Abstract: The invention relates to a method for selecting a chopping frequency for application thereof to an inverter controlling a rotating electric machine, wherein the chopping frequency is chosen from among multiple predetermined frequencies depending on the position, in a map, of a current operating point of the assembly formed by the electric machine and the inverter, said map having at least the rotational speed (N) of the electric machine or the frequency (Fe) of the electric current applied thereto as parameter. In at least part of the map, the chopping frequency is furthermore chosen based on a parameter representative of a thermal condition of the electronic switches contained in the inverter. The invention furthermore relates to a method for controlling a corresponding inverter, and to a device implementing this method. The invention is preferably applied to an electric motor vehicle.

Abstract: Rotor (30) for a rotary electric machine, comprising a rotor body (33) comprising metal sheets stacked one on top of the other, the rotor body (33) comprising a plurality of housings (10) for receiving one or more permanent magnets defining poles of the rotor, the housings of a pole being arranged in at least one first (11) and one second (12) row of housings, the first row of housings comprising three U-shaped housings, with a central housing and two side housings, a length (L2) of a larger rectangle enclosed in the central housing being equal to +/?20% of the length (L1) of the largest rectangle enclosed in a side housing, at least one of the side housings, in particular the two side housings of the first row, comprising a recess (15) which extends from the side housing to the central housing.

Abstract: A rotary electric machine includes a stator including a rotor body and a winding, the winding passing through slots of the rotor body, the slots having an isthmus. A rotor includes a rotor body with cavities and permanent magnets, arranged in the cavities, forming magnetic poles having a central axis (d), a quadrature axis (q) being equidistant from two successive central axes (d). The ratio between the width of the isthmus and the width of the slot being greater than or equal to 0.40 and less than or equal to 0.7, and the ratio between an air gap at the central axis and an air gap at the quadrature axis being greater than or equal to 0.8 and less than or equal to 1.5. An electrical assembly includes such a rotary electric machine and an inverter.

Abstract: The invention predominantly relates to a rotating electrical machine for a motor vehicle, comprising: a rotor having an even number of pole pairs Np; and a stator (10) comprising a body provided with slots and a three-phase winding (14) inserted into the slots in the stator body. The three-phase winding (14) comprises: at least a first group (G1) of portions of phases (U, V, W) and a second group (G2) of portions of phases (U, V, W) which are associated with a first set of at least three bridge arms (21.1); and at least a third group (G3) of portions of phases (U, V, W) and a fourth group (G4) of portions of phases (U, V, W) which are associated with a second set of at least three bridge arms (21.1).

Abstract: The invention pertains primarily to a rotary electric machine, in particular for a motor vehicle, including: —a stator comprising a body provided with teeth delimiting slots and a winding that is housed in the slots of the stator body; —a rotor (12) comprising a body (21) and poles (22) that are formed by permanent magnets (23), characterized in that —two successive polar angles, each corresponding to a circumferential extent of a pole (22), or —two successive dual polar angles (A0-A4), each corresponding to a circumferential extent of two adjacent poles (22), —exhibit an angular difference in relation to one another that is dependent on an angular offset parameter (6) related to a stator pitch.

Abstract: The invention relates mainly to a rotating electrical machine of a motor vehicle, comprising a rotor (12) haying an axis (X) comprising at least one permanent magnet (20) and a stator (11) surrounding the rotor and comprising a body (24) provided with a plurality of slots (30) and an electrical winding (25), the winding comprising phase windings (26) arranged in the slots, each phase winding being formed by at least one conductor (35). The rotor (12) comprises 3, 4 or 5 pairs of poles. The stator comprises two three-phase systems, each formed by three delta connected phase windings (26). The number of conductors (35) per slot (30) is strictly greater than 2 and each conductor has an active portion (40) inserted in a corresponding slot (30), the active portion with a substantially rectangular section being of is radial length (L2) smaller than or equal to 3.6 mm.

Abstract: The invention predominantly relates to a rotating electrical machine for a motor vehicle, comprising: a rotor having an even number of pole pairs Np; and a stator (10) comprising a body provided with slots and a three-phase winding (14) inserted into the slots in the stator body. The three-phase winding (14) comprises: at least a first group (G1) of portions of phases (U, V, W) and a second group (G2) of portions of phases (U, V, W) which are associated with a first set of at least three bridge arms (21.1); and at least a third group (G3) of portions of phases (U, V, W) and a fourth group (G4) of portions of phases (U, V, W) which are associated with a second set of at least three bridge arms (21.1).

Abstract: The invention relates mainly to a rotating electrical machine (10) for a motor vehicle, comprising:—a rotor;—a stator (11) extending along an axis, said stator (11) comprising a body (24) provided with a plurality of stator teeth (28) defining slots (30, 30?),—the stator (11) comprising a winding with conductors (35) housed in the slots (30, 30?);—in a plane (P) orthogonal to the axis along which the stator (11) extends,—a first slot (30) has a first width (L1) measured in an orthoradial direction, radially in the middle of the first slot (30), and—a second slot (30?), separate from the first slot (30), has a second width (L2) measured along an orthoradial direction, radially in the middle of the second slot (30?); characterised in that the first slot width (L1) is different from the second slot width (L2).