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Sensorless Switched Reluctance Machine and Speed Control: A Study to Remove the Position Encoder at High Speed of Operation

Author

Listed:
  • Jonathan Velasco Costa

    (IDMEC, Técnico Lisboa, University of Lisbon, 1049 Lisbon, Portugal
    These authors contributed equally to this work.)

  • Paulo J. C. Branco

    (IDMEC, Técnico Lisboa, University of Lisbon, 1049 Lisbon, Portugal
    These authors contributed equally to this work.)

Abstract

High-speed electrical machines have been of great research interest because of their excellent efficiency and high storage capacity. In the case of switched reluctance machines (SRMs), position feedback is required for effective operation. The installation of this sensor in a high-speed flywheel is difficult and expensive. This paper proposes and analyses a methodology to estimate the position of a SRM and remove the position encoder to apply the machine as a flywheel at 50,000 rpm. The machine is modeled with non-linear characteristics, and is simulated under single-pulse operation due to the high-speed. Two configurations of the sensorless method are presented: Robust Method and Sequential Method. The robust configuration identifies the firing angles position only, while the sequential setup can track any position. Both configurations present advantages and disadvantages in relation to the error of estimation and to the number of estimations. The methods are tested in closed-loop speed control. In the two cases, the position estimation supports satisfactory results for simulating operation of the machine at high speed.

Suggested Citation

  • Jonathan Velasco Costa & Paulo J. C. Branco, 2022. "Sensorless Switched Reluctance Machine and Speed Control: A Study to Remove the Position Encoder at High Speed of Operation," Energies, MDPI, vol. 15(5), pages 1-14, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1716-:d:758217
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    References listed on IDEAS

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    1. Roberto Rocca & Savvas Papadopoulos & Mohamed Rashed & George Prassinos & Fabio Giulii Capponi & Michael Galea, 2020. "Design Trade-Offs and Feasibility Assessment of a Novel One-Body, Laminated-Rotor Flywheel Switched Reluctance Machine," Energies, MDPI, vol. 13(22), pages 1-19, November.
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