Semiconductor switching circuit

Colin Davidson; Ikenna EFIKA; Konstantin Vershinin

Semiconductor switching circuit

Colin Davidson (Inventor), Ikenna EFIKA (Inventor), Konstantin Vershinin (Inventor)

Electronic And Electrical Engineering

Research output: Patent

Abstract

There is provided a semiconductor switching circuit (70), for use in a HVDC power converter, comprising: a main current branch (74) including at least one main semiconductor switching element (12) and through which current flows in a first direction when the or each main semiconductor switching element (12) is switched on; an auxiliary current branch (76) connected in parallel with the main current branch (74), the auxiliary current branch (76) including at least one auxiliary semiconductor switching element (72); and a control unit (30) operatively connected to the or each main semiconductor switching element (12) to control switching of the or each main semiconductor switching element (12), the control unit (30) operatively connected via a or a respective voltage isolation device to the or each auxiliary semiconductor switching element (72) to control switching of the or each auxiliary semiconductor switching element (72), wherein the control unit (30) is programmed to switch on the or each auxiliary semiconductor switching element (72) in the auxiliary current branch (76) before, when or after the or each main semiconductor switching element (12) is switched on to selectively create an alternative current path via the auxiliary current branch (76) whereby current flowing in the first direction through the main current branch (74) is diverted to flow through the alternative current path to reduce the rate of change of current flowing through the or each main semiconductor switching element (12) immediately after the or each said main semiconductor switching element (12) is switched on.

Original language	English
Patent number	EP3029834A1
IPC	H02J3/36,H03K17/12,H03K17/567,H03K17/722
Priority date	3/12/14
Filing date	3/12/14
Publication status	Published - 8 Jun 2016

Keywords

semiconductor switching circuit
HVDC power converter

Access to Document

https://worldwide.espacenet.com/patent/search/family/052002865/publication/EP3029834A1?q=EP3029834A1

4 Patent

中华人民共和国国家知识产权局: Fault Protection for Voltage Source Converters
Davidson, C. (Inventor), EFIKA, I. (Inventor) & Trainer, D. (Inventor), 9 Nov 2018, IPC No. H02J3/36, H02M1/32, H02M7/483, Patent No. CN108781035A, 1 Mar 2017, Priority date 1 Mar 2017, Priority No. EP2017054711W
Research output: Patent

Open Access
Semiconductor switching circuit
Davidson, C. (Inventor), EFIKA, I. (Inventor) & Trainer, D. (Inventor), 13 Sept 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. (Inventor), EFIKA, I. (Inventor) & Trainer, D. (Inventor), 4 May 2017, IPC No. H02J4/00, Patent No. US2017126015A1, 9 Jun 2015, Priority date 10 Jun 2014, Priority No. EP14275134A
Research output: Patent

Open Access

Cite this

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title = "Semiconductor switching circuit",

abstract = "There is provided a semiconductor switching circuit (70), for use in a HVDC power converter, comprising: a main current branch (74) including at least one main semiconductor switching element (12) and through which current flows in a first direction when the or each main semiconductor switching element (12) is switched on; an auxiliary current branch (76) connected in parallel with the main current branch (74), the auxiliary current branch (76) including at least one auxiliary semiconductor switching element (72); and a control unit (30) operatively connected to the or each main semiconductor switching element (12) to control switching of the or each main semiconductor switching element (12), the control unit (30) operatively connected via a or a respective voltage isolation device to the or each auxiliary semiconductor switching element (72) to control switching of the or each auxiliary semiconductor switching element (72), wherein the control unit (30) is programmed to switch on the or each auxiliary semiconductor switching element (72) in the auxiliary current branch (76) before, when or after the or each main semiconductor switching element (12) is switched on to selectively create an alternative current path via the auxiliary current branch (76) whereby current flowing in the first direction through the main current branch (74) is diverted to flow through the alternative current path to reduce the rate of change of current flowing through the or each main semiconductor switching element (12) immediately after the or each said main semiconductor switching element (12) is switched on.",

keywords = "semiconductor switching circuit, HVDC power converter",

author = "Colin Davidson and Ikenna EFIKA and Konstantin Vershinin",

note = "CPC H03K17/125 (EP); H03K17/567 (EP); H03K17/722 (EP); H02J3/36 (EP); Y02E60/60 (EP); Priorities EP14275250A·2014-12-03 Application EP14275250A·2014-12-03 Publication EP3029834A1·2016-06-08 Published as EP3029834A1; EP3029834A1; H02J3/36,H03K17/12,H03K17/567,H03K17/722",

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AU - EFIKA, Ikenna

AU - Vershinin, Konstantin

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PY - 2016/6/8

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N2 - There is provided a semiconductor switching circuit (70), for use in a HVDC power converter, comprising: a main current branch (74) including at least one main semiconductor switching element (12) and through which current flows in a first direction when the or each main semiconductor switching element (12) is switched on; an auxiliary current branch (76) connected in parallel with the main current branch (74), the auxiliary current branch (76) including at least one auxiliary semiconductor switching element (72); and a control unit (30) operatively connected to the or each main semiconductor switching element (12) to control switching of the or each main semiconductor switching element (12), the control unit (30) operatively connected via a or a respective voltage isolation device to the or each auxiliary semiconductor switching element (72) to control switching of the or each auxiliary semiconductor switching element (72), wherein the control unit (30) is programmed to switch on the or each auxiliary semiconductor switching element (72) in the auxiliary current branch (76) before, when or after the or each main semiconductor switching element (12) is switched on to selectively create an alternative current path via the auxiliary current branch (76) whereby current flowing in the first direction through the main current branch (74) is diverted to flow through the alternative current path to reduce the rate of change of current flowing through the or each main semiconductor switching element (12) immediately after the or each said main semiconductor switching element (12) is switched on.

AB - There is provided a semiconductor switching circuit (70), for use in a HVDC power converter, comprising: a main current branch (74) including at least one main semiconductor switching element (12) and through which current flows in a first direction when the or each main semiconductor switching element (12) is switched on; an auxiliary current branch (76) connected in parallel with the main current branch (74), the auxiliary current branch (76) including at least one auxiliary semiconductor switching element (72); and a control unit (30) operatively connected to the or each main semiconductor switching element (12) to control switching of the or each main semiconductor switching element (12), the control unit (30) operatively connected via a or a respective voltage isolation device to the or each auxiliary semiconductor switching element (72) to control switching of the or each auxiliary semiconductor switching element (72), wherein the control unit (30) is programmed to switch on the or each auxiliary semiconductor switching element (72) in the auxiliary current branch (76) before, when or after the or each main semiconductor switching element (12) is switched on to selectively create an alternative current path via the auxiliary current branch (76) whereby current flowing in the first direction through the main current branch (74) is diverted to flow through the alternative current path to reduce the rate of change of current flowing through the or each main semiconductor switching element (12) immediately after the or each said main semiconductor switching element (12) is switched on.

KW - semiconductor switching circuit

KW - HVDC power converter

M3 - Patent

M1 - EP3029834A1

Y2 - 2014/12/03

ER -

Semiconductor switching circuit

Abstract

Keywords

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Research output

中华人民共和国国家知识产权局: Fault Protection for Voltage Source Converters