Towards High Speed Bearingless Drives
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.
Bearingless Drive Disc Motor Toroid Winding Eddy Current Losses Skin Effect Proximity Effect Litz Wire
Hubert Mitterhofer Wolfgang Amrhein Wolfgang Gruber
Institute for Electrical Drives and Power Electronics Johannes Kepler University Linz, Austria
国际会议
The Twelfth International Symposium on Magnetic Bearings(第十二届国际磁悬浮轴承学术会议)
武汉
英文
749-754
2010-08-22（万方平台首次上网日期，不代表论文的发表时间）