A DC Solid-State Transformer With DC Fault Ride-Through Capability

Haoyuan Weng, Jinghang Li, Keyan Shi, Min Chen, Philip T. Krein, Dehong Xu

Research output: Contribution to journalArticlepeer-review


This article investigates a dc solid-state transformer (DCSST) with dc fault ride-through (FRT) capability for medium-voltage dc (MVDC) systems. The FRT requirement for DCSST in dc grid is investigated. Short-circuit fault clearance on the medium-voltage (MV) side is realized by introducing full-bridge converters with cascaded dc converter modules on the MV side of the DCSST. The FRT strategy under typical voltage sags is analyzed. Factors affecting the fault clearing and system recovery are considered, including the number of full-bridge converters, the values of dc inductance, and the dc-link bus voltage. The concept is verified with both simulations and experiments.

Original languageEnglish (US)
Pages (from-to)3617-3630
Number of pages14
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Issue number4
StatePublished - Aug 1 2022
Externally publishedYes


  • DC fault ride-through (FRT)
  • dc solid-state transformer
  • medium-voltage dc (MVDC) system
  • short-circuit fault

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'A DC Solid-State Transformer With DC Fault Ride-Through Capability'. Together they form a unique fingerprint.

Cite this