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This paper presents the magnetic suspension test results of a bearingless motor/generator for flywheel energy storage systems. A prototype bearingless motor/generator is built on the basis of the computed results by Finite Element Method (FEM). It is an outer rotor-type permanent magnet (PM) synchronous motor/generator and the rotor is wrapped by the flywheel (CFRP). Thus, the motor/generator, the...
This paper presents magnetic suspension characteristics of a bearingless brushless DC motor. The winding distribution, the principle of suspension force generation, and the magnetic suspension control strategy have been proposed by the author. The rotational torque and suspension force have been analyzed by finite element method (FEM) using a machine model. A prototype bearingless brushless DC motor...
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