Patent Document ID: 9755564
Application ID: 14592357
Patent Flag: 1

Claim One:
1. A controller for a motor generator, comprising: a battery; a step-up converter configured to step up an output voltage from the battery; an inverter configured to convert an output from the step-up converter into an alternating current; a motor generator driven by the alternating current from the inverter; an angle-of-rotation sensor configured to detect an angle of rotation of the motor generator; a learning memory unit configured to store a result of learning of a point of origin of the angle-of-rotation sensor; and a control unit configured to control the inverter in accordance with a target output of the motor generator and a result of detection of the angle-of-rotation sensor to control the alternating current that is to be supplied to the motor generator, and configured to control the step-up converter in accordance with the target output of the motor generator to control the output from the step-up converter, wherein the control unit corrects the angle of rotation of the motor generator in accordance with the result stored in the learning memory unit when learning of the point of origin of the angle-of-rotation sensor has been completed, and wherein, during operation of the motor generator, the control unit sets a voltage output from the step-up converter to be a target value which is determined in accordance with the target output of the motor generator and the corrected angle of rotation of the motor generator when learning of the point of origin of the angle-of-rotation sensor has been completed, and sets the voltage output from the step-up converter to be higher when learning of the point of origin of the angle-of-rotation sensor has yet to be completed, than when learning of the point of origin of the angle-of-rotation sensor has been completed.