Centre National De La Recherche Scientifique

Ecole Normale Superieure De Cachan (lesir)

Jean Lucidarme

Michel Lecrivain

Mohamed Gabsi

Bernard Multon

Emmanuel Hoang

Eduardo Santander

Abdelhamid Ben Ahmed

Laurent Prevond

Hamid Ben Ahmed

Jean Pouillange

Jean Roche

Roger Guillet

Christian Rioux

A rotating electric machine whereof the rotor includes a magnetic core provided with radial teeth, uniformly distributed at its periphery, annular magnets arranged on either side of the core axial ends and magnetic end flanges pressing the annular magnets against the core, magnetic bars linking the end flanges together, housed in the spaces between the radial teeth, additional magnets being interposed between each of the bars and at least the side walls of the core radial teeth defining the spaces. The stator includes a magnetic core, excitation coils arranged on either side of the core, a stator coil wound on the core and a magnetic ring in contact with the core and provided with radial rims co-operating with the axial rims of the rotor end flanges to form paths for the return flux.

Rotating electric machine with improved double excitation

A double excitation, rotating electrical machine mounted on a shaft includes a rotor whereof the magnetic circuit carries at least one excitation element and a stator whereof the magnetic circuit carries a stator coil. The at least one excitation element includes at least a ring-shaped magnet associated with at least two disks each provided with radial teeth evenly distributed at their periphery and at least a ring-shaped part provided with slots in each of which is engaged contactless, one tooth of at least one toothed disk, and the stator magnetic circuit includes an even number, not less than two, of ring-shaped elements of magnetic circuit, at least an excitation stator coil being arranged between at least two neighboring elements among the magnetic circuit elements.

Electrical machine with double excitation

A rotating electrical machine including a rotor (2), the magnetic circuit of which carries excitation members, and a stator (16), the magnetic circuit of which carries a stator coil. The magnetic circuit of the rotor includes a shaft (1) on which are mounted end flanges (3) and at least one toothed disk (4) disposed between the end flanges, the teeth of the toothed disk being regularly spaced at its periphery, and at least one annular member (9) mounted on the end flanges and having slots (10) regularly distributed at its periphery and in each of which is engaged one tooth of at least one toothed disk. The end flanges and the toothed disk are spaced apart by gaps in which excitation members (14, 15) are accommodated.

Rotating electrical machine with excitation coils, by magnets or with

Electromechanical converter device, producing linear motion

A polyphase variable reluctance electric motor is provided which may be of the linear or rotary type. It has a stator with m windings (34, 36, 38) creating a magnetic flux in the direction of movement of the mobile core and a source (40, 42) for energizing the windings with a differential phase shift, each winding being associated with its own ferromagnetic circuit completed through the core, characterized in that the core has several ferromagnetic first blades (18) parallel to the direction of movement and each split up in the longitudinal direction into first studs (20) having a given pitch p and in that the ferromagnetic circuit of each winding includes interleaved second blades alternating with those of the core and split up into second studs (14) at the same pitch p.

Polyphase variable reluctance motor

Growing community of inventors

Ste Genevieve des Bois, France

Jean Lucidarme