Patent ID: 9608553
Date: 2017-03-28
CPC Classifications: H02P,Y02T

Claim:
1. A method for regulating voltages of an electric motor including a rotor and a stator, and sensors, the method comprising: measuring, via sensors, currents flowing in the rotor and in the stator; determining setpoints of current; processing, via processing means, signals based on the currents and setpoints; determining intermediate signals by a transformation according to which stator and rotor voltages are expressed in a decoupled reference frame as a function of the processed signals, wherein a variation of a current Id, Iq or If depends only on a voltage on a single axis of the decoupled reference frame, Id being the stator current on the polar axis of Park's transform domain, Iq being the stator current on the interpolar axis of the Park's transform domain and if being the rotor current; and determining signals for regulating voltage based on an inverse transformation as a function of the currents flowing in the rotor and in the stator of the electric motor satisfying the setpoints of current as a function of the intermediate signals obtained by transformation in the decoupled reference frame.