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)
Voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) power transmission - Electrical testing (IEC 62501:2009 + A1:2014 + A2:2017) (english version)
