Patent ID: 8288906
Filing Date: 2012-10-16
Classification: F04D,F16C,H02K

Abstract:
1. A maglev motor having a stator configured by a magnetic bearing unit, a motor unit, and a bridge unit, and a rotor provided for the stator, the maglev motor comprising: a donut-shaped rotor being arranged between the magnetic bearing unit and the motor unit; a motor yoke of the motor radially having a plurality of projected poles, a coil being close-wound around the projected pole, and predetermined clearance being made between the inner side of the rotor and the projected pole; the magnetic bearing unit including a plurality of magnetic bearing yokes, each of the magnetic bearing yokes including two projected poles opposite each other near either end portions of the outerside of the rotor being provided circularly at equal intervals of the magnetic bearing unit; a magnetic bearing coil being close-wound around a first one of the two projected poles, and a first permanent magnet being provided for a second projected pole of the two projected poles; predetermined clearance being made on one side of the rotor end portion and the bridge unit for connecting the magnetic bearing unit to the motor unit being provided, a second permanent magnet being provided between the second projected pole provided for each of the magnetic bearing yokes and a bridge yoke of the bridge unit, and a third permanent magnet being provided between the motor yoke and the bridge yoke; and a plurality of motor permanent magnets opposite the motor yoke being provided inside the rotor, and all projected poles provided on the bridge unit side of the magnetic bearing unit being either close-wound by the magnetic bearing coil or provided with the first permanent magnet.