A method for reducing cogging torque by magnet shifting in permanent magnet machines

  title={A method for reducing cogging torque by magnet shifting in permanent magnet machines},
  author={Ting Liu and Shoudao Huang and Jian Gao},
  journal={2010 International Conference on Electrical Machines and Systems},
Cogging torque is one of the important issues for permanent magnet machines. Due to the interaction between the permanent magnets and slotted armature lamination, there exists cogging torque in slotted permanent magnet machines, which may cause noise and vibration. To reduce the cogging torque, the expression of the cogging torque was studied based on the Fourier analysis in this paper. Based on the analytical expression of cogging torque, a method of permanent magnet (PM) shifting to reduce… CONTINUE READING

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