Device for feeding a charge including integrated energy storage

The feeding device enables a charge (1) to be fed with relatively weak medium power on the one hand, and strong power points on the other, due to energy storage condensers (21) placed in a series. Each of said energy storage condensers (21) is linked to an DC/DC converter (20, 200), with control methods (5) being provided to equalize the power at the condenser terminals in addition to the power delivered by each one.