| 摘要 |
A DC/AC converter for converting DC power of a number of inductively connected generators (120) into power grid conformal AC power for feeding into a connected power grid with a number of phases, each phase (L, L1, L2, L3) being assigned to a generator, comprises an intermediate circuit with intermediate circuit capacitor (100, 110) and a positive and a negative intermediate circuit connection (170, 175) and for each phase (L, L1, L2, L3) of the power grid (740) a bridge (160). Each bridge (160) comprises a first switch (211, 231) that forms a switchable connecting path between the positive intermediate circuit connection (170) and a phase terminal (180), a second switch (212, 232) that forms a switchable connecting path between a positive generator terminal (150) of the generator (120) assigned to the phase and the phase terminal(180), a third switch (213, 233) that forms a switchable connecting path between a negative generator terminal (155) of the generator (120) assigned to the phase and the phase terminal (180), and a fourth switch (214, 234) that forms a switchable connecting path between the negative intermediate circuit connection (175) and the phase terminal (180). Furthermore, the bridge (160) comprises a first diode (221) that connects the positive intermediate circuit connection (170) to the positive generator terminal (150) of the generator (120) assigned to the phase, and a fourth diode (224) that connects the negative intermediate circuit connection (175) to the negative generator terminal (155) of the generator (120) assigned to the phase. An operating method for a DC/AC converter is likewise disclosed. The DC/AC converter can be part of a power generation plant. |
