Sinusoidally distributed winding method suitable for a detector winding

Claim 1

In a sinusoidally distributed winding suitable for a detector winding wherein n-phase winding groups are wound on a ring core having a given number of alternating tooth portions and slots disposed along its inner diameter side so that a plurality of one-phase winding groups produce a 2P polar and sinusoidally distributed magnetic flux distribution of said n-phase winding groups, the improvement comprising a number of serially connected winding groups corresponding to the number of said slots to provide said plurality of one-phase winding groups, said winding groups being wound at one-slot pitch intervals, and a plurality of said one-phase winding groups providing said n-phase winding groups, whereby a 2P polar and n-phase sinusoidally distributed magnetic flux is provided, a number of winding turns of said one-phase winding groups in each of said slots being determined by the following formula: ##EQU7## where S is a variable integer representing said number of slots; k is a variable integer representing a given slot, k being between one and said number of slots; n is a variable integer representing a number of phases; P is a variable integer representing a number of magnetic poles in said detector winding; W is a variable integer representing a total number of turns (the sum of the windings wound at each slot in one phase when i=1 to S); and N k (n) is a variable integer representing the respective number of turns of the windings at the k-th slot in the n-th winding group of said n-phase winding groups.