Sliding Mode based Speed Observer Design for Speed control of five Phase Induction Motor

This paper present technique for speed estimation for five phase induction motor. This work incorporates a sliding mode observer design for sensorless speed control of five-phase induction motor. A Vector control employing space vector pulse width modulation-based Sliding Mode Observer (SMO) is designed and evaluated, considering its high accuracy in estimating speed. The proposed current control model based on SMO provides better speed estimation under parameter variations, fault perturbations and load variations. Simulations with different operational conditions including load and resistance variation are conducted to test the sensorless control performance. The stability analysis of the proposed observer is presented through Lyapunov method.