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Evaluation of saliency tracking as an alternative for health monitoring in PMSM-drives under nonstationary conditions

Arellano-Padilla, J.; Sumner, M.; Gerada, C.

Evaluation of saliency tracking as an alternative for health monitoring in PMSM-drives under nonstationary conditions Thumbnail


J. Arellano-Padilla

Professor of Electrical Energy Systems


This paper evaluates the capability of saliency tracking to assess the health condition of permanent magnet synchronous motor (PMSM) drives operating under nonstationary conditions. The evaluated scheme is based on saliency tracking methods, which are associated to the accurate sensorless control of AC drives without zero speed limitations. In this work two representative saliency tracking architectures are evaluated: High Frequency (HF) injection, and PWM transient excitation. Although a monitoring approach based on HF injection was previously reported, a comparative study to evaluate the most representative saliency tracking schemes to assess health condition in drives was still missing. The aim of this work is to fill out this gap by evaluating and comparing two saliency-based monitoring schemes (one based on HF-injection and the other based on PWM transient excitation) to evaluate their performance in the presence of inter-turn winding faults.
Simulation and experimental results are presented which confirm that both schemes offer excellent detection capabilities and that are suitable for drives operating under nonstationary conditions including standstill operation. Significant differences are also found for instance, PWM transient excitation offers improved accuracy since the approach is not affected by the inverter nonlinearities and is suitable for full-speed range applications. The main drawback here is complexity and the hardware requirements. Schemes based on HF-injection proved to be very simple and provide comparable results; however a good performance is only guaranteed for the zero-to-medium speed range applications which limit their applicability.

Journal Article Type Article
Acceptance Date Nov 16, 2015
Publication Date Apr 21, 2016
Deposit Date Jun 30, 2016
Publicly Available Date Jun 30, 2016
Journal IET Electric Power Applications
Print ISSN 1751-8660
Electronic ISSN 1751-8679
Publisher Institution of Engineering and Technology (IET)
Peer Reviewed Peer Reviewed
Volume 10
Issue 4
Pages 284-293
Keywords synchronous motor drives; permanent magnet motors; health and safety; sensorless machine control; PWM invertors; machine windings; control nonlinearities; saliency tracking evaluation; health monitoring; PMSM drives health condition assessment; nonstation
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Additional Information c2016 IEEE. This paper is a postprint of a paper submitted to and accepted for publication in IET Electric Power Applications and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library


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