On Design of Switched Reluctance Motor Drive Controller /

Abstract

Switched Reluctance Motor (SRM) are very attractive and have rising popularity graph because it has very simple construction and robust structure, low operational cost, extremely high-speed operational capability, and high efficiency at different speeds. High power density, valuable torque ampere ratio, low manufacturing cost due to its simple construction, rigidness, environment friendly because of no permanent magnet, low weight, ability of fault tolerant. Because of these qualities, SRM have an increasing popularity graph and can be the best alternative for industrial, residential and hybrid electric vehicles. It also has some major draw backs for having difficult control because of the nonlinearity in nature, high torque ripple and high acoustic noise. In this thesis a PI based Model Following Sliding Mode Control (MFSMC) has been proposed for the speed control of the motor. SMC is a very beneficial, Because of its ability to reject the disturbance and uncertainties and handle the variation in the system parameters. SMC also provide stable and reliable operation of system. Also, a Direct instantaneous torque controller (DITC) is used for the torque control of the SRM. Because of the nonlinear control strategy, the stability of the proposed controller is being investigated with the help of second method of Lyapunov. Which shows that the system is stable at every point. The designed model is analyzed and simulated in MATLAB Simulink. The results obtained has been compared with PI controller. The result shows that the controller is working very well and it is much better than PI controller.