Title :
Analytical prediction of armature-reaction field in disc-type permanent magnet generators
Author :
Zhang, Y.J. ; Ho, S.L. ; Xie, G.D. ; Wong, H.C.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Hong Kong
Abstract :
A two-dimensional (2D) analytical method is presented for predicting the armature-reaction field in the slotted opening airgap/magnet region of a permanent magnet (PM) disc-type generator. The current in the slot is equivalent to the uniform distributed current sheet along an arc of the slot opening. The effects of stator slot openings are accounted for by the introduction of a 2D relative permanence function which is calculated directly from the nonlinear equation described by conformal transformation. A more refined permanence distribution can then be obtained
Keywords :
machine theory; magnetic fields; magnetic permeability; nonlinear equations; permanent magnet generators; stators; 2-D analytical method; 2-D relative permanence function; armature-reaction field prediction; conformal transformation; disc-type permanent magnet generators; nonlinear equation; slot opening arc; slotted opening airgap/magnet region; stator slot openings; uniform distributed current sheet; Circuit testing; Coils; Current density; Finite element methods; Machine windings; Magnetic analysis; Magnetic fields; Nonlinear equations; Permanent magnets; Stator windings;
Conference_Titel :
Electric Machines and Drives Conference Record, 1997. IEEE International
Conference_Location :
Milwaukee, WI
Print_ISBN :
0-7803-3946-0
DOI :
10.1109/IEMDC.1997.604315
