Patent ID: 8786222

Claim:
An open-loop or closed-loop control method for a converter which supplies an electric motor, comprising: acquiring a current space vector as a motor current; setting at least one of (a) a motor voltage and (b) a voltage space vector; determining an induced voltage space vector; forwarding the induced voltage space vector to an integration element; generating a flux space vector having an angular position perpendicular to the voltage space vector, an amount of the flux space vector corresponding to a predefined nominal value; and using a difference of an integration result and the flux space vector generated as feedback in the integration element; wherein the integrand encompasses U _ I = U _ S - R S · I _ S - L S · ⅆ I _ S ⅆ t ; wherein: U I is an induced voltage space vector; U S -R S is a voltage drop at a stator winding; and I S -L S is a flux component caused b stator current.