Stator Flux Orientated Control of Asynchronous Motors with Stator Resistance Compensation

A new control strategy of asynchronous motors with stator flux orientation that combines the advantages of both vector control and direct torque control were presented. According to the dynamic model of asynchronous motors,stator flux was controlled respectively. Based on the vertical relation between rotor current vector and rotor flux vector when stator flux was in steady-state,a closed-loop stator resistance on-line tuning method was presented. The experimental results fully confirmed the feasibility of the method.