Fault protection for voltage source converters

Francisco Chivite-Zabalza (Inventor), David Trainer (Inventor), Jonathan Nicholls (Inventor), Konstantin Vershinin (Inventor), Ikenna EFIKA (Inventor), Francisco Moreno (Inventor), John Outram (Inventor), Rajseker Ginnareddy (Inventor)

Research output: Patent

Abstract

Fault protection of a voltage source converter (VSO) comprising a chain-link circuit 103 in series with a director switch 104. The chain-link circuit comprises a plurality of cells 106, each comprising an energy storage element, a plurality of cell switching elements 109 such that the energy storage element can be selectively connected in series between terminals of the cell or bypassed, and a cell switching element controller 501, 502. The director switch comprises a plurality of director switch units 202, each having a director switching element 110 and a director switch unit controller 503. Each cell switching element controller monitors for a fault current and, if detected, turns-off its associated cell switching element and reports a fault event to a fault controller 504. Each director switch unit controller also monitors for a fault current and, if detected, reports a fault event to the fault controller, but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for any reports of fault events and, in the event of a fault occurring, orders all of the cell switching elements of at least some of the plurality of cells to turn-off.
Original languageEnglish
Patent numberWO2017148980A1
IPCH02J3/36,H02M1/32,H02M7/483
Priority date3/03/16
Filing date1/03/17
Publication statusPublished - 8 Sep 2017

Keywords

  • semiconductor switching assembly
  • cell switching element
  • fault protection

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  • 中华人民共和国国家知识产权局

    Chivite-Zabalza, F., Trainer, D., Nicholls, J., Vershinin, K., EFIKA, I., Moreno, F., Outram, J. & Ginnareddy, R., 11 Aug 2020, IPC No. H02J3/36, H02M1/32, H02M7/483, Patent No. CN108781035B, 1 Mar 2017, Priority date 3 Mar 2016, Priority No. GB1603733.5A

    Research output: Patent

    Open Access
  • Fault protection for voltage source converters

    Chivite-Zabalza, F., Trainer, D., Nicholls, J., Vershinin, K., EFIKA, I., Moreno, F., Outram, J. & Ginnareddy, R., 9 Jan 2019, IPC No. H02J3/36, H02M1/32, H02M7/483, Patent No. EP3424137A1, 1 Mar 2017, Priority date 3 Mar 2016, Priority No. GB1603733.5A

    Research output: Patent

  • Fault protection for voltage source converters

    Chivite-Zabalza, F., Trainer, D., Nicholls, J., Vershinin, K., EFIKA, I., Moreno, F., Outram, J. & Ginnareddy, R., 24 Jan 2019, IPC No. H02J3/36, H02J7/34, H02M1/34, H02M7/797, H02M1/32, H02M7/483, H02M7/49, Patent No. US10560014B2, 1 Mar 2017, Priority date 3 Mar 2016, Priority No. GB1603733.5A

    Research output: Patent

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