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The requirement of a large number of sizeable capacitors in traditional modular multilevel converter (MMC) submodules is seen as a major barrier hampering its widespread use in medium-voltage applications. To reduce the value of capacitance, this paper presents a modified MMC (M-MMC) topology, which offers inherent alleviated capacitor voltage fluctuations compared with traditional MMC. Its operating...
This paper proposes a new hybrid-source switched-capacitor multilevel converter for electric vehicles. The key is to integrate the battery-ultracapacitor hybrid power source into the switched-capacitor multilevel converter. Hence, the problem of high capacitive charging current of the switched-capacitor multilevel converter can be solved, and the dynamic voltage equalization of battery packs can be...
This paper investigates feasible topologies of VSC-HVDC system for interconnecting large-scale off-shore wind farms. The corresponding control strategy is developed for coordination and control of the corresponding VSC-HVDC systems. A case of 5-terminal VSC-HVDC system is developed in MATLAB/ SIMULINK to demonstrate the validity of the proposed scheme. The proposed scheme may enable optimal integration...
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