POLY-PHASE ELECTROMAGNETIC DEVICE HAVING AN IMPROVED CONDUCTOR WINDING ARRANGEMENT

A poly-phase electromagnetic device having n winding phases (n>2) wherein each phase is made from a single conductor strand wound in a lap form configuration. The windings are configured such that on assembly to a slotte d magnetically conducive base a maximum of n-1 end turns overlapping is achiev ed so that the slot packing density can be optimised. The preferred configurations also enable neat and compact terminations which facilitates efficient packaging of the completed device. The windings are made either fr om discrete bobbins which are electrically interconnected upon assembly to the base, or alternatively from strings of continuously formed sub-windings. The latter process in particular enables full or partial automation of the windi ng and/or assembly process.