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A study on dc fault handling of dc-dc converter based on series and parallel connected DABs in MVdc applications...

by Sreenivasa S Jaldanki, Rajendra Prasad Kandula, Madhu Sudhan Chinthavali
Publication Type
Conference Paper
Book Title
2025 IEEE Power & Energy Society General Meeting (PESGM)
Publication Date
Page Numbers
1 to 5
Publisher Location
New Jersey, United States of America
Conference Name
IEEE Power and Energy Society General Meeting 2025 (PESGM)
Conference Location
Austin, Texas, United States of America
Conference Sponsor
IEEE
Conference Date
-

With the increase of direct current (dc) based power generating stations and loads, multi-terminal medium voltage dc (MT-MVdc) systems are gaining popularity. The dc sources and loads are interfaced with the MT-MVdc systems using series and parallel connected dual-active-bridge (SP-DAB). In this paper, the dc fault ride through procedure of SP-DAB meant for MT-MVdc application is analyzed. The need for dc breaker (DCB) under the requirements of MT-MVdc is established through EMT simulation studies. It is shown that an additional dc filter capacitor is essential at the output terminals of the SP-DAB to ride through the dc faults.