Induction motor winding

Claim 1

An alternating current polyphase motor having a stator winding including a distributed even number of coil sides arranged in a multiple of four numbers of poles per phase, comprising a stator core including a plurality of slots equal to the number of coil sides, a phase winding for each of said phases, each of said phase winding including a plurality of integrated coil groups with each group including a plurality of coil units, each of said phase windings having said coil units wound as a chain winding and each group having the coil units nested within adjacent slots and spanning a full pole pitch to form a full pitch winding, each of said coil units being a multiple wire wound coil member wound as a single integrated coil member having a multiple of at least two separate wires of a plurality of turns and with the wires dispersed throughout the coil unit for defining first and second coil within said single integrated coil unit, said separate wires in each coil unit having terminal ends defining separate terminal connections for said first and second coils, and switch means connected to said terminal connections and having a first state connecting said winding in a double delta circuit connection in which said phase groups are connected in parallel and having a second state connecting said winding in a second double delta circuit connection in which said groups are connected in series branches with different phase voltages applied within each series branch.