Patent ID: 7372178
Filing Date: 2008-05-13
Classification: H02K

Abstract:
1. An electrical machine forming an actuator or generator, comprising an active part that includes one or several phases designed to be connected to an electrical source or load, and a passive part, the active part and passive part being free to move with respect to each other, the active part including a global solenoid winding for each phase and including a stack of ferromagnetic or non-magnetic parts and magnetized parts inside the windings, the magnetized parts having magnetization directions parallel to a relative displacement direction and successive magnetization directions opposite to each other, the ferromagnetic or non-magnetic parts of the stack including passages that each carry at least one element free to slide with respect to the active part, the sliding elements forming the passive part, each sliding element including a succession of alternating magnetic portions and non-magnetic portions arranged to be facing different magnetized or non-magnetized parts of the stack one after the other, such that an alternating magnetic flux is generated in the winding in each phase, characterized in that the passages formed in the ferromagnetic or non-magnetic parts of the stack form orifices with an internal section that surrounds a sliding element, wherein the sliding elements are rods each of which has an external periphery complementary to the internal section of the orifices through which they pass, wherein each rod interacts magnetically with the ferromagnetic or non-magnetic part through which its external periphery passes.