Novick, Kim & Lee, PLLC
Power supply device for sub-module controller of MMC converter
Disclosed herein is a power supply apparatus for a sub-module controller of a Modular Multilevel Converter (MMC), which supplies driving power to the sub-module controller of an MMC connected to a High Voltage Direct Current (HVDC) system. The power supply apparatus includes a bridge circuit unit including N (N≥2, integer) energy storage units for storing a DC voltage in series-connected sub-modules in the MMC and multiple power semiconductor devices connected in parallel with the N energy storage units in a form of a bridge; and a DC/DC converter for converting a voltage output from output terminals formed between both ends of n (1≤n<N) series-connected energy storage units, among the N energy storage units, into a low voltage and supplying the low voltage to the sub-module controller.
HYOSUNG HEAVY INDUSTRIES CORPORATION
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Hong-Ju June-Sung Doo-Young Jong-Yun Jung-Soo
Jung Kim Lee Choi Park