System with orbiting axis for converting energy

A system with orbiting axis for converting energy from a fluid comprising:

• at least an inner transmission shaft and at least an output transmission shaft;
• at least one support element;
• at least one sectorial blade configured to exchange energy with the fluid, the at least one sectorial blade being connected to said at least one inner transmission shaft by the at least one support element which is pivotable such that said at least one sectorial blade is configured to rotate around an axis of the inner transmission shaft;
• at least one transmission group for synchronization and transmission of rotation-oscillation movement to said at least one blade, the at least one transmission group comprising:
• the inner transmission shaft and the output transmission shaft;
• at least one pin;
• first rotation means rigidly connected, at a first extremity, with the support element by the at least one pin and, at a second extremity, to one of the transmission shafts, the first rotation means hinging the at least one support element to the at least one inner transmission shaft, each blade being configured to perform the rotation-oscillation movement integrally to the support element and resulting always oriented in a direction of the fluid.