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Analysis of cogging torque in brushless machines having nonuniformly distributed stator slots and stepped rotor magnets \ud

By Z.Q. Zhu, S. Ruangsinchaiwanich, D. Ishak and D. Howe


A simple analytical technique is proposed for synthesizing the cogging torque waveform of a permanent magnet brushless machine from the cogging torque waveform that is associated with a single stator slot. The machine may have either uniformly or nonuniformly distributed stator slots and/or a skewed rotor, in which the skew is realized by circumferentially displacing the magnets of each pole. The technique is validated by finite element analysis and measurements

Year: 2005
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