Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-12-18
1998-09-01
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
310182, 310201, H02K 100, H02K 328
Patent
active
058014713
ABSTRACT:
Known bar windings and pulled coils are made of bent bar conductors with a constant cross section and thus insufficiently use the space available in the winding overhang. In addition, because of the bending radii to be respected, in particular in high-pole machines, long connection sections are obtained in relation to the pitch value, so that weight losses are increased. The disclosed shaped conductors are produced without bending radii in a single piece according to their final shape. Their cross section varies in the winding overhangs, so that the space available is utilized to a high extent and short connection sections are produced. Successive shaped conductors are arranged in different layers, so that interlaced multiphase double layers are produced. The length of a conductor lane formed by shaped conductors connected in series is independent from the depth of the grooves and all phase conductors of an interlaced double layer have the same design. Enlarged connection sites accessible at all times to all front faces of the winding overhangs are obtained by shaped conductors with asymmetric ends assembled in pairs before mounting. Motors and generators equipped with said shaped conductors are characterized by high efficiency and power densities.
REFERENCES:
patent: 693579 (1902-02-01), Wait
patent: 1775634 (1930-09-01), Apple
patent: 1789128 (1931-01-01), Apple
patent: 1789129 (1931-01-01), Apple
patent: 4028572 (1977-06-01), Baltisberger
patent: 4403163 (1983-09-01), Armerding et al.
patent: 5331244 (1994-07-01), Rabe
Dougherty Thomas M.
Nguyen Tran N.
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