DIN EN 62751-2/A1 VDE 0553-751-2/A1:2017-10

This International Standard gives the detailed method to be adopted for calculating the power losses in the valves for an HVDC system based on the 'Modular Multi-Level Converter', where each valve in the converter consists of a number of self-contained, two-terminal controllable voltage sources connected in series. This standard is written mainly for Insulated Gate Bipolar Transistors (IGBTs) but may also be used for guidance in the event that other types of turn-off semiconductor devices are used. This standard does not apply to converter valves for Line-Commutated Converter HVDC systems.