| 摘要 |
The invention specifies a switchgear cell having a first energy store (2) and a second energy store (3) connected in series therewith, having a first, second, third and fourth power semiconductor switch (S1, S2, S3, S4), which are connected in series, wherein the first, second, third and fourth power semiconductor switch (S1, S2, S3, S4) are in each case one drivable bidirectional power semiconductor switch with a controlled unidirectional current-conducting direction. The first power semiconductor switch (S1) is connected to the first energy store (2), and the fourth power semiconductor switch (S4) is connected to the second energy store (3). A third energy store (4) is connected to the junction between the first and the second power semiconductor switch (S2) and the junction between the third and the fourth power semiconductor switch (S4). In order to implement a simple, robust and compact converter circuit for switching a large number of voltage levels, in the switchgear cell (1) a switching element with a controlled bidirectional current-conducting direction (A) is connected directly to the junction between the second and the third power semiconductor switches (S2, S3) and directly to the junction between the first energy store (2) and the second energy store (3). Furthermore, a converter circuit having such a switchgear cell is specified. |
