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Quasi-Zero Torque Pulsation of Surface Permanent Magnet Synchronous Motor for Ship Gyro Stabilizer by Pole/Slot Number and Air-Gap Designs

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작성자포엑스 작성일 22-01-13 20:34

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IEEE TRANSACTIONS ON MAGNETICS, VOL. 50, NO. 2, FEBRUARY 2014


Sun-Kwon Lee1,2, Gyu-Hong Kang1, Jin Hur2, and Byoung-Woo Kim2


This paper deals with the reduction of torque pulsation including torque ripple and cogging torque in surface PM brushless

ac motors. The fractional combination and air-gap shape design by shaping the PM and stator core are studied to reduce torque

pulsation. Torque ripple reduction is achieved by adjusting the magnetic flux density in air-gap contour by cutting magnet outer

shape. Quasi-zero torque pulsation in this paper means the ripple ratio to average torque <0.5%. The magnetic field and torque

characteristics are analyzed by 2-D finite element analysis and prototype to validate is manufactured and measured.


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