| 摘要 |
PROBLEM TO BE SOLVED: To provide a control apparatus of a motor capable of suppressing discharge from a field coil even when voltage resistance is reduced and suppressing reduction in torque of a motor to the minimum, while voltage resistance of an insulation coat applied to a field coil included in the motor is reduced in accordance with temperature increase of the field coil and reduction in atmospheric pressure in the surrounding of the field coil.SOLUTION: When voltage resistance is reduced and a motor is controlled by a PWM control, a maximum value of voltage applied to a field coil is made to be reduced, thereby, generation of high surge voltage is prevented and generation of discharge is suppressed. |
