Abstract: 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.

Abstract: The magnetic energy contained in a storage inductance coil is transferred with a high degree of efficiency into a load impedance which forms part of the same circuit. The transfer is performed gradually in a series of transformations of at least one of the circuit elements so that the successive states of the circuit deviate only to a slight extent from positions of balance corresponding to a constant total magnetic energy.