A decoupling control strategy of IPM machine accounting for compensation of cross-saturation based on SVPWM technique

In this paper, the evaluation of magnetic saturation effects in an interior permanent magnet synchronous motor (IPMSM) over the entire operation range including constant torque region and in flux-weakening range is presented. The decoupling control model for IPMPM with magnetic saturation compensation based on SVPWM method is established. Upon the comparison the model with saturation compensation and ones without saturation compensation, the simulation results show that performance of the decoupling control system with saturation compensation is more stable and more accurate than that of without compensation in constant power region especially operating at a higher speed. And the decoupling control system with saturation compensation improves effectively the system following-up performance, robustness and the control accuracy.