Patent ID: 7818873
Filing Date: 2010-10-26
Classification: H01F,H02K,Y10T

Abstract:
1. A method of manufacturing an excitation coil of a rotor of a rotary electrical machine, comprising the steps of: winding at least one electrically conductive element to form, in superimposed layers, a horizontal and vertical juxtaposition of turns of the electrically conductive element with interstices formed between adjacent turns, the excitation coil including radially and axially adjacent turns such that all of the radially adjacent turns of the same vertical juxtaposition are radially aligned in the direction of a radial orientation of the excitation coil and the axially adjacent turns of the same layer being axially aligned in the direction of an axial orientation of the excitation coil perpendicular to the direction of the radial orientation; and subsequent to forming a first layer of the superimposed layers, impregnating and filling the interstices of the first layer with a binder in a liquid or semi-liquid form while forming turns of a second layer of the superimposed layers on the first layer.