Miniaturized high-power traction auxiliary integrated converter based on frame control topology

The utility model discloses a miniaturized high-power traction auxiliary integrated current transformer based on frame control topology, which is characterized in that a main circuit consists of a traction current transformer and an auxiliary current transformer, and comprises the traction current transformer, the auxiliary current transformer and a cooling system thereof; wherein power grid voltage enters the traction converter after being reduced by the traction transformer, the auxiliary converter takes power from an intermediate loop of the traction converter, and power frequency isolationis adopted for output. According to the utility model, on the premise that the running speed grade of the whole vehicle is not changed; reducing intermediate voltage levels, reducing device voltage levels, a topology circuit form of frame control is adopted. A plurality of traction motors are controlled, and a traction converter, an auxiliary converter and a cooling device are integrated in one box body, so that the requ