Centre National De La Recherche Scientifique

Ecole Normale Superieure De Cachan (lesir)

Centre National De La Recherche Scientifique-cnrs

Bernard Multon

Jean Lucidarme

Michel Lecrivain

Mohamed Gabsi

Emmanuel Hoang

Abdel Hamid Ben Ahmed

Abdelhamid Ben Ahmed

Eduardo Santander

Laurent Prevond

J&eacute;rome Delamare

Jean-Yves Cognard

Corentin Kerzreho

Pierre-Emmanuel Cavarec

Nicolas Bernard

Marc Antunes Menoita

The invention concerns an electrical machine, whereof the active part includes a global solenoid winding () for each phase and includes, inside said winding(s), a stack of ferromagnetic or non-magnetic parts () and magnetized parts (), the ferromagnetic or non-magnetic parts being provided with passages traversed each by at least one relatively sliding element (), each sliding element constituting a succession of portions alternately magnetic () and non-magnetic (), the passages formed in the ferromagnetic or non-magnetic parts of the stack forming orifices whereof the internal cross-section encloses each time one sliding element, the sliding elements () consisting in rods having each an outer periphery matching the internal cross-section of the traversed orifices.

Linear actuator or generator with rods

The invention concerns a machine forming a motor or generator including a stator and a rotor. The rotor is a passive rotor, consisting of two ferromagnetic discs whereof at least one is toothed. The stator includes a fixed polyphase field coil arranged in an air gap defined by the space provided between the two discs and generating a rotating magnetic field, and a field coil likewise fixed. The invention is applicable to a cylindrical rotary machine or to a machine with linear displacement.

Motor/generator with energized reluctance and coil in the air gap

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

Growing community of inventors

Rennes, France

Bernard Multon