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Input-Output Feedback Linearization Based Speed & Torque Controller for DTC Based PMSM

Abstract

This paper addresses the performance of a Direct Torque Control (DTC ) based permanent magnet synchronous motor (PMSM) drive based on Input Output Feedback Linearization method. DTC techniques have features that can make a drive system perform with better response and give robustness to control.Although it has many advantages, there will be notable pulsations in current, torque & flux during steady state operation, which will badly affects the drive performance.An improved DTC , based on space vector pulse width modulation(SVPWM) combined with input-output feedback linearization(IOFL) technique is proposed in this paper.Adaptation of speed and torque controller with IOFL technique will improves the drive performance by reduction of torque ripple, robustness against parameter variations. Simulation results are presented to validate the proposed technique.

Aparna .A, Sreelekha.V

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