Patent ID: 6771040
Filing Date: 2004-08-03
Classification: H02P

Abstract:
A control apparatus of an on-vehicle dynamo-electric machine comprising:an armature coil and a field coil; the dynamo-electric machine acting as a starter-motor and as a charging generator that is combined with an on-vehicle internal combustion engine; switching elements that are bridge connected to form an inverter for supplying an alternating current to said armature coil of said dynamo-electric machine; a field current control means for controlling a current of said field coil; and control means for applying a PWM signal to the switching elements of the inverter and controlling the current supplied to said field coil; wherein, when said dynamo-electric machine acts as a charging generator, if a rotation speed of said dynamo-electric machine is less than a predetermined value, said control means generates power by controlling said inverter to apply a compensation current for phase control to said armature coil; and when the rotation speed of said dynamo-electric machine is greater than the predetermined value, said control means stops the operation of said inverter so that controlling the current applied to said field coil by said field coil current control means generates a predetermined target voltage.