Patent ID: 7965057

Claim:
A method for operation of a three-phase rotating electrical machine which has two stator winding sets and each stator winding set has three phase windings connected in a star circuit, and the star circuits of the stator winding sets have a phase shift of 30 degrees electrical with respect to one another, and an associated converter unit is respectively provided for each respective stator winding set, comprising: each respective stator winding set is fed by the associated converter unit; and a respective regulation device is provided for each converter unit, and each converter unit is driven by means of a drive signal from the associated regulation device independently of regulation devices of the respective other converter units, wherein, with regard to the respective regulation device, the drive signal is produced in the regulation device by regulation of an actual torque value (M actA , M actB ) at a predeterminable reference torque value (M refA , M refB ) and a regulation of an actual stator flux value (ψ actA , ψ actB ) at a total reference stator flux value (ψ ref, totA , ψ ref, totB ), and wherein, with regard to the respective regulation device, the total reference stator flux value (ψ ref, totA, ψ ref, totB ) is formed from a predeterminable reference stator flux value (ψ refA , ψ refB ) and from a difference stator flux value (ψ eA , ψ eB ) with a difference stator flux value (ψ eA , ψ eB ) being calculated from a difference between a first stator flux value (ψ 1A , ψ 1B ) and a second stator flux value (ψ 2A , ψ 2B ).