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This research investigates the characteristics of cogging torque in brushless DC motors due to the interaction between the uneven magnetization of a permanent magnet and the shape of the teeth. The excitation frequencies of the cogging torque are the harmonics of the least common multiple of the poles and slots in ideal brushless DC motors. However, this research numerically and experimentally illustrates...
This research investigates the characteristics of the cogging torque in brushless DC motors due to the interaction between unevenly magnetized permanent magnet (PM) and teeth shape. The excitation frequencies of cogging torque are the harmonics of the least common multiple of the poles and slots in the brush less DC motors with the ideally magnetized PM. However, uneven magnetization of PM additionally...
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