Inductor device

A converter, comprising an inductor device, wherein the inductor device comprises:

• an inductor core;
• and
• one or more inductor windings wound around the inductor core, wherein a part of the one or more inductor windings is at least partially embedded in the inductor core;
• wherein a cross section of the inductor core comprises a four-sided winding window in which the at least partially embedded part of the one or more inductor windings is arranged;
• wherein the inductor core comprises air gaps extending from the four sides of the winding window;
• wherein the winding window comprises at each side of the winding window a respective winding clearance in which no inductor windings are arranged, wherein at least one of the four winding clearances has a non-uniform shape where a distance between a winding outline and a side or edge of the winding window is non-uniform.