Patent ID: 6229239
Filing Date: 2001-05-08
Classification: H02K

Abstract:
A double excitation rotating electrical machine mounted on a shaft, comprising a rotor (2; 33; 42; 61; 82; 102) whose magnetic circuit carries at least one excitation element and a stator (10; 30; 55; 74; 90; 116) whose magnetic circuit carries a stator winding,wherein the said at least one excitation element comprises at least one annular magnet (7; 28, 29; 51, 54a, . . . 54n-1; 70; 87; 112, 114) associated with at least two discs (3; 24; 44a, . . . 44n; 62; 83a, 83b; 105a, 105b, 107, 109) each provided with radial teeth uniformly distributed around their periphery and at least one annular piece (5; 26; 48; 64; 86; 104) provided with slots in each of which a tooth of at least one toothed disc is engaged without any contact, and in that the magnetic circuit of the stator includes an even number, at least equal to two, of annular magnetic-circuit elements (11; 31; 55a, . . . 55n; 75; 91; 116a, 116b, 116c, 116d), at least one stator excitation winding (14; 34; 57a, . . . 57n-1; 78; 93, 95; 119, 120) being arranged between at least two adjacent elements from among the said magnetic-circuit elements.