March 2026

Conference Paper

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

By:
Jaldanki, Sreenivasa S; Kandula, Rajendra Prasad ; Chinthavali, Madhu Sudhan
Page Number:
1-5
Book Title:
2025 IEEE Power & Energy Society General Meeting (PESGM)
Publication Date:
March 12, 2026
Publisher Location:
IEEE, 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

Abstract

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.