VECTOR CONTROLLER AND MOTOR CONTROLLER USING THE SAME, AIR-CONDITIONER

摘要

The objective of the present invention is to provide a vector controller of a motor control capable of allowing a motor to drive until a output limit torque, a motor controller using the same, and an air conditioner. To fulfill the objective, when the output is in the output voltage saturation state, the vector controller controls an output voltage phase of a weakening magnetic field which defines the output voltage of a power converter, with more than 180 degrees from the main magnetic flux direction of a field magnetic pole of the motor based on the output of the power converter supplying power to drive the motor. Also the vector controller controls the phase of the weakening magnetic field output voltage which defines the output voltage of the power converter on a region where the relationship of the q-axis current and the output torque of the motor becomes non-linear.