Dietz, Daniel ; Binder, Andreas (2021)
Eddy Current Influence on the Control Behaviour of Bearingless PM Synchronous Machines.
In: IEEE Transactions on Industry Applications, 57 (6)
doi: 10.1109/TIA.2021.3084120
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The influence of the additional air gap field in bearingless permanent magnet (PM) synchronous machines, caused by rotor eddy currents, leads to a decrease in bearing force amplitude and to a spatial shift of the bearing force vector with respect to the demanded force direction. Together with the gyroscopic effect and the influence between torque and bearing force generation, this effect may endanger the position control system stability. For a 1-kW/60 000-min −1 prototype and a 40-kW/40 000-min −1 machine, this is exemplified in order to derive a limit for rotor eddy currents in bearingless PM synchronous machines of different power classes. A machine with low gyroscopic coupling allows for a stronger eddy current effect and torque generation influence, independent of the machine size. The maximum admissible spatial shift of the bearing force vector due to rotor eddy currents depends on the gyroscopic rotor properties and the machine utilization. From measurements on a prototype machine, a rough limit is derived.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Dietz, Daniel ; Binder, Andreas |
| Art des Eintrags: | Bibliographie |
| Titel: | Eddy Current Influence on the Control Behaviour of Bearingless PM Synchronous Machines |
| Sprache: | Englisch |
| Publikationsjahr: | November 2021 |
| Verlag: | IEEE |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Transactions on Industry Applications |
| Jahrgang/Volume einer Zeitschrift: | 57 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1109/TIA.2021.3084120 |
| Kurzbeschreibung (Abstract): | The influence of the additional air gap field in bearingless permanent magnet (PM) synchronous machines, caused by rotor eddy currents, leads to a decrease in bearing force amplitude and to a spatial shift of the bearing force vector with respect to the demanded force direction. Together with the gyroscopic effect and the influence between torque and bearing force generation, this effect may endanger the position control system stability. For a 1-kW/60 000-min −1 prototype and a 40-kW/40 000-min −1 machine, this is exemplified in order to derive a limit for rotor eddy currents in bearingless PM synchronous machines of different power classes. A machine with low gyroscopic coupling allows for a stronger eddy current effect and torque generation influence, independent of the machine size. The maximum admissible spatial shift of the bearing force vector due to rotor eddy currents depends on the gyroscopic rotor properties and the machine utilization. From measurements on a prototype machine, a rough limit is derived. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektrische Energiewandlung > Elektrische Energiewandlung 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektrische Energiewandlung |
| Hinterlegungsdatum: | 03 Nov 2022 15:03 |
| Letzte Änderung: | 16 Feb 2023 14:08 |
| PPN: | 505073714 |
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