Novick, Kim & Lee, PLLC
Modular multilevel converter
A Modular Multilevel Converter (MMC) includes multiple sub-modules connected in series with each other and a controller for controlling on/off switching of the sub-modules, in which the multiple sub-modules include N sub-modules that participate in the operation of the MMC and M redundant sub-modules for replacing at least one N sub-modules when the at least one N sub-modules fail, and the controller switches on a sub-module if a carrier signal assigned thereto is higher than a preset reference signal, and switches off the sub-module if the carrier signal assigned thereto is lower than the preset reference signal.
HYOSUNG HEAVY INDSTRIES CORPORATION
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Jung-Soo Jong-Yun June-Sung Doo-Young Hong-Ju
Park Choi Kim Lee Jung