Energy Control of Modular Multilevel Converters in MTDC Grids for Wind Power Integration
Energy Control of Modular Multilevel Converters
in MTDC Grids for Wind Power Integration
The role of Modular Multilevel Converters (MMCs) in HVDC grid greatly differs depending on whether it is an offshore or an onshore station. From the common point in their control schemes, an unexploited ability of the MMC—the controllability of the internally stored energy—is identified in both offshore and onshore applications. The virtual capacitor control, previously proposed by the authors, makes use of this degree of freedom to provide energy contribution to the DC grid. The impact of this control is demonstrated by time-domain simulations of a five-terminal HVDC grid.
K. SHINODA, R. RAMACHANDRAN, A. BENCHAIB, J. DAI, B. FRANCOIS, S. BACHA and X. GUILLAUD
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