Multi-port energy router, basic regulation and control unit and control method

The invention discloses a multi-port energy router, a low-voltage distributed renewable energy basic regulation and control unit and a control method of the low-voltage distributed renewable energy basic regulation and control unit. The multi-port energy router comprises a first-stage interconnection converter and a second-stage interconnection converter, one end of the first interconnection converter is mounted on an alternating current bus, the other end of the first interconnection converter is mounted on a first direct current bus, one end of the second interconnection converter is mounted on the first direct current bus, and the other end of the second interconnection converter is mounted on a second direct current bus; at least one of a renewable energy input interface, a load output interface and a bidirectional energy storage interface is mounted on the alternating current bus, the first direct current bus and the second direct current bus respectively; the renewable energy input interface comprises a