Speed Control of Three phase Permanent Magnet Synchronous Motor using Sliding Mode Controller

Permanent magnet electric motor (PMSM) drive is analysed during this paper. Mathematical modeling is completed in rotor coordinate system (dq axis). PMSM exhibits best performance among various sorts of motors, because due to its characteristics such as high power density, high efficiency, robust construction, lower mass and lower moment of inertia. PMSMs have many applications in home appliances and also in industries. Control of PMSM is difficult because of its non-linearity. Vector control method is employed here. Speed regulation of PMSM is performed using Proportional Integral (PI) controller and Sliding mode controller (SMC). SMC has better performance in terms of tracking ability and disturbance rejection. Simulations are done in MATLAB/Simulink environment.