Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 2: Modular multilevel converters— 115 стр.
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Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems -- Part 2: Modular multilevel converters (IEC 62751-2:2014) (english version)