Switching cell and multilevel converter comprising it

摘要

The switchgear cell (10) has a group of connection (1) provided with serially connected controllable bidirectional power semiconductor switches (2,3) to which another set of controllable bidirectional power semiconductor switches is connected back-to-back in series. The controllable bidirectional power semiconductor switches (2,4) are connected to the connection point of the capacitors (8,9). An independent claim is included for converter circuit.