A HIGH VOLTAGE DIRECT CURRENT, HVDC, CONVERTER AND A METHOD FOR HANDLING A FAULT IN SUCH CONVERTER

A method for handling a fault in a High Voltage Direct Current, HVDC, converter () is provided. The method comprises operating a switch arrangement () of a plurality of cells () operating in an active mode so as to convert High Voltage Alternating Current, HVAC, to HVDC or HVDC to HVAC, while arranging the switch arrangement of each of the cells operating in the inactive mode to bypass the energy storage of the cell, in response to an error indication for a cell operating in the active mode, switching the cell from operating in the active mode to operate in the inactive mode, and in response to a recovery indication for the cell operating in the inactive mode, switching the cell from operating in the inactive mode to operate in the active mode.