Converter controlDC-DC modular multilevel converterHVDC convertermodular multilevel DC converter (M2DC)MMCThe modular multilevel DC converter (M2DC) exploits the interleaving between the three legs of an MMC to realize a promising uninsulated DC/DC converter to interconnect HVDC grids. This paper ...
DC MMCDC-DC MMC convertermodular multilevel converterMMChigh voltage direct currentHVDCDC grid converterThis paper presents the modelling of the DC–DC multilevel modular converter (DC–DC MMC) with half-bridge sub-modules and the control based on the inversion of its model. The DC–DC MMC ...
This paper proposes a tailored fault-tolerant operation strategy for the dc/dc modular multilevel converter (MMC) in the case of submodules (SMs) faults. The proposed strategy utilizes the unique characteristics of the dc/dc MMC to make the post-fault operation possible without the need of add...
This paper proposes a new control structure to operate a split-battery energy storage system (sBESS) based on the modular multilevel converter (MMC) in case of multiple module faults. Energy can be shifted independently between the arms to achieve an equal power draw from all batteries and an...
At present, on the small signal modeling of the modular multilevel converter(MMC), the internal dynamics including the sub-module capacitor voltage fluctuations, the inner loop current, the loop current controller are often neglected, thus simplifying the state-space model, but bringing in some ...
This paper discusses the modular multilevel cascade converter (MMCC) family based on cascade connection of multiple bidirectional chopper cells or single-phase full-bridge cells. The MMCC family is classified from circuit configuration as follows: the single-star bridge cells (SSBC); the single-del...
Real-time simulation of modular multilevel converters (MMCs) is challenging due to their complex structure consisting of a large number of submodules (SMs). In the literature, the computational speed is emphasized for MMC modeling in real-time simulation, while accurate and detailed information of...
Modular multilevel converters, based on cascading of halfbridge converter cells, can combine low switching frequency with low harmonic interference. They can be designed for high operating voltages without direct series connection of semiconductor elements. This has led to a rapid adoption within high-...
This paper reports a comparison study of different carrier-based PWM techniques applied to the modular multilevel converter. Phase-disposition PWM (PD-PWM) and phase-shifted pulse-width modulation (PS-PWM) with non-interleaving and interleaving are considered in this study. In PS-PWM, two cases...
This paper investigates the applicability of averaged-value models (AVMs) for modular multilevel converters (MMCs) operating in a voltage-sourced converter-based-high-voltage dc (VSC-HVDC) grid. The AVM models are benchmarked by comparison with a detailed electromagnetic transient model of the grid...