Analysis of a High-Power, Resonant DC-DC converter for DC Wind Turbines

Research output: Contribution to journalJournal articleResearchpeer-review

36 Citations (Scopus)
768 Downloads (Pure)


This paper is introducing a new method of operation for a series resonant converter, with intended application in megawatt high-voltage DC wind turbines. Compared to a frequency controlled series resonant converter operated in sub resonant mode, the method (entitled pulse removal technique) allows the design of the medium frequency transformer for highest switching frequency, while being operated at lower frequency without saturation. The main focus of this paper is to identify and analyse the operating modes of the converter with pulse removal technique. With the use of variable frequency and variable phase displacement in sub resonant mode, the new method of operation promises transformer size reduction and facilitates soft-switching transition of the IGBTs and line frequency diodes on rectifier side. Four modes of operation are identified, while equations for output power, voltage and current stress are identified. Experimental results are concluded on a 1 kW, 250V / 500V prototype.
Original languageEnglish
JournalI E E E Transactions on Power Electronics
Issue number9
Pages (from-to)7438-7454
Number of pages17
Publication statusPublished - Sept 2018


  • High voltage (HV) converter
  • medium frequency transformer
  • medium voltage dc (MVDC)
  • offshore wind farm
  • resonant converter


Dive into the research topics of 'Analysis of a High-Power, Resonant DC-DC converter for DC Wind Turbines'. Together they form a unique fingerprint.

Cite this