Estimation of Rotor and Stator Resistance for Induction Motor Drives using Second order of Sliding Mode Controller

Ritu Tak, Sudhir Y Kumar, Bharat Singh Rajpurohit
2017 Journal of Engineering Science and Technology Review  
The continues operation of vector controlled induction motor drives faces the problem of the stator and rotor resistance variation due to saturation, skin effect or in temperature variations. These resistance variations affect the controller performance. This paper illustrates about a new closed loop approach for estimation followed by compensation of the stator and rotor resistance of induction motor by using the second order sliding mode controller. The motor resistances estimated by online
more » ... timated by online and the error between the actual and desired state variables of the induction motor track the sliding surface, the proposed method are based on the rigorous Lyapunov stability criteria. The simulation results show that the high frequency variation in the output waveform reduces as compared to the classical sliding mode controller and the mathematical analysis is simple to reduce the complexity faces in the higher order controller. For the estimation of the control variables of proposed algorithm only current measurement is needed and the controller is independent of the unknown parameter variation as the property of the sliding mode controller. The proposed method has been analyzed and verified with the help of Matlab/Simulink.
doi:10.25103/jestr.106.02 fatcat:uzlymujv2bgcrf32vghfrz4k4e