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doi:10.22028/D291-34085
Titel: | Modulation Strategies for Anisotropy-Based Position Estimation of PMSMs Using the Neutral Point Voltage |
VerfasserIn: | Schuhmacher, Klaus Kleen, Stephan May, Chris Nienhaus, Matthias |
Sprache: | Englisch |
Titel: | IEEE Access |
Bandnummer: | 9 |
Seiten: | 68445-68460 |
Verlag/Plattform: | IEEE |
Erscheinungsjahr: | 2021 |
Freie Schlagwörter: | Voltage measurement Inductance Estimation Current measurement Position measurement Modulation Couplings Magnetic anisotropy neutral point permanent magnet machines pulse width modulation sensorless control space vector modulation star point zero-sequence voltage |
DDC-Sachgruppe: | 600 Technik |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Information obtained about magnetic anisotropy via neutral point voltage measurements can be used to estimate the position of synchronous and induction machines at all speeds including standstill. Due to its usually high signal-to-noise ratio, this estimation method can be an attractive alternative to approaches that acquire anisotropy information via current measurements. The position estimation method looked at in this paper relies on anisotropy information in the form of position-dependent inductance ratios. These are obtained through measurement of the voltage between the machine’s neutral point and an artificial neutral point during the application of different voltage vectors via a two-level switching inverter. We analyze the conditions placed on and the consequences of implementing necessary modifications to a standard space vector modulation. Five different modified modulation strategies are compared and investigated, including two newly proposed strategies which use only a minimal set of active and zero voltage vectors for measurement of the inductance ratios and therefore allow high utilization of available voltage and a high update rate of the estimated position. Experimental results for three low-power threephase permanent magnet synchronous machines are presented which suggest that modulation strategies that use active measurement vectors in all three instead of only two axes of the machine are less susceptible to systematic deviations in the position estimation that presumably result from nonlinear machine properties. As part of the machine model, a normalizing inductance variation ratio is introduced, which simplifies expressions and supports the comparison of motors. |
DOI der Erstveröffentlichung: | 10.1109/ACCESS.2021.3077695 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-340854 hdl:20.500.11880/31348 http://dx.doi.org/10.22028/D291-34085 |
ISSN: | 2169-3536 |
Datum des Eintrags: | 21-Mai-2021 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Systems Engineering |
Professur: | NT - Prof. Dr. Matthias Nienhaus |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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09423990.pdf | 2,97 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons