Abstract: The present invention relates to a multilayer laminate comprising at least three layers, wherein the two outer layers are each nonwoven backing sheet (7) containing a crystalline silicate mineral powder impregnated with a coating of an impregnating resin based on acrylate derivatives, which is suitable for increasing the compactness of the insulating sheet and for preventing the silicate mineral powder from detaching from the aramid fiber during use; the multilayer laminate having an inner layer being free of crystalline silicate mineral powder that comprises either i) heat resistant floc and binder, or ii) heat resistant polymeric film. The impregnating resin also comprises an organic solvent, which is capable of reducing the viscosity thereof and of promoting its deep penetration into the sheet. In addition, the impregnating resin comprises a UV polymerization photoinitiator which is suitable for curing the resin, only after said resin has been applied to the sheet and has penetrated deeply therein.

Abstract: The present invention relates to an insulating sheet of a nonwoven sheet, for example a sheet comprising aramid fiber, comprising 15 to 80 percent by weight of a crystalline silicate mineral powder, for example a mica powder, the nonwoven sheet impregnated with a coating of an impregnating resin based on acrylate derivatives, which is suitable for increasing the compactness of the insulating sheet and for preventing the silicate mineral powder from detaching from the nonwoven sheet during use. The impregnating resin also comprises an organic solvent, which is capable of reducing the viscosity thereof and of promoting its deep penetration into the sheet. In addition, the impregnating resin comprises a UV polymerization photoinitiator which is suitable for curing the resin, only after said resin has been applied to the sheet and has penetrated deeply therein. The invention also describes the method for impregnating the insulating sheets.

Abstract: The present invention is a variable air gap in a rotary electric machine, notably a permanent magnet-assisted synchronous reluctance electric machine.

Abstract: The present invention is a rotor (1) for an electrical machine featuring magnetic poles with asymmetric flux barriers (9, 10, 11). Additionally, lateral magnets (20) are provided in at least one flux barrier (9, 10, 11) of each pole.

Abstract: The present invention is an electrical machine stator comprising a crown (12) and a cylindrical support (7). Crown (12) is an assembly of stator segments (1) having the shape of a T, having a vertical leg (2) forming a stator tooth. Cylindrical support (7) comprises radial orifices (14) for passage of the vertical leg of the T of the stator segments.

Abstract: The present invention is an electrical machine comprising a stator and a rotor (10). The rotor is formed with a rotor body comprising a stack of laminations placed on a rotor shaft. The rotor includes at least one cavity with at least one arm for retaining at least one balancing weight.

Abstract: The present invention relates to a rotor (1) for an electrical machine having N primary magnetic poles (13) and N secondary magnetic poles (14). the poles are flux barriers having opening angles (?1, ?2, ?3) for the poles to be asymmetrical. The invention further relates to an electrical machine comprising such a rotor.

Abstract: The present invention relates to a rotor (1) for an electric machine consisting of N primary magnetic poles (13) and N secondary magnetic poles (14), said poles consisting themselves of flux barriers (9, 10, 11) separated from axial housings (6) by magnetic bridges (19, 20, 21). According to the invention, on either side of axial housings (6), magnetic bridges (19, 20, 21) are aligned in a straight line, forming an angle ?1 for primary magnetic poles (13) and an angle ?2 for secondary magnetic poles (14) with respect to a radial direction, in such a way that ?2=?1+1±0.5. The invention further relates to an electric machine comprising such a rotor.

Abstract: The present invention relates to a compression device driven by an electric machine, for which the rotor (1) comprises a rotor shaft (31), a cylindrical magnet (34), and a non-magnetic shrink ring (33). According to the invention, the rotor shaft (31) includes a bore (36) for inserting one end of the compressor shaft (3) to unitize the two shafts.

Abstract: The present invention is an electric machine comprising a rotor and a stator. The stator comprises radial passages, magnetic flux generators and a tubular sleeve. According to the invention, the inner surface of tubular sleeve is smooth.

Abstract: The present invention relates to an electric machine comprising a rotor (1) and a stator (2) having a wall (3) opposite the rotor, said stator comprising a multiplicity of radial slots arranged circumferentially along said stator. Said slots are provided with apertures (6) opening into said inner wall that are closed by closing means (7, 8) so as to form a multiplicity of closed slots (5).

Abstract: The proposed invention is an electric machine with flux switching comprising: —a movable element (20), comprising a plurality of flux switching teeth, and —a stator (10), comprising a plurality of teeth, excitation coils (15) and armature coils, characterized in that the stator is formed of a succession of elementary cells each comprising: —three teeth, comprising a central tooth (120) and two lateral teeth (121), delimiting therebetween two central notches (140), an excitation coil being housed in the central notches and wound around the central tooth, and —two lateral half-notches (141) on either side of the lateral teeth, each half-notch housing at least in part an armature coil, in such a way that two successive elementary cells share a common lateral notch.

Abstract: The present invention relates to a stator of an electrical machine comprising slots (2) and coils (5, 5?) connected to electric phases. The layout of coils (5, 5?) of an electrical phase includes a parallel combination of branches (4), wherein two coils (5, 5?) are combined in series. Furthermore, loops of two coils (5, 5?) of two branches (4) in parallel are inserted in each slot (2).

Abstract: The present invention relates to a compression device driven by an electric machine, for which the rotor (1) comprises a rotor shaft (31), a cylindrical magnet (34), and a non-magnetic shrink ring (33). According to the invention, the rotor shaft (31) includes a bore (36) for inserting one end of the compressor shaft (3).

Abstract: The present invention is an electrical machine comprising a stator and a rotor (10). The rotor is formed with a rotor body comprising a stack of laminations placed on a rotor shaft. The rotor includes at least one cavity with at least one arm for retaining at least one balancing weight.

Abstract: The present invention relates to an electric machine comprising a rotor and a stator. Stator comprises several radial passages, several magnetic flux generators and a tubular sleeve. According to the invention, the inner surface of tubular sleeve is smooth.

Abstract: A singly-excited flux-switching electrical machine, that includes field coils and phase windings, is provided. The field coils and the phase windings are accommodated respectively in the unevenly shaped notches of a stator, such that the field coils and phase windings are radially offset.

Abstract: The present invention relates to a flux-switching machine, including a stator having phase windings and field coils, wherein, in the machine, at least one field coil is arranged in a pair of notches separated by at least three teeth.

Abstract: The present invention relates to a flux-switching machine, including a stator having phase windings and field coils, wherein, in the machine, at least one field coil is arranged in a pair of notches separated by at least three teeth.

Abstract: A singly-excited flux-switching electrical machine, that includes field coils and phase windings, is provided. The field coils and the phase windings are accommodated respectively in the unevenly shaped notches of a stator, such that the field coils and phase windings are radially offset.