Ifp Energies Nouvelles

Mavel S.r.l.

Mavel Edt S.p.a.

Wissam Dib

Davide Bettoni

Luca Favre

Denny Chiono

Julien Boisson

Philippe Moulin

Alexandre Chasse

Antonio Sciarretta

Domenico Di Domenico

Thomas Valin

Benjamin Gaussens

Fabien Vidal-Naquet

Nicolas Henwood

Fabien Desarnaud

Emmanuel Kuentzmann

Marco Francessetti

Rinato Biglino

Abdenour Abdelli

The object of the invention is a method of controlling a permanent-magnet synchronous or synchro-reluctant three-phase rotary machine (), comprising the following steps: measuring a current (i, i, i) flowing through each phase of a stator of rotary machine (); first calculating, by use of a single proportional-integral controller, a switching control signal for controlling an inverter (), according to each measured current (i, i, i), and of a target value (T) of a mechanical torque provided by the rotary machine () or of a target value of an angular speed of a rotor of rotary machine () in relation to the stator wherein the inverter () is configured to convey electrical energy between a continuous electrical energy source () and each phase of the stator of rotary machine (); andcontrolling the inverter () by use of the calculated switching control signal.

Control method and associated control system

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 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 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

The invention is a method of determining the position and the speed of the rotor in a synchronous electric machine using a state observer of the currents of the electric machine and the injection of signals. Thus, the invention provides position information which is accurate, notably at low speed, without using a position detector. The invention also is a control method and system for controlling a synchronous electric machine which accounts for the position determined for the rotor.

Method of determining the position and the speed of a rotor in a synchronous electric machine using state observers

The invention relates to a method of determining internal temperatures () (coil and magnet temperatures) in a synchronous electrical machine () using state observers for the resistance of the coils and the magnetic flux of the magnet. The invention also relates to a diagnostic method, a control method and system () for controlling a synchronous electrical machine from the internal temperatures thus determined.

Method and system of internal temperatures determination in a synchronous electrical machine using state observers

The invention relates to a method of determining at least one eco-driving indicator wherein at least a first indicator (IND) is determined as an optimal speed (V) that minimizes the energy consumption. Calculation of optimal speed Vis constrained by measured instant speeds Vat breakpoints of the travel where the driver has to adapt his driving according to conditions external to the travel. Once the eco-driving indicator is determined, it can be displayed (AFF) and/or the vehicle can be controlled (COM) in accordance with the indicator.

Growing community of inventors

Suresnes, France

Wissam Dib