MODULE-SHARED FLEXIBLE LOOP CLOSING CONTROLLER TOPOLOGY FOR POWER GRID

The invention discloses a power network flexible controller topology shared by modules. Each single-phase topology comprises an AC/AC converter including NCHB modules, and an AC/DC module including N−Nfull-bridge rectifiers; the AC input terminals of NCHB modules are connected in series to form an AC port on one side of the AC/AC converter, the AC output terminals of NCHB modules are connected in series to form the AC port on the other side of the AC/AC converter, the AC input terminals of N−Nfull-bridge rectifiers are connected in series to form the AC port of the AC/DC module, the AC port on one side of the AC/AC converter is connected in series with the AC side port of the AC/DC module and then connected to a first AC network nd the AC port on the other side of the AC/AC converter is connected in series with the DC side port of the AC/DC module.