DC/DC converter for high power DC grids

Ahmed Adel Hassan Hassanein Aboushady (Inventor), Khaled Hani Khaled Ahmed (Inventor)

Research output: Patent

Abstract

The present invention relates to a DC/DC converter which comprises a first bridge (Bridge 1) for connection via an inductor (L1) to a first DC power source (V1) and a second bridge (Bridge 2) for connection via an inductor (L2) to a second DC power source (V2). An AC transformer connecting the first and second bridges. The first bridge has a first branch having a pair of bi-directional switches, each including at least one IGBT semiconductor element, connected across the first power source and to a first terminal of the primary winding (Lac1) of the AC transformer, and a second branch having a pair of bi-directional switches, each including at least one IGBT semiconductor element, connected across the first power source and to a second terminal of the primary winding (Lac1) of the AC transformer. The second bridge has a first branch having a pair of bi-directional switches, each including at least one IGBT semiconductor element, connected across the second power source and to a first terminal of the secondary winding (Lac2) of the AC transformer, and a second branch having a pair of bi- directional switches, each including at least one IGBT semiconductor element, connected across the second power source and to a second terminal of the secondary winding (Lac2) of the AC transformer. Control means (100) provides square wave control signals to the semiconductor elements to enable a switching sequence of the semiconductor elements to provide differing current paths according to the type of first power source and second power source and direction of power transfer.
Original languageEnglish
Patent numberPCT/GB2017/051364
IPCH02M 3/335 (2006.01), H02J 3/36 (2006.01)
Priority date16/05/16
Publication statusPublished - 23 Nov 2017

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Keywords

  • converters
  • high power
  • DC grids

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