Semiconductor switching circuit

Colin Davidson (Inventor), Ikenna EFIKA (Inventor), David Trainer (Inventor)

Research output: Patent

Abstract

SEMICONDUCTOR SWITCHING CIRCUIT A semiconductor switching circuit (10), for use in a HVDC power converter, comprises: a main current branch (12) including a main semiconductor switching element (16) and through which current flows when the main semiconductor switching element (16) is switched on; an auxiliary current branch (14) connected in parallel or inverse-parallel with the main current branch (12), the auxiliary current branch (14) including an auxiliary circuit (18), the auxiliary circuit (18) including a plurality of active auxiliary semiconductor switching elements (22) connected to form an active switching bridge, the auxiliary current branch (14) further including an energy storage device (24) and/or an impedance device (20), the active switching bridge having a control unit (26) operatively connected therewith, the control unit (26) being configured to switch the active switching bridge to connect the auxiliary circuit (18) into and out of circuit with the main current branch (12) and thereby selectively create an alternative current path via the auxiliary current branch (14) whereby current flowing through the main current branch (12) is diverted to flow through the alternative current path to regulate one or more of current flowing through the main semiconductor switching element (16) and voltage appearing across the main semiconductor switching element (16), wherein the control unit (26) is configured to switch the active switching bridge to arrange the alternative current path to selectively pass through the energy storage device (24) and/or impedance device (20). (Figure 1)
Original languageEnglish
Patent numberWO2015189215A1
IPCH02M7/483,H02M7/757
Priority date10/06/14
Filing date9/06/15
Publication statusPublished - 17 Dec 2015

Keywords

  • semiconductor switching circuit
  • HVDC power converter
  • Semiconductor switching circuit

    Davidson, C., EFIKA, I. & Trainer, D., 13 Sep 2017, IPC No. H02J4/00, H02M7/483, H02M7/7575, H02M2001/344, H02M2007/4835, Y02E60/60, Patent No. EP2955837B1, 10 Jun 2014, Priority date 10 Jun 2014, Priority No. EP14275134.6A

    Research output: Patent

    Open Access
  • Semiconductor switching circuit

    Davidson, C., EFIKA, I. & Vershinin, K., 8 Jun 2016, IPC No. H02J3/36, H03K17/12, H03K17/567, H03K17/722, Patent No. EP3029834A1, 3 Dec 2014, Priority date 3 Dec 2014, Priority No. EP14275250

    Research output: Patent

    Open Access

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