期刊
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
卷 50, 期 5, 页码 3173-3184出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2014.2303253
关键词
Axial flux; cogging torque; constant power speed range; eddy current; finite-element analysis (FEA); hybrid excitation (HE); permanent magnet; rotor losses
This paper presents an axial-flux machine with hybrid excitation (HE), in which the flux linkage can be regulated in an extremely wide range by using a rotating excitation winding. This machine shows a theoretically infinite constant power speed range and also exhibits a high degree of fault tolerance against uncontrolled generator operation. The machine has a single-stator double-rotor topology, with one rotor mounting permanent magnets and the other supporting the excitation winding. After a review of the state of the art of HE machines, this paper examines the principle of operation of this machine. Subsequently, a prototype is designed, analyzed with finite-element analysis, and built. Finally, experimental results are reported to confirm the theoretical predictions and the benefits and drawbacks of this novel topology.
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