Ifp Energies Nouvelles

Mavel S.r.l.

Mavel Edt S.p.a.

Ipp Energies Nouvelles

Davide Bettoni

Wissam Dib

Luca Favre

Denny Chiono

Julien Boisson

Fabrice Le Berr

Thomas Valin

Benjamin Gaussens

Misa Milosavljevic

Abdenour Abdelli

Rinato Biglino

Marco Francessetti

Andrea Bertoldo

Giorgio Stirano

Fabien Desarnaud

Marco Francesetti

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

The present invention is a power module for a system for converting a direct electrical power into a three-phase electrical power. The power module according to the invention comprises two inputs (E, E), an output (S), two switches (), two diodes (D), and two capacitors (Cs, Cov) and to a conversion system comprising such a power module.

Regenerative undeland snubber circuit for half-arm of an inverter

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 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 a system for converting a direct electrical power into alternating electrical power. The conversion system comprises an assembly on a printed circuit board () of power modules (), an electrical energy recovery module (') and a coil and the present invention also relates to a method for assembling the conversion system, and a motor system comprising the conversion system.

Modular system for converting a DC electrical power into three-phase electrical power and method the same

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 electrical machine comprising a stator and a rotor (), with rotor being formed with a rotor body () from a stack of laminations () placed on a rotor shaft (). According to the invention, the rotor comprises at least one cavity () for receiving at least one balance weight () for the dynamic balancing of the said rotor.

Electric machine and method for dynamically balancing the rotor of said electric machine

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.

Electric machine comprising a stator provided with an inner tubular sleeve

The present invention relates to a system for the conversion of DC electric power into three-phase electric power comprising three commutation arms (A, B, C), a modulation circuit, an electrical energy recovery module () and filtering means (). The filtering means () comprise a capacitor (Cf) and an assembly formed from a filtering coil (Lf) connected in series with a diode (D).

System and method for the conversion of DC electric power into three-phase AC electric power, with filtering means

The present invention relates to a DC/AC converter, comprising switching arms, a voltage and current variation modulation circuit, and an electrical energy harvester module. The energy recovery module is linked to the switching arms and to the modulation circuit.

System for converting a DC electric power into an AC electric power with an energy recovery module

An electric machine includes an alternating current electric motor comprising two semi-windings and an inverter comprising at least two inverter branches which are electrically connected each one to a respective semi-winding. The machine also includes a control unit which provides respective control signals to the two inverter branches so that they induce two alternating currents of frequency in the respective semi-windings. The control signals of the two inverter branches have a frequency smaller than the frequency and are also reciprocally out of phase by 180&#xb0; relative to the frequency. This allows reducing ripples of the overall alternating current resulting from the sum of the two alternating currents provided by the two semi-windings.

Electric machine comprising an alternating current electric motor and an inverter

A method for manufacturing a rotor with permanent magnets may include providing a central core with a desired cross-section; providing a plurality of ferromagnetic discs having a hole shaped in a complementary manner to the cross-section of the central core; stacking up the ferromagnetic discs around the central core to form a cylindrical structure with a longitudinal cavity, wherein the longitudinal cavity is formed by the holes of the stacked-up ferromagnetic discs; integrally blocking together the stacked-up ferromagnetic discs; and removing the central core. A rotor may be manufactured by the method. The rotor may be used in an electric motor.

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Davide Bettoni