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This paper predicts the behavior of a high-switching frequency SiC-based modular power converter based on low-power validation experiments. Switching model of the modular power converter is developed and low-power validation experimental results are provided. Different sources of uncertainties causing the deviation of the modeling and simulation results from the real system behavior are identified,...
This paper presents a power-cell Switching-Cycle Capacitor Voltage Control (SCCVC) approach to control the capacitor voltage ripple for the Modular Multilevel Converters (MMC). The capacitor voltage will be following the reference in one switching cycle by taking advantage of the degree of freedom in the control, the circulating current. The capacitor voltages resonate with the inductors in the converter...
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