Moteurs Leroy-somer

Emerson Electric Company

Nidec Psa Emotors

Jacques Saint-Michel

Eric Coupart

Christophe Gilles

Pascal Gauthier

Xavier Jannot

Olivier Gas

Atef Abou-Akar

Alexis Dutau

Nicolas Langlard

François Turcat

Philippe Manfe

François Czajkowski

Jean-Marie Guillot

Pascal Beynaud

Michel Renard

Cedric Plasse

Mathias Tientcheu-Yamdeu

Luc Moreau

Laurent Jadeau

Philippe Augier

Moustafa Al Eit

Fatma Abid

André Eydelie

Sebastien Desurmont

Lamya Belhaj

Sara Bazhar

Joseph B McCabe

Brian N Cox

Hédi Kharrat

Louis R Myers

John T Fowler

Jerhod T Smithback

Atef Abou Akar

Joshua A Lorenz

Olivier Savinois

A stator including a ring having teeth with slots there between, and bridges of material each connecting two adjacent teeth at their base on the side of the air gap and defining the bottom of the slot between these teeth. The bridges of material each having at least one region of reduced magnetic permeability that is in the form of at least one localized narrowing formed by a groove or a localized crushing of the material, and/or at least one opening with the width l of the bridge of material, and/or at least one localized treatment in the with l of the bridge of material, which locally reduces the magnetic permeability of the bridge of material, and windings placed in the slots of the ring.

Stator for a rotating electrical machine

A stator for a rotating electrical machine comprises a stator mass comprising teeth and notches between the teeth, each of the notches being, on the air gap side, completely closed, electrical conductors being housed in the notches, the electrical conductors forming a fractional winding, for which the ratio q defined by q=Ne/(2pm) is written as an irreducible fraction z/n, z and n being two non-zero integers, n being different from 1, wherein Ne is the number of stator notches, m the number of winding phases and p the number of pairs of stator poles.

A method for manufacturing a stator of an electrical machine. The method including: a toothed ring having teeth joined together by bridges of material and defining between them slots open radially toward the outside, windings produced outside of the slots, and a yoke configured to be attached to the toothed ring. The method also including attaching at least one piece of sheet-form insulation to at least a portion of each of the windings, inserting said winding portions with the insulation into the slots via a radial movement directed toward the inside of the slots, and assembling the yoke onto the radially exterior surface of the ring to close the slots radially.

A stator for a rotary electric machine, having a stator mass that has slots in which electrical conductors introduced axially into the slots are housed, each of the slots having a continuously closed contour.

A method for manufacturing a wound rotor or stator having more than four poles, preferably a rotor, the rotor or stator having teeth provided with pole shoes. The method includes the following steps, for each pole: (a) producing a partial winding by winding at least one conductor over the portion of the tooth of this pole extending axially along this pole between the pole shoes of this pole and a plane (P) at right angles to the axis of the pole and tangential to a pole shoe of an adjacent pole, (b) pushing back the duly produced partial winding towards the base of the tooth, and freeing said portion of the tooth having been used for the winding, and (c) repeating step (a) to produce another partial winding on the duly released portion of tooth.

Wound rotor or stator and method for manufacturing same

A rotor for a rotary electric machine includes a magnetic rotor body and at least two permanent magnets defining a pole of the rotor, the two permanent magnets being arranged on either side of a radial axis of the pole in a common recess which is provided in the magnetic rotor body and through which the radial axis of the pole passes.

Rotor for a rotary electric machine

The present invention relates to a rotating electrical machine including at least one stator and at least two rotors, which are arranged on either side of the stator along an axis of rotation of the machine,

Rotating electrical machine comprising at least one stator and at least two rotors

A stator for a rotary electric machine, the stator including a jacket and a stack of stator laminations placed inside the jacket, subassemblies of laminations of the stack having extensions with flow channels for passing a cooling fluid therethrough, the subassemblies being disposed in such a manner that fluid flowing along the stack is subjected to a succession of passes within the channels and of passes through wide zones extending between the channels, the stack laminations being arranged in such a manner that for at least one extension, and better for the majority, or even all of the extensions of a subassembly, the flow section made available to the flow of cooling fluid within the extension is greater than the flow section defined by the space extending radially between the extensions and the jacket.

Stator for a rotary electric machine having flow channels for passing a cooling fluid

A salient pole machine and method of forming the same comprising a rotating field assembly and at least one inter-pole cap connected to the rotating field assembly and/or at least end coil cap connected to the rotating field assembly. Each inter-pole cap preferably includes a top surface that has a curvature and/or at least one cavity. Each end coil cap may include at least one support. The salient pole machine may also include at least one fan assembly independent of the rotating field assembly. In a preferred embodiment, the salient pole machine includes at least one mounting plate, wherein each fan assembly is mounted on the mounting plate. The inter-pole caps and the end coil caps preferably comprise composites, polymers, alloys, ceramics, or naturally occurring materials.

High efficiency salient pole machine and method of forming the same

The present invention relates to a rotary electrical machine comprising:

Rotary electrical machine including pole pieces and permanent magnets

The present invention provides an electricity generator for a lighting tower having a plurality of discharge lamps, each lamp being of power greater than 750 W, the generator being arranged to be driven by an engine, the generator being a multiphase generator having n phases, where n is an even integer, each phase being independent in a magnetic circuit that is common to all of the phases and being configured to power one lamp, the generator comprising a rotor with permanent magnets, having 3 n poles, and a stator concentric with the rotor and subjected to the radial magnetic flux from the magnets, the stator comprising a stack of laminations of silicon iron having a silicon content greater than 0.5% and of individual thickness greater than 0.35 mm, defining 4 n magnetic circuit teeth, with every other tooth carrying a winding.

Electricity generator and an installation comprising a lighting tower powered by such a generator

The invention relates to a synchronous electric motor comprising a stator () and at least one rotor () with permanent magnets (), characterized by an embodiment with X&#x3e;X; where Xis the direct reactance and Xthe quadrature reactance.

Synchronous electrical machine comprising a stator and at least one rotor, and associated control device

The invention relates to an electric machine comprising a stator () provided with a plurality of teeth (), each tooth supporting at lest one individual coil (), an external rotor () which is radially arranged outside the stator and provided with constant magnets, an internal rotor () radially arranged inside the stator, provided with constant magnets and connected to the external rotor (). At least one of the external () and internal () rotors is disposed in a flux concentration.

Rotary electric machine comprising a stator and two rotors

The invention relates to a rotary electric machine including a stator, powered by a polyphase current, having a magnetic circuit with teeth forming intervening slots for receiving electrical conductors. The magnetic circuit is made up of an assembly of sectors defining air-gaps intersecting the teeth at half-width.

Rotary electric machine having a stator made up of sectors assembled together

A rotary electric machine including a flux-concentrating rotor with permanent magnets disposed between pole pieces, and a stator with teeth having a free end deprived of pole swellings and a concentrated winding. The pole pieces and the magnets are configured so as to minimize the difference L&#x2212;Lwhere Lis inductance on a forward axis and Lis inductance on a quadrature axis.

Growing community of inventors

Angouleme, France

Jacques Saint-Michel