| 摘要 |
PROBLEM TO BE SOLVED: To provide a control method of permanent magnet synchronous motor, in which variation in the battery voltage can be reflected in real time, a voltage utilization factor of a motor/inverter system is improved and a fuel consumption of vehicle is improved.SOLUTION: The control method of permanent magnet synchronous motor includes steps of detecting an absolute angular position of a permanent magnet synchronous motor, calculating a rotational speed of the permanent magnet synchronous motor, detecting a voltage of a battery, calculating a compensation speed in which battery voltage variation compensation is reflected, generating a d-axis-current command and a q-axis-current command corresponding to the torque command and the compensation speed, converting three-phase currents flowing in the permanent magnet synchronous motor into a d-axis feedback current and a q-axis feedback current, calculating a d-axis-voltage command and a q-axis-voltage command, converting the d-axis-voltage command and the q-axis-voltage command into a three-phase voltage command, and controlling the drive of the permanent magnet synchronous motor. |
