7Borisavljevic A . Limits,modeling and design ofhigh-speed permanent magnet machines[D] . Delft,Netherlands : Delft University of Technology, 2011.
8Hong D K, Woo B C,Lee J Y, et al. Ultra high speedmotor supported by air foil bearings for air blower coolingfuel cellsfJ]. IEEE Transactions on Magnetics, 2012,48(2): 871-874.
9Beer P,Tessaro J,Eckels B,et al. High speed motordesign for gas compressor applications[C]//35thTurbomachinery Symposium. College Station,Texas:TexasA&M University, 2006: 103-112.
10Hawkins L A, Zhu L, Blumber E J. Development of a125 kW AMB expander/generator for waste heat recovery[J]. Journal of Engineering for Gas Turbines and Power,2011(133): 072503.