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  • HVDC Shunt Tap Based on Ser...
    Elserougi, A; Massoud, A; Abdel-Khalik, A; Ahmed, S

    7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), 2014
    Conference Proceeding

    Conventionally, tapping-off a small amount of power from an HVDC transmission line to a three-phase local network can be achieved using a DC-to-AC voltage source converter (VSC) followed by a step down transformer. In order to obtain the high-voltage ratings required in the HVDC systems, semiconductor devices should be connected in series. Hence, careful design to ensure dynamic voltage sharing between switches is necessary. In this paper, DC-AC multi-module VSCs (series-input parallel-output) along with an input-voltage balancing technique are employed as an alternative solution. The advantages of the proposed architecture against conventional system are also highlighted. A Simulation study is carried out to show the effectiveness of the proposed architecture and to validate the proposed voltage balancing technique.