Converters and Semiconductor Circuit Breakers for HVDC and DC grids: Guest Editorial

We are very much thankful to the IET Power Electronics editorial board for instructing this Special Issue on Converters and Semiconductor Circuit Breakers for HVDC and DC grids and we are glad to be contributing as editors. We are grateful to editors Prof Volker Pickert and Dr Mohamed Dahidah for their support, to all the reviewers, and to the IET editorial office, who helped build this Special Issue into its final shape.

In the final version for publishing, 16 papers have been selected for this journal, consisting of: six papers related to MMC converters, four papers dealing with DC Circuit breakers, four papers related to DC/DC converters and two papers on the topic of DC grid or multiterminal HVDC. It is good to see that industry participates in five of the selected papers while one paper has lead authors from industry. Two major manufactures (ALSTOM and SIEMENS) have contributed in the articles on the DC CB topic, and also two transmission system operators, RTE France and SSE Scotland are associated with papers dealing with DC CB and high power DC/DC converters.