| 摘要 |
<p>A power converter device including a plurality of self-commutated voltage type converters each connected to a common d.c. circuit, a plurality of transformers each having d.c. windings and a.c. windings, each of the d.c. windings being connected to an a.c. output terminal of a respective one of the converters and each of the a.c. windings being connected in series, an a.c. switch through which the serially connected a.c. windings of the transformers are connected to utility power systems, and a d.c. overvoltage suppression means, installed in the common d.c. circuit, wherein the transformers are connected to utility power systems by synchronous making, and the d.c. overvoltage suppression means is connected to the common d.c. circuit when the converters are stopped temporarily.</p> |
