Abstract: An electricity generator that derives energy from a membrane undulating in a longitudinal direction. The generator having electricity generation modules carried on the membrane, each module having a fixed frame, a movable frame, a coil, and at least one permanent magnet carried by one of the frames in order to generate a voltage when the membrane undulates. The fixed frames are connected to the membrane and the movable frames are disposed at a distance from a neutral axis of the membrane so that, when the membrane undulates in the longitudinal direction, the moveable frame of each electricity generation module slides in a rectilinear movement with respect to the fixed frame so as to generate electrical voltages in the coils of each module.

Abstract: A device for recovering energy from a flow of fluid including a support, a flexible membrane, an attachment system for attaching at least a first area of the membrane connecting this first area of the membrane to the support; force transmission means connected to a second area of the membrane remote from the first membrane area, this second area of the membrane being movable with respect to the support. The device includes separation limiting means, adapted to limit the separation of the first area of the membrane from at least a first point of the attachment system and to limit the separation of the second area of the membrane from a second point of the attachment system, these separation limiting means being such that the first and second areas are spaced apart from each other by a minimum distance (Dmin) smaller than the shortest length (Lmin) separating these first and second areas measured along a face of the membrane.