Patent ID: 6335606
Filing Date: 2002-01-01
Classification: B60L,H02K,H02P,Y02T

Abstract:
A current control device for a motor/generator, the motor/generator having a stator provided with a plurality of coils, a first rotor provided with a fixed number of magnetic poles facing the stator, and a second rotor provided with fewer magnetic poles than the first rotor, the magnetic poles of the second rotor also facing the stator, the control device comprising:an inverter which regulates a wave form of an AC power current flowing through the coils in response to a signal; and a microprocessor programmed to: calculate a wave form of a first current flowing through the coils which generates a rotating magnetic field which is synchronous with a magnetic field produced by the first rotor; calculate a wave form of a second current flowing through the coils which generates a rotating magnetic field which is synchronous with a magnetic field produced by the second rotor; calculate a wave form of a correcting current which, at a position where a specific magnetic pole in the first rotor and a pole of the second rotor with the same polarity face each other, increases a density of a magnetic flux passing through the specific magnetic pole; and generate the signal which realizes a composite wave form comprising a wave form of the first current, a wave form of the second current and a wave form of the correcting current.