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|  | Field oriented control of induction motor for flywheel energy storage systems with dynamical load compensation
Author: Mudaliar, Hiye Krishan
Institution: The University of the South Pacific
Award: M.Sc. Electrical and Electronics Engineering
Subject: Electric motors, Induction | Automatic control, Flywheels, Energy storage
Date: 2018
Call No.: Pac K 2785 .M83 2018
BRN: 1377456
Copyright:10-20% of this thesis may be copied without the authors written permission
Abstract: At present induction motors are the backbones of manufacturing and transportation industry and much attention has been drawn to the best strategies to control them so as to obtain high performance dynamical responses. Among the different issues that have been addressed in the literature, one is the capability of rejection of these control strategies to load disturbances to the motor shaft. The general approach has been to estimate the load on the basis of some model or to reconstruct it by observers, which often result either too complex, as in the case of a Kalman filter, or too dependent on some restrictive assumptions. This thesis addresses the dynamical estimation of unknown load perturbations by using the theory of nonlinear UIO (Unknown Input Observers) or NUIO, whereby the system states are reconstructed without the knowledge of the unknown load torque.
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