| 摘要 |
PROBLEM TO BE SOLVED: To obtain a synchronous machine control device that suppresses a current ripple ascribable to deviation of a voltage phase and reduces torque shock.SOLUTION: A synchronous machine control device includes: a speed calculator 4 that calculates an output frequency of an inverter 2 on the basis of a rotor position &thetas;e of a synchronous machine 1; a carrier pattern generator 5 that generates a carrier pattern command on the basis of the output frequency of the inverter 2; and carrier synchronization means 6 for generating a carrier wave on the basis of a voltage command, the output frequency, and the carrier pattern command. The carrier synchronization means 6 includes: a voltage phase calculator 7 that calculates a voltage phase on the basis of the voltage command and the rotor position &thetas;e; a carrier pattern switching permission determiner 8 that determines a carrier pattern on the basis of the carrier pattern command and the voltage phase; a carrier synchronization correction amount calculator 9 that calculates a carrier cycle correction amount on the basis of the carrier pattern and the voltage phase; and a carrier generator 10 that generates a carrier wave on the basis of the carrier pattern, the output frequency, and the carrier cycle correction amount. |
