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This paper discusses a new transformerless shunt static compensator (STATCOM) based on the extended modular multilevel converter (EMMC), to achieve higher performance in a medium-voltage large-current network. It introduces an appropriate control algorithm based on a phase-shifted carrier modulation strategy, to ensure the source-end three-phase currents are sinusoidal and balanced, balancing the...
To achieve higher performance in a distorted and unbalanced medium-voltage large-current system, a new shunt compensator is presented based on half-bridge cascaded converters (HBCC). Then, the transformerless HBCC based STATCOM can be controlled for various purposes such as reactive power of STATCOM, simultaneous harmonic cancellation and load balancing procedure. Compared to the conventional modular...
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