| 摘要 |
PROBLEM TO BE SOLVED: To provide a vector controller for motor control which can be driven up to a limit torque capable of being outputted by a motor, and also to provide a motor controller using the same and an air conditioner.SOLUTION: Based on output of a power converter which supplies power to and drives a motor, a weak field output voltage phase specifying an output voltage of the power converter is controlled at 180 degrees or more with respect to the main magnetic flux direction of a motor filed magnetic pole when the output is in an output voltage saturation state. Moreover, in an area where the relation between an output torque of the motor and a q-axis current is set in a nonlinear shape, the phase of the weak field output voltage is controlled which specifies the output voltage of the power converter. |
