Patent ID: 8040093
Filing Date: 2011-10-18
Classification: B60K,B60L,H02P,Y02T

Abstract:
1. A motor controller for an axial-gap motor equipped with a rotor, and a first stator and a second stator which are provided such that they oppose each other with the rotor interposed therebetween in the rotational axial direction of the rotor and which have coils for plurality of phases, the motor controller comprising: a first inverter connected to the first stator; a second inverter connected to the second stator; and a voltage conversion controller which inputs a first DC voltage to the first inverter to supply a field axis current for changing the magnetic flux of a field of the rotor to the first stator from the first inverter while temporally changing the amount of the field axis current, and converts an induced voltage produced in the second stator according to the supplied field axis current into a second DC voltage by the second inverter and outputs the second DC voltage in at least one of two cases where the rotor is at a halt and where the number of revolutions of the rotor is a predetermined number of revolutions or less.