Ifp Energies Nouvelles

Mavel Edt S.p.a.

Mavel S.r.l.

Luca Favre

Davide Bettoni

Wissam Dib

Julien Boisson

Benjamin Gaussens

Fabrice Le Berr

Misa Milosavljevic

Stéphane Venturi

Thomas Valin

Abdenour Abdelli

Fabien Desarnaud

Andrea Tonino

Fabio Borello

A stator with closed slots is described, comprising a first internal stator part and a second external stator part configured to form the closed slots. The stator further includes a winding comprising at least a conductor configured to be wound in the stator closed slots into which are inserted the conductors forming the winding. The winding is overlapped starting with a lower conductor in correspondence with a bottom wall of the slot and ending with an upper conductor in correspondence with an upper wall of the slot to form a lower channel between the lower conductor and the bottom wall of the slot and an upper channel formed between the upper conductor and the upper wall of the slot. The lower and upper channels serving as the passage of a cooling fluid of the stator.

Stator with closed slots with a fluid injection cooling system for an electric machine and electric machine comprising said stator

A process is described, for making an electric conductor for a winding of an electric machine comprising the following steps: providing an external shell (} with a tubular shape made of electrically conducting material; inserting at least two wires (made of electrically conducting material in the external shell (); heating the external shell () and the wires () inserted therein; laminating wherein the external shell (and the wires (are formed to modify the profile of their cross section; optionally repeating at least one of the two previous steps; an electric conductor made with such process and an electric machine comprising a winding made with such electric conductor are further described.

Process for making an electric conductor for a winding of an electric machine, electric conductor made with such process and electric machine comprising a winding made with such electric conductor

The present invention is an electrical machine comprising a stator and a rotor (). 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.

Electrical machine with a rotor having a cavity for the dynamic balancing of the rotor

The present invention relates to an electrical machine comprising a rotor () and a stator, rotor () being formed by assembling a rotor body () and a rotor shaft (). According to the invention, rotor shaft () is knurled and the outside diameter of rotor shaft () is greater than the inside diameter of rotor body (), by a value ranging between 0.05 mm and 0.3 mm. The present invention further relates to a method of manufacturing such an electrical machine.

Electric machine comprising a knurled rotor shaft and method of manufacturing such a machine

The invention relates to a closed rotary electrical machine incorporating a cooling system comprising two internal fans secured on the shaft of the rotor, at the two ends of the rotor. Each fan faces the inner face of a flange comprising fins orient the flow of air created by the internal fans and can capture the heat from operation of the machine. A casing which contains the rotor and the stator of the electrical machine is sealed by two flanges. The cooling system also comprises external cooling for cooling the casing and flanges, comprising air or liquid.

Closed rotary electric machine comprising an internal cooling system

The invention relates to an enclosed rotary electrical machine including a cooling system comprising two internal fans () fixedly mounted on shaft () at both ends of rotor (). The rotor and stator () are contained in an enclosure sealed by two flanges. The fans allow dual air circulation in flux barriers surrounding the rotor magnets and formed by axial recesses running throughout the rotor, and also air circulation in the space created between the internal fans and the inner faces of the flanges comprising fins () which orient the air flows created by the fans to capture the heat thereof. External cooling allows the enclosure and the flanges to be cooled, by air or liquid cooling.

Closed rotating electrical machine comprising an internal air cooling system of the magnets in the rotor

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

Device for compressing a fluid, driven by an electric machine with a rotor shaft having a non-magnetic shrink ring

The invention relates to a rotary electrical machine () with an integral magnetic sensor () of the angular position of the rotor (). The sensor includes a rotary part () with magnet () fixed to the end () of the rotation shaft () at the rear of the machine, facing a fixed part () including Hall effect sensors and mounted on a fixed support () connected to the frame of the machine. The machine includes a bearing () centered on the axis (X), separating the rotary and fixed parts of the sensor. This bearing, fixed to the shaft and to the metal support of the fixed part of the sensor, and preferably in contact with the rotary part, constitutes a new mechanical reference close to the sensor. The invention provides accurate and robust position information independently of mechanical and magnetic disturbances to which the shaft may be subjected.

Rotating electrical machine including a magnetic position sensor

The present invention is an electrical machine comprising a rotor () and a stator () having radial passages () arranged circumferentially along the stator, magnetic-flux generators () housed in the passages, and a stator bearing () containing the rotor. According to the invention, the radial passages () comprise fluid-circulation galleries () facing the magnetic-flux generators ().

Rotary electric machine comprising a rotor and a stator for the passage of a fluid

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.

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Valpelline, Italy

Luca Favre