Permanent Magnet Synchronous Motor Model Extension for High-Frequency Signal Injection-Based Sensorless Magnet Polarity Detection

István Szalay, Dénes Fodor, Krisztián Enisz and Hunor Medve
Additional contact information
István Szalay: Vehicle Industry Research Center, Széchenyi István University, H-9026 Győr, Hungary
Dénes Fodor: Vehicle Industry Research Center, Széchenyi István University, H-9026 Győr, Hungary
Krisztián Enisz: Vehicle Industry Research Center, Széchenyi István University, H-9026 Győr, Hungary
Hunor Medve: Vehicle Industry Research Center, Széchenyi István University, H-9026 Győr, Hungary

Energies, 2022, vol. 15, issue 3, 1-24

Abstract: In this paper, a novel extended permanent magnet synchronous motor model is presented that incorporates a quadratic flux-current function to represent the polarity-dependent saliency. The proposed model enables the design of sensorless polarity detection algorithms required by the initial position detection of permanent magnet synchronous motors. The novelty of the model is that it integrates the polarity-dependent saliency into the traditional machine model and introduces a new machine parameter, the polarity-dependent saliency coefficient, to specify the Hessian matrix of the flux-current function. A measurement method is presented for determination of the elements of the Hessian and the polarity-dependent saliency coefficient. The solution of the model is given for high-frequency sinusoidal pulsating voltage injection. Experimental results show that the proposed extended model accurately predicts the amplitudes and phases of the second harmonics of the motor currents, which are the carriers of the polarity-dependent information. This information enables a current measurement-based polarity detection algorithm using the phase difference between the fundamental and second harmonic of the apparent d -axis current. Both the presented measurement data and the proposed model show that injection in the d -direction is optimal for polarity detection.

Keywords: permanent magnet synchronous motor; sensorless control; saliency; initial position detection; polarity detection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/3/1131/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/3/1131/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:3:p:1131-:d:741599

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().