| 摘要 |
PROBLEM TO BE SOLVED: To support a rotor without using a bearing in a permanent magnet synchronous machine.SOLUTION: A motor 4 comprises: a stator 21; a rotor 23; and a position sensor 5 which detects a position of a rotational axis of the rotor 23 with respect to a predetermined reference position. A controller 3: receives a supply of a torque current command value representing magnitude of a torque current to generate a torque for rotating the rotor 23; generates a support current command value representing the magnitude of a support current which generate force to support the rotational axis of the rotor 23 at the reference position on the basis of a distance between the reference position and the position of the rotational axis of the rotor 23; controls a power conversion device 1 in a manner that applies a current, which is a sum of the torque current and the support current, to a first coil group; controls another power conversion device 2 in a manner that applies a current, which is a balance that deducts the support current from the torque current, to a second coil group; and concurrently rotates and supports the rotor 23 with magnet fields generated by the first and the second coil groups. |
