Abstract

In this paper, differential flatness theory and reduced order observer are used to develop sensorless control for induction motor. The concept of flatness is based on the description of flat outlets. The first step is showing that the induction motor is a differentially flat system, since all state variables of the circuits describing the motor’s dynamics can be expressed as functions. In the second step, when the chosen flat outputs involve non available state variable measurements the state observer is used to estimate them. Simulation and experimental results are presented to illustrate the effectiveness of the proposed approach for sensorless control of induction motor.

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