Combined Axial/Radial Magnetic Bearing

A device for supporting a shaft includes: a permanent magnet connected to the shaft: a stator having first and second yokes made of a soft-magnetic material: a first actuator coil on the first yoke; and two or more second actuator coils on the second yoke. The first yoke has an opening into which th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Santner, Robert, Jungmayr, Gerald
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A device for supporting a shaft includes: a permanent magnet connected to the shaft: a stator having first and second yokes made of a soft-magnetic material: a first actuator coil on the first yoke; and two or more second actuator coils on the second yoke. The first yoke has an opening into which the shaft is inserted so that an axial air gap is formed between the first yoke and an end face of the shaft, or an element connected thereto. A radial air gap is formed between the first yoke and a circumferential surface of the shaft. A further radial air gap is formed between the circumferential surface of the shaft and the second yoke. The permanent magnet is positioned relative to the first and second yokes such that the permanent magnet generates a magnetic bias flux in both the axial air gap and the further radial air gap.