Title :
Experimental Evaluation of Low-Speed Flux-Focusing Magnetic Gearboxes
Author :
Uppalapati, K.K. ; Bomela, Walter B. ; Bird, Jonathan Z. ; Calvin, Matthew D. ; Wright, Jason D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of North Carolina at Charlotte, Charlotte, NC, USA
Abstract :
Experimental results are presented for three different low-speed flux-focusing magnetic gearboxes. The performance of the magnetic gearbox is compared when utilizing ferrite and NdFeB and also a hybrid design, in which ferrite magnets are used in the inner rotor and NdFeB magnets are used in the outer rotor. The peak torque and efficiency are measured. It is shown that the NdFeB magnetic gearbox has an active torque density of 151 Nm/L.
Keywords :
boron alloys; ferrimagnetic materials; gears; iron alloys; magnetic flux; neodymium alloys; rotors (mechanical); NdFeB; ferrite magnets; flux-focusing magnetic gearboxes; low-speed magnetic gearboxes; torque density; Ferrites; Gears; Magnetic flux; Rotors; Steel; Torque; Torque measurement; Magnetic flux density; magnetic forces; magnetomechanical deflection; permanent magnets (PMs); torque;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2014.2312551
