - GEN
T1 - Analysis and Suppression of Electromagnetic Ripple Torque of Surface-Mounted Permanent Magnet Synchronous Motor with Similar Number of Poles and Slots
AU - Liu, Xiangdong
AU - He, Yuan
AU - Mou, Quansong
AU - Zhao, Jing
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - In order to improve the positioning accuracy and stability of the servo system, the torque ripple of permanent magnet synchronous motor (PMSM) is analyzed. As the cogging torque and the reluctance torque of surface-mounted PMSM with similar number of poles and slots are small, the electromagnetic (EM) ripple torque caused by the interaction effect between back electromagnetic force (EMF) harmonics and armature current harmonics is the main component of the torque fluctuation. Firstly, the generation cause and the characteristics of EM ripple torque are analyzed and the 6th, 12th, 18th harmonics are the main components of the EM ripple torque. Then the rotor step skewing method and harmonic current compensation method are investigated and analyzed to reduce the EM ripple torque. Finally, the effectiveness of the two optimization methods are validated by finite element method (FEM) and prototype experiments.
AB - In order to improve the positioning accuracy and stability of the servo system, the torque ripple of permanent magnet synchronous motor (PMSM) is analyzed. As the cogging torque and the reluctance torque of surface-mounted PMSM with similar number of poles and slots are small, the electromagnetic (EM) ripple torque caused by the interaction effect between back electromagnetic force (EMF) harmonics and armature current harmonics is the main component of the torque fluctuation. Firstly, the generation cause and the characteristics of EM ripple torque are analyzed and the 6th, 12th, 18th harmonics are the main components of the EM ripple torque. Then the rotor step skewing method and harmonic current compensation method are investigated and analyzed to reduce the EM ripple torque. Finally, the effectiveness of the two optimization methods are validated by finite element method (FEM) and prototype experiments.
KW - Surface-mounted PMSM
KW - electromagnetic ripple torque
KW - harmonic current compensation
KW - rotor step skewing
UR - http://www.scopus.com/inward/record.url?scp=85077117574&partnerID=8YFLogxK
U2 - 10.1109/ICEMS.2019.8922539
DO - 10.1109/ICEMS.2019.8922539
M3 - Conference contribution
AN - SCOPUS:85077117574
T3 - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
BT - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
Y2 - 11 August 2019 through 14 August 2019
ER -