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Sensorless passivity based control for induction motor via an adaptive observer.

Ramzi Salim1, Abdellah Mansouri1, Azeddine Bendiabdellah2

  • 1Laboratoire d'Automatique et Analysis des Systems (L.A.A.S), Department of Electrical Engineering, Ecole Nationale Polytechnique-Maurice Audin-Oran. BP 1523 El' M'naouer, Oran, Algeria.

ISA Transactions
|October 16, 2018
PubMed
Summary

This study introduces a cost-effective, high-performance control strategy for sensorless induction motors (IM) using passivity-based control and an adaptive observer. The method enhances reliability by managing energy and minimizing instability in regenerative modes.

Keywords:
Adaptive observerInduction motorPassivity controlRegenerating modeSensorless

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Area of Science:

  • Electrical Engineering
  • Control Systems
  • Robotics

Background:

  • Sensorless control of induction motors (IM) is crucial for cost-effective and reliable operation.
  • Traditional control methods often face challenges in achieving high performance across various operating modes.
  • Passivity-based control offers a physically meaningful and robust approach to system regulation.

Purpose of the Study:

  • To develop and apply a sensorless control strategy for induction motors based on passivity.
  • To enhance operational performance, reliability, and reduce costs.
  • To design an adaptive observer for estimating key motor parameters.

Main Methods:

  • Utilizing passivity-based control by reshaping system energy and injecting damping.
  • Implementing a full-order adaptive observer to estimate rotor flux and mechanical speed.
  • Synthesizing observer gains to minimize instability in regenerative modes.

Main Results:

  • The proposed control strategy ensures high performance and increased reliability for sensorless IM.
  • The adaptive observer accurately estimates essential motor variables.
  • Minimized instability in the torque-speed plane during regenerative operation.

Conclusions:

  • Passivity-based control is a simple and effective method for sensorless IM.
  • The integrated control-observer system demonstrates robust performance across motor, regenerative, and low-speed modes.
  • This approach offers a viable solution for cost-effective and reliable motor control.