An MMC-based full-power variable-speed pumped storage system
A pumped storage, full power technology, applied in the direction of reducing/preventing power oscillation, adjusting/eliminating/compensating reactive power, reactive power compensation, etc. Small and other problems, achieve the effect of low trigger frequency, reduce harmonic content, and improve power quality
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[0018] The present invention provides a full-power variable-speed pumped storage system based on MMC. The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] Such as figure 1 As shown, the embodiment of the full-power variable-speed pumped storage system based on MMC. The system includes generator stator, full-power converter, transformer and power grid, which are connected in series through AC cables; the full-power converter is divided into It consists of two parts, the grid-side converter and the machine-side converter, which are serially connected in series using AC cables;
[0020] Full size converter (Full size converter, FSC) is a converter (frequency converter) with the same power as the generator connected between the generator stator and the grid; the converter adopts a modular multi-level converter The topology of MMC (ModularMulti-level Converter) is used to realize the power ...
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