US 11,705,768 B2
Twisted coil structures for an electric motor and systems, components, assemblies, and methods thereof
Rodwan T. Adra, Peoria, IL (US); Brian R. Janes, Chillicothe, IL (US); Andrew Friebohle, East Peoria, IL (US); and Edwin B. Schultz, Pekin, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on May 18, 2021, as Appl. No. 17/322,899.
Prior Publication US 2022/0376574 A1, Nov. 24, 2022
Int. Cl. H02K 3/12 (2006.01); H02K 19/10 (2006.01); H02K 3/48 (2006.01); H02K 1/16 (2006.01)
CPC H02K 3/12 (2013.01) [H02K 1/16 (2013.01); H02K 3/48 (2013.01); H02K 19/103 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A switched reluctance motor comprising:
a stator including a plurality of stator poles and a plurality of stator slots, each said stator slot being positioned between a pair of the plurality of stator poles;
a rotor positioned within the stator; and
a plurality of coils, each said coil being positioned around a corresponding one of the stator poles,
wherein each said coil is comprised of a plurality of electrically conductive wires and forms an elongate ring with a pair of opposing long sides and opposing short sides connecting the long sides,
wherein, for each said coil, the electrically conductive wires are arranged in a plurality of groups,
wherein, for each of the groups, the electrically conductive wires on a first long side of the pair of opposing long sides are twisted together in a clockwise twisting direction, as viewed from a first of the short sides, continuously along an entire length of the first long side, and
wherein, for each of the groups, the electrically conductive wires on a second long side of the pair of opposing long sides are twisted together in a counterclockwise twisting direction, as viewed from a second of the short sides, continuously along an entire length of the second long side.