A new slip compensation method for induction motors based on current vector decoupling

This paper presents a new slip compensation method for the traditional scalar control (V/f) of induction motors. Based on the level of q-axis component of stator current, the steady-state slip of motor speed is estimated by means of flux-oriented current tracking that is usually applied in vector control. The method features both the simplicity of scalar control and improvement on the performance of speed regulation. The simulation and experimental results are shown and discussed to verify the effectiveness of the proposed method.