| 摘要 |
According to the invention, a switching unit (a bridge switch) of a converter module (301) is replaced by a bidirectional switch, with the result that the converter module can be blocked for currents of different polarities. Thus it is advantageously possible to prevent, for example, a short-circuit in the DC system reacting back on the AC system. One advantage of the asymmetric implementation in this connection is energy efficiency. The invention can be used, for example, in high-voltage DC transmission, in particular in multilevel converters. |
