Patent ID: 7521834
Filing Date: 2009-04-21
Classification: H02K,Y10T

Abstract:
1. A poly-phase electromagnetic device having n winding phases (where n is greater than 2), said device including: n separate electrical conductor phase windings, each completed phase winding being in the form of a continuous electrical conductor strand; a magnetically conducive base having a plurality of slots adapted to receive active portions of the phase windings therein; each phase winding comprising a series of interconnected lap form sub-windings, with each sub-winding defining two active arms that extend through two spaced apart non-adjacent slots in the base, the active arms being joined by one or more suitably formed end turn and/or two connecting arms for connection with adjacent sub-windings or terminals; said active arms and end turn or end turns each formed to include one or more co-extending electrical conductor strands; and wherein said phase windings are configured such that on assembly of the phase windings to the magnetically conducive base there is a maximum of n−1 sub-winding end turns overlapping, while the lengths of the end turns are simultaneously minimized.