Siva GangadharaRaoVenna, Sneha Vattikonda, SravaniMandarapu
Introduction of permanent magnets toreplace the electromagnetic poles with windings requiring aless electric energy supplysource resulted in compact dc machines. Likewise in synchronous machines, the conventional electromagnetic field poles in the rotor are replaced by the PM polesand by doing so the slip rings and brush assembly are dispensed. With the advent power semiconductordevices the replacement of the mechanical commutator with an electronic commutator in the form of an inverter was achieved. These two developments contributed to the development of PMSMs and Brushless dc machines. Due to many applications of PMSM like Sensor less speed control, appropriate position control, Servo motor,etc. Mathematical modelling of Permanent Magnet Synchronous Motor is carried out and simulated using MATLAB.The most important features of PMSM is its high efficiency given with the ratio of input power after deduction of loss to the input power. There is no field current or rotor current in the PMSM
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