Schüßler, Benedikt ; Hopf, Timo ; Rinderknecht, Stephan (2022)
Drop-Downs of an Outer Rotor Flywheel in Different Planetary Touch-Down Bearing Designs.
In: Actuators, 11 (2)
doi: 10.3390/act11020030
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
With an increase in renewable energy in the electricity grid, more storage capacity for grid stabilization and energy flexibilization is necessary. Dynamic grid stabilization is one possible application for flywheels. To increase the energy density of flywheels, they can be built as highly integrated outer rotor systems. The losses of the flywheel are reduced by magnetic levitation and operation under vacuum conditions. In the case of the failure or overload of the active magnetic bearings, the system needs touch-down bearings to prevent system destruction. Planetary touch-down bearings consisting of several small bearing units circumferentially distributed around the stator are especially suited for these systems. In the literature, these planetary touch-down bearings are rarely investigated, especially the number of bearing units. Therefore, this paper investigates the influence of the number of touch-down bearing elements in simulations and experiments for an 8-element and a 6-element touch-down bearing arrangement. For the investigation, drop-downs at four different speeds were performed. Simulation and experimental results showed that, for the 6-element touch-down bearing, in contrast to the 8-element touch-down bearing, maximal velocity did not increase with the drop-down speed. Therefore, the touch-down bearing arrangement with fewer elements is preferrable.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Schüßler, Benedikt ; Hopf, Timo ; Rinderknecht, Stephan |
| Art des Eintrags: | Bibliographie |
| Titel: | Drop-Downs of an Outer Rotor Flywheel in Different Planetary Touch-Down Bearing Designs |
| Sprache: | Englisch |
| Publikationsjahr: | 21 Januar 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Actuators |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.3390/act11020030 |
| URL / URN: | https://www.mdpi.com/2076-0825/11/2/30 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | With an increase in renewable energy in the electricity grid, more storage capacity for grid stabilization and energy flexibilization is necessary. Dynamic grid stabilization is one possible application for flywheels. To increase the energy density of flywheels, they can be built as highly integrated outer rotor systems. The losses of the flywheel are reduced by magnetic levitation and operation under vacuum conditions. In the case of the failure or overload of the active magnetic bearings, the system needs touch-down bearings to prevent system destruction. Planetary touch-down bearings consisting of several small bearing units circumferentially distributed around the stator are especially suited for these systems. In the literature, these planetary touch-down bearings are rarely investigated, especially the number of bearing units. Therefore, this paper investigates the influence of the number of touch-down bearing elements in simulations and experiments for an 8-element and a 6-element touch-down bearing arrangement. For the investigation, drop-downs at four different speeds were performed. Simulation and experimental results showed that, for the 6-element touch-down bearing, in contrast to the 8-element touch-down bearing, maximal velocity did not increase with the drop-down speed. Therefore, the touch-down bearing arrangement with fewer elements is preferrable. |
| Freie Schlagworte: | flywheel, energy storage, outer rotor, drop-down, touch-down bearing, backup bearing, catcher bearing, auxiliary bearing, vacuum |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Mechatronische Systeme im Maschinenbau (IMS) |
| Hinterlegungsdatum: | 25 Jan 2022 06:16 |
| Letzte Änderung: | 03 Jul 2024 02:55 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
-
Drop-Downs of an Outer Rotor Flywheel in Different Planetary Touch-Down Bearing Designs. (deposited 03 Mai 2022 11:18)
- Drop-Downs of an Outer Rotor Flywheel in Different Planetary Touch-Down Bearing Designs. (deposited 25 Jan 2022 06:16) [Gegenwärtig angezeigt]
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum