| 摘要 |
PROBLEM TO BE SOLVED: To control voltage instability caused by a delayed magnetic flux change of a motor during acceleration/deceleration in a constant power range, by supplying field current for a target rotational speed from the time of control start, thereby conducting acceleration/deceleration control. SOLUTION: When rotational speed is increased from '0' to target rotational speed Nm, field current I dm for target rotational speed Nm is supplied to a motor from the time of control start of rotational speed of '0', and controlled at constant conditions. When the rotational speed is increased from N1 to the target rotational speed Nm in a constant power range, the field current I dm for the target engine speed Nm is supplied to the motor from the time of control start, and controlled at constant conditions. It is thus possible to control voltage instability caused by a delayed magnetic flux change of the motor during acceleration/deceleration in the power constant area. |
