| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller capable of achieving stable control by suppressing vibration of a rotor and an electric current running due to an induced voltage during motor rotation.SOLUTION: The controller for permanent magnet type synchronous motor includes: a γ-axis current adjuster 20a for adjusting so that a deviation between a γ-axis current command value of a fixed value which is not zero and a γ-axis current detection value becomes zero and calculating a γ-axis voltage command value; a δ-axis current limiting part 21 for outputting a δ-axis voltage compensation value limited to a predetermined value according to a size of a δ-axis current detection value; a coordinate converter 15 for taking the δ-axis voltage compensation value as a δ-axis voltage command value and generating a terminal voltage command value from the δ-axis voltage command value and a γ-axis voltage command value; a PWM circuit 13 for generating a gate signal according to the terminal voltage command value; and a power converter 70 for driving a permanent magnet type synchronous motor 80 by turning on and off a switching element through the gate signal.SELECTED DRAWING: Figure 1 |
