Embodiments of present disclosure relate to a multi-level power convertor, a multi-phase power converting circuit and a method for a multi-level power convertor. The multi-level power convertor comprises a DC port; an AC port; a first power converting unit coupled to the DC port and comprising a first AC terminal adapted to provide a first plurality of voltage levels; a second power converting unit coupled to the DC port and comprising a second AC terminal adapted to provide a second plurality of voltage levels of the same number as the first plurality of voltage levels, wherein the second plurality of voltage levels are phase-shifted by 180 degrees with respect to the first plurality of voltage levels; a coupling inductor comprising first and second windings with the same number of turns, wherein the first winding comprises a first end coupled to the first AC terminal and a second end, the second winding comprises a third end coupled to the second AC terminal and a fourth end, and the second end of the first winding and the third end of the second winding are namesake ends of the first and second windings; and an inductive filtering unit arranged between the AC port and the second and fourth ends of the first and second windings.