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This paper presents magnetic levitation test results of a bearingless motor (BELM) based on d-q axis current control. The BELM based on d-q current control has been proposed by the authors. The stator winding arrangement and the control method have been conducted in detail. The rotational torque and the suspension force can be controlled by only one kind of stator winding. Hence, the winding arrangement...
This paper presents a radial position control method of bearingless motor (BELM) based on d-q axis current control and an integrated winding arrangement. The BELM performs the functions of motor as well as magnetic bearing. Rotor is suspended with non-contact by suspension force. In a conventional BELM, there are two kinds of stator windings such as motor and suspension windings. The motor winding...
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...
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