| 摘要 |
PROBLEM TO BE SOLVED: To provide a synchronous machine control device capable of highly accurately estimating a temperature or magnetic flux of a permanent magnet and driving a synchronous machine without directly installing a temperature detector on a permanent magnet which forms a field.SOLUTION: A synchronous machine control device comprises: a position identification unit 21 which estimates or detects a rotor position of a synchronous machine 3; a current detection unit 22 which detects armature current; a current command generation unit 23 which generates a first and a second current command; a voltage command generation unit 24 which generates a voltage command on the basis of the current commands, the rotor position, and the armature current; a power conversion unit 25 which outputs voltage to the synchronous machine on the basis of the voltage command; a magnetic flux estimation unit 26 which estimates an armature interlinkage magnetic flux on the basis of a rotational speed calculated from change in the rotor position, the voltage command, and the armature current; and a magnet state estimation unit 27 which estimates a magnetic flux or temperature of a permanent magnet from the rotor position, the armature current, and the armature interlinkage magnetic flux. |
