Adaptive High-Frequency Injection-Based Sensorless Control for an Outer-Rotor PMaSynRM

Hande Nevin Kılıç; Yusuf Öner

doi:10.2478/pead-2025-0031

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Adaptive High-Frequency Injection-Based Sensorless Control for an Outer-Rotor PMaSynRM

Power Electronics and Drives

Volume 10 (2025): Issue 1 (January 2025)

By: Hande Nevin Kılıç and Yusuf Öner

Open Access

|Dec 2025

Abstract

High-frequency signal injection (HFI) is widely used for sensorless motor control but has mostly been studied in machines with high saliency ratios. In outer-rotor permanent magnet-assisted synchronous reluctance motors (OR-PMaSynRMs), the external rotor extends the magnetic flux path and increases the symmetry of the reluctance barriers. This reduces the inductance difference between the dq-axes, thereby lowering the saliency and weakening the effectiveness of conventional HFI methods in position estimation. Hence, advanced sensorless control strategies are required for such motors. This study presents an adaptive HFI control strategy that combines frequency, amplitude and filter adaptation with a proposed voltage limiting mechanism. The algorithm has been experimentally implemented for the first time on an OR-PMaSynRM. The results confirm the applicability of the HFI technique to low-saliency motors and its ability to provide reliable and robust sensorless control.

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Articles in this issue

DOI: https://doi.org/10.2478/pead-2025-0031 | Journal eISSN: 2543-4292 | Journal ISSN: 2451-0262

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Language: English

Page range: 487 - 507

Submitted on: Oct 20, 2025

Accepted on: Dec 5, 2025

Published on: Dec 31, 2025

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

Outer-rotor permanent magnet-assisted synchronous reluctance motor,

Adaptive highfrequency signal injection control,

Rotor position estimation,

Voltage limiting,

Sensorless motor control

Related subjects:

Computer sciences,

Artificial intelligence,

Engineering,

Electrical engineering,

Electronics

© 2025 Hande Nevin Kılıç, Yusuf Öner, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 10 (2025): Issue 1 (January 2025)