Development of IGCT-MMC Converter Valve for±525 kV/3000 MW Flexible DC Transmission
The IGCT-based modular multilevel commutator(MMC)for flexible DC transmission has the potential advantages of low cost,low loss,and high reliability,and has a broad application prospect in future applications such as large-scale new energy power delivery on land and grid-connection of wind power in deep and distant oceans.This paper performs a comparative analysis on the technological performance of two types of power devices,namely,integrated gate commutator thyristor(IGCT),and rim-gate bipolar transistor(IGBT),on the basis of which the product design of±525 kV/3000 MW flexible DC transmission IGCT-MMC converter valve is outlined.According to IEC 62501 standard,the third-party witness test of IGCT-MMC converter valve has been carried out,whose results show the competent technological performance of the developed IGCT-MMC converter valve.
flexible DC transmissionintegrated gate commutated thyristorconverter valve
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