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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Process and Energy Systems Engineering
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1406565

A Sensorless Efficiency-Optimizing Vector Control Scheme for an Induction Motor Drive

Provisionally accepted
Adeola Balogun Adeola Balogun 1Ayobami Olajube Ayobami Olajube 2Ayokunle Awelewa Ayokunle Awelewa 3*Frank Okafor Frank Okafor 4Timilehin Sanni Timilehin Sanni 3Isaac Samuel Isaac Samuel 3
  • 1 University of Lagos, Lagos, Nigeria
  • 2 Florida State University, Tallahassee, Florida, United States
  • 3 Covenant University, Ota, Nigeria
  • 4 University of Lagos, Akoka, Lagos, Nigeria

The final, formatted version of the article will be published soon.

    In this paper, an energy-saving scheme in rotor field-orientated vector control is presented for induction motor drives. The energy saving scheme minimizes copper and core losses in induction motors, which are equally applicable to induction generators. In the efficiency optimization, an optimal stator angular velocity is uniquely obtained, and consequently, a corresponding optimal slip at any given rotor speed is determined. The challenge of determining a reference for rotor flux linkage that guarantees the minimal copper and core loss regime is overcome by developing a load torque observer loop. The torque observer is developed alongside a rotor speed observer for a sensorless speed operation. The observed mechanical torque is further used to enhance the outer-loop rotor speed control that generates an electromagnetic torque command used in building the reference for the inner-loop stator current control.

    Keywords: vector control, stator speed, Rotor flux, Optimum speed, optimization, 3-Phase Voltage Source Inverter, Power loss

    Received: 06 Jun 2024; Accepted: 12 Sep 2024.

    Copyright: © 2024 Balogun, Olajube, Awelewa, Okafor, Sanni and Samuel. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Ayokunle Awelewa, Covenant University, Ota, Nigeria

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.