| 摘要 |
A device for generating a one-phase alternating voltage comprises a first converter (17) connected to an alternating voltage source for rectifying an alternating voltage and a second converter (28) connected to the first converter through a direct voltage intermediate link (23) and adapted to convert the direct voltage to a one-phase alternating voltage. The direct voltage intermediate link has a symmetry midpoint (24) with respect to voltage symmetrically connected to the second converter. The second converter has only one phase leg (29) with current valves connected in series and an output for the one-phase alternating voltage connected to a midpoint between the current valves. A line connected to said midpoint output is connected to a grounded return feeder (33) for current to a load connectable to the one-phase alternating voltage and this return feeder is connected to said symmetry midpoint of the direct voltage intermediate link. |
