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This paper analyzes the electromagnetic forces acting on the coaxial magnetic gear (CMG). The vibration and noise of CMG result from exciting forces acting on three parts namely low-speed rotor, high-speed rotor and modulating pieces (MPs), respectively. The forces acting on three parts of CMG are calculated. Also, these force frequencies are analyzed. The influence of forces on vibration and noise...
The hybrid excitation magnetic gear having the AC excitation and PM excitation is very useful in transmission system because it can operate with continuously variable gear ratio. But, the harmonic characteristics of flux density in hybrid excitation magnetic gear are different to those of PM excitation magnetic gear. Thus, these magnetic gears are compared in terms of the harmonic characteristics...
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