Stator-flux-oriented control with high torque dynamics for IM and PMSM

Electric vehicles pose specific challenges to the drive system and the control scheme. Safety-relevant features like slip-slide control, electronic stability programs or emergency-brake assistance require fast torque control in the whole speed range at limited voltage control margin. Stator-flux-oriented Indirect Stator-Quantities Control (ISC) is limited only by the physical bounds of available voltage and switching frequency and allows special guidance of the flux trajectory to reach excellent torque performance. In this paper, ISC is introduced for the induction machine as well as for the permanent-magnet synchronous machine. Torque transients are presented for both machine types in comparable dimensioning.