Patent ID: 8330403

Claim:
A method for determining the position of a rotor flux vector of an electric motor comprising a stator and a rotor, the method comprising: a step of injecting a first current vector into a first injection reference frame rotating at a first frequency relative to a reference frame synchronous with the rotation of the motor, and a second current vector into a second injection reference frame rotating at a second frequency relative to the reference frame, the second frequency being the opposite of the first frequency, a step of determining a first stator flux induced voltage delivered at the output of a first integrator module synchronous with the first injection reference frame and a second stator flux induced voltage delivered at the output of a second integrator module synchronous with the second injection reference frame, a step of regulating a position of a rotor flux vector by minimizing an error between a real position of the rotor flux vector and an estimated position of the rotor flux vector, the error being determined based on the second stator flux induced voltage.