| 摘要 |
<p>The circuit has at least one sub-converter system with sub-converters each connected to a transformer that can be connected to an a.c. supply and to intermediate d.c. circuits. One intermediate d.c. circuit can be connected to a d.c. supply. Configuration switches and an isolation switch are connected between first and second intermediate d.c. circuits. The circuit has at least one sub-converter system (5) with sub-converters (5.1,5.2) each connected to a transformer (7) that can be connected to an alternating supply (2) on the a.c. side and to intermediate d.c. circuits (14.1,14.2) on the d.c. side. One intermediate d.c. circuit can be connected to a d.c. supply (1). Configuration switches (10.1,10.2) are connected between the first connections of the intermediate d.c. circuits and between their second connections and an isolation switch (11) is connected between the second and first connections of the first and second intermediate d.c. circuits. Independent claims are also included for the following: a method of coupling to an electrical supply network.</p> |
