Online Identification of Flux Linkage of PMSM with Unbalanced Stator Resistance

For the permanent magnet synchronous motor (PMSM) with unbalanced stator resistance, a method for online identification of rotor flux linkage based on model reference adaptive control (MRAC) theory is proposed. This method designs the self-adaptive law based on the Popov hyper-stability theory, which ensures the convergence of the identification results under specific conditions. The simulation results show the balanced state of the stator resistance, the motor parameters identified in the unbalanced state can also converge near the true value in a short time, and the error is small.