Electromagnetic rotating machine

摘要

An electromagnetic rotating machine having drive windings and position control windings and components enabling operation generally in accordance with the following. The controller 82 estimates displacement of the rotor 50 by computing from the currents 1u2, 1v2 and 1w2 of the position control windings C2, the primary current frequency command value 2 omega , and the output current (or voltage) from the inverter 56. On the basis of the estimated rotor displacement, the modulator 84, two-phase/three-phase converter 86 and voltage control inverter 88 control the currents of the windings C2. This unbalances the magnetic field generated by the motor windings C4, so that radial magnetic force acts on the rotor 50 to control the rotor position.