Patent attributes
A matrix converter for the conversion of a polyphase alternating current into a desired alternating output current in which m phases of the polyphase alternating current are converted into alternating output current with n (n<m) phases of a load by a multiple number of controllable bidirectional switches. The converter includes at least one stage, and in that at least one stage of the converter each phase of the polyphase alternating current is controlled by a controllable bidirectional switch. The at least one stage of the converter is formed by a two-dimensional array of stage stacks of switching elements which stage stacks are arranged substantially parallel to each other along a stack direction perpendicular to the plane of the matrix converter, and wherein the input of the stage stacks is provided by bus bars located on one side of the stage stacks.