alexa Abstract | Fractional Order Speed Control of Three Level Inverter Fed PMSM System Using Sliding-Mode Observer
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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This paper addresses the performance of a permanent magnet synchronous motor (PMSM) speed control system which is driven by a multilevel inverter. A three level inverter is used as the power source for the system which will reduce the winding stresses due to harmonics during the motor operation. A new sliding mode observer based on sigmoid function as switching function is used for estimating the speed and position of PMSM which has the capability to reduce the chattering phenomenon and to make the system more insensitive to disturbances. A fractional order PI controller is used as the speed controller for the system in addition to the two PI controllers that are used as the inner current controllers. Simulation and experimental results can be a testament for the effectiveness of the proposed technique.

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Author(s): Sreerag.K.S, Radhika R

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