The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 1999
Filed:
Jul. 26, 1996
Motoyasu Mochizuki, Aichi-ken, JP;
Tsutomu Kawamura, Yokkaichi, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
In a double-layer concentric-wound armature winding for a dynamoelectric machine, the number of slots per phase per pole is set at q. The armature winding comprising a winding which corresponds to one pole and which includes a plurality of coils having different coil pitches from one another. The coils include at least one coil having the number of turns different from those of the other coils. The number q is set at or above 3. The number of coils in one winding is set at (q-n) where n=1, 2, . . . and q-2. The coils are distributed in the slots so that a double-layer, concentric-wound winding resulting in a sinusoidal distribution of magnetomotive force is formed. In another arrangement, the number of pole windings per phase is half of the number of poles in a double-layer concentric-wound winding or a lap winding. The number of coils in one of the pole windings is set at (2x(q-n)).