Hubert Mitterhofer, Wolfgang Amrhein, Wolfgang Gruber,
"Towards High Speed Bearingless Drives"
: Twelfth International Symposium on Magnetic Bearings, 23. - 25.08.2010, Wuhan/China, Wuhan University of Technology Press, Seite(n) 708-713, 8-2010, ISBN: 978-7-900503-06-0
Original Titel:
Towards High Speed Bearingless Drives
Sprache des Titels:
Englisch
Original Buchtitel:
Twelfth International Symposium on Magnetic Bearings, 23. - 25.08.2010, Wuhan/China
Original Kurzfassung:
The design of a high speed bearingless drive shows special requirements concerning topology and loss minimization. This paper discusses the use of a bearingless disc motor for such a purpose. The effects of the selected geometric dimensions on the ability to produce passive and
active bearing forces are studied in 3D-FEM simulations. Furthermore, a toroid winding, suitable for the chosen flat motor geometry, and an adequate 5-phase winding scheme are proposed. In an analytical part, the copper losses due to the motor and bearing currents, as well as due to the
external rotor magnet field are calculated. The results lead to the selection of a preferable litz wire gauge which is finally used in the construction of a first motor prototype.
Sprache der Kurzfassung:
Englisch
Englische Kurzfassung:
The design of a high speed bearingless drive shows special requirements concerning
topology and loss minimization. This paper discusses the use of a bearingless disc motor for such
a purpose. The effects of the selected geometric dimensions on the ability to produce passive and
active bearing forces are studied in 3D-FEM simulations. Furthermore, a toroid winding, suitable
for the chosen flat motor geometry, and an adequate 5-phase winding scheme are proposed. In
an analytical part, the copper losses due to the motor and bearing currents, as well as due to the
external rotor magnet field are calculated. The results lead to the selection of a preferable litz wire
gauge which is finally used in the construction of a first motor prototype.
Forschungs-