Conversion stage, electric converter including such a conversion stage, device for converting an ac current into dc current including such a converter, terminal for recharging an electric battery including such a converter or conversion device

An electric conversion stage, capable of being connected on one hand to intermediate terminals of a DC voltage electric bus, and on the other hand to output terminals, the conversion stage comprising:

• P switching branches, P being greater than or equal to 2, the switching branches being connected in parallel between the intermediate terminals, each switching branch including first and second controllable electronic switches connected serially and connected to each other by a midpoint, the first switch being connected between the first intermediate terminal and the corresponding midpoint, and the second switch being connected between the second intermediate terminal and the corresponding midpoint, each switch including a semiconductor element and a diode connected in anti-parallel to the semiconductor element, each semiconductor element being switchable between an on state and an off state,
• control means for controlling the electronic switches according to a control law,
• wherein the conversion stage also comprises a capacitor connected between the two output terminals and, for each switching branch, an electromagnetic coil connected between a terminal of the capacitor and the midpoint of the corresponding switching branch, and
• wherein the control law is selected from among a first control law and a second control law, the first control law being such that the semiconductor element of each first switch is always off, and the second control law being such that the semiconductor element of each second switch is always off.