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Eddy Current Losses in the Rotor Teeth of Aerospace Homopolar Alternators

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4 Author(s)
Erdelyi, E.A. ; Univ. of Colorado Boulder, Colorado ; Jackson, R.F. ; Ahamed, S.V. ; Shah, M.J.

The eddy current losses in rotor tooth-heads of homopolar alternators are generally high and a limiting factor of design. A method is established to calculate eddy current losses in rotor designs with titanium wedges in the intertooth space. A computer program solves numerically the boundary value problem that yields the electric field intensity in the conducting materials. Inverter loads on an experimental 95 KVA, 3,400 cps, three-phase homopolar alternator are calculated to be approximately five percent.

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Aerospace, IEEE Transactions on  (Volume:AS-3 ,  Issue: 2 )