Direct Torque Control Of Permanent Magnet Synchronous Motor

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Author(s) 
Simhadri Amarendra Babu 

KEYWORDS 
Conventional Direct Torque Control System, Conclusion, Direct Torque Control (DTC) Of PMSM Drive, Introduction, Mathematical Modeling Of Permanent Magnet Synchronous Motor, Reference, Simulation Results, Voltage Vector Selection In DTC Of PMSM Drive 

ABSTRACT 
Permanent Magnet synchronous motors (PMSMs) are used in many applications that require rapid torque response and highperformance operation. The PMSM is very similar to the standard wound rotor synchronous machine except that the PMSM has no damper windings and excitation is provided by a permanent magnet instead of a field winding. The elimination of field coil, dc supply and slip rings reduce the motor loss and complexity. For the same frame size, permanent magnet motors have higher pull out torque. It is mathematically proven that the increase of electromagnetic torque in a permanent magnet motor is proportional to the increase of the angle between the stator and rotor flux linkages, and, therefore, the fast torque response can be obtained by adjusting the rotating speed of the stator flux linkage as fast as possible. This is achieved by using direct torque control (DTC) technique.


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