Moving Magnet Technologies

Moving Magnet Technologies (mmt)

Mmt Sa

Mmt Ag

Stéphane Tavernier

Pierre Gandel

Gaël Andrieux

Stéphane Biwersi

Arnaud Hyppias

Guillaume Callerant

Bastien Dolisy

David Girardin

Dominique De Oliveira

Mathieu Aubertin

The disclosure relates to a rotor for an electrical machine having internal permanent magnets including a yoke consisting of a stack of sheets defining a plurality of recesses for receiving parallelepipedal permanent magnets, the recesses being surrounded by magnetically saturated external transverse isthmuses, by radial isthmuses, lateral isthmuses and oblique isthmuses, wherein the magnets are assembled in pairs of magnets magnetized in the same direction and perpendicular to the radial direction of the radial isthmuses arranged between the coupled magnets, the radial isthmuses having a thickness of less than 5% of the diameter of the rotor, and the perimeter of the cross section of the rotor is formed by a succession of curved profiles, between two consecutive pairs of magnets, and tangential linear profiles at the external transverse isthmuses. The disclosure also relates to the application of such a rotor for creating a motor, in particular a motor for a turbo compressor, or an electrical generator.

Rotor with permanent magnets forming a portion of a rotor core

The present disclosure relates to a mono- or polyphase electric motor including a stator carrying at least three coils and consisting of 12&#xd7;N straight teeth extending radially, N being an integer greater than or equal to 1, and of an equal peak divergence alpha, measured at their end from the center of the motor, and a rotor exhibiting P pairs of magnetized poles such that P=5+2&#xd7;R, P being a non-multiple of three, R being an integer greater than or equal to 0, alpha lying between 360&#xb0;(12&#xd7;N)/3 and 360&#xb0;(12&#xd7;N)/2.

Optimized electric motor with narrow teeth

Growing community of inventors

Besançon, France

Stéphane Tavernier