Improvements on a Sensorless Scheme for a Surface-Mounted Permanent Magnet Synchronous Motor Using Very Low Voltage Injection

Jaime Pando-Acedo, Enrique Romero-Cadaval, Maria Isabel Milanes-Montero and Fermin Barrero-Gonzalez
Additional contact information
Jaime Pando-Acedo: Department of Electrical, Electronic and Automation Engineering, University of Extremadura, 06006 Badajoz, Spain
Enrique Romero-Cadaval: Department of Electrical, Electronic and Automation Engineering, University of Extremadura, 06006 Badajoz, Spain
Maria Isabel Milanes-Montero: Department of Electrical, Electronic and Automation Engineering, University of Extremadura, 06006 Badajoz, Spain
Fermin Barrero-Gonzalez: Department of Electrical, Electronic and Automation Engineering, University of Extremadura, 06006 Badajoz, Spain

Energies, 2020, vol. 13, issue 11, 1-17

Abstract: Sensorless control of electrical drives is still a difficult task, especially in the lower speed region. Moreover, when the machine has a low saliency such as in the case of Surface Mounted Permanent Magnet Synchronous Motor (SMPMSM), high frequency injection techniques are even more challenging. In this paper, an enhanced demodulation algorithm for the sensorless control of a SMPMSM is proposed. The new scheme uses the high frequency injection in the Synchronous Reference Frame (SRF) and employs also the negative sequence content of the measured current for improved accuracy. This allows an improved performance with a lower amplitude of the injected signal, thus reducing the noise and additional losses in the motor. It is found that, by using both components with the algorithm developed the estimation ripple can be greatly reduced and the system can operate properly with a voltage injection of only 2.17% of the rated motor voltage, which is lower than most found in the literature, specially for low saliency machines. Simulations tests are carried out for the validation of the proposed method and experimental results in a 6.7 kW SMPMSM confirm its usefulness and correct operation with a reduced voltage injection, both in no-load and load conditions, for different low speeds, including start-up.

Keywords: control; electric drives; pmsm; pulsating; sensorless; signal injection (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: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/11/2732/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/11/2732/ (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:13:y:2020:i:11:p:2732-:d:364515

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 ().