Abstract: A reversible matrix converter circuit is provided with n levels per phase including n conversion arms exhibiting on one side n ends for generating or receiving respectively n intermediate DC voltage levels, and exhibiting on another side n ends linked at a common point of AC signal input or output. The circuit includes: —two external arms linked respectively to the highest level of positive voltage and to the lowest level of negative voltage, these two external arms each having a single IGBT transistor or two power transistors, linked by their emitter, —two IGBT power transistors, linked in series by their emitter on each of the n?1 internal arms, —filtering capacitors disposed respectively between the n intermediate voltage levels.

Abstract: A reversible matrix converter circuit is provided with n levels per phase including n conversion arms exhibiting on one side n ends for generating or receiving respectively n intermediate DC voltage levels, and exhibiting on another side n ends linked at a common point of AC signal input or output. The circuit includes: —two external arms linked respectively to the highest level of positive voltage and to the lowest level of negative voltage, these two external arms each having a single IGBT transistor or two power transistors, linked by their emitter, —two IGBT power transistors, linked in series by their emitter on each of the n-1 internal arms, —filtering capacitors disposed respectively between the n intermediate voltage levels.

Abstract: A matrix converter circuit with n symmetrical levels per phase including n conversion arms respectively supplied with n intermediate symmetrical voltage levels and connected at the output thereof to a common point generating an output current, characterized in that it includes: two external arms supplied respectively with the highest level of positive voltage and with the lowest level of negative voltage, these two external arms each including a single IGBT transistor, and two IGBT transistors connected in series by their emitter on each of the n?2 internal arms.