GB2480205A - Improvements in galvanic isolators - Google Patents

Improvements in galvanic isolators Download PDF

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Publication number
GB2480205A
GB2480205A GB1115342A GB201115342A GB2480205A GB 2480205 A GB2480205 A GB 2480205A GB 1115342 A GB1115342 A GB 1115342A GB 201115342 A GB201115342 A GB 201115342A GB 2480205 A GB2480205 A GB 2480205A
Authority
GB
United Kingdom
Prior art keywords
galvanic isolator
semiconducting elements
current flow
switch
electronic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1115342A
Other versions
GB201115342D0 (en
Inventor
Jonathan Robert Shaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHORELINE PRODUCTS Ltd
Original Assignee
SHORELINE PRODUCTS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHORELINE PRODUCTS Ltd filed Critical SHORELINE PRODUCTS Ltd
Publication of GB201115342D0 publication Critical patent/GB201115342D0/en
Publication of GB2480205A publication Critical patent/GB2480205A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/04—Controlling or regulating desired parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A galvanic isolator is disclosed, which comprises a plurality of semiconducting elements, earth connecting means for connecting the plurality of semiconducting elements to at least two sources of electric potential having a current flow there between and control means adapted to switch the plurality of semiconducting elements into a low impedance state when a threshold voltage of the galvanic isolator is exceeded. The galvanic isolator further comprises an electronic bypass element adapted to bypass the plurality of semiconducting elements, and an electronic control circuit adapted to monitor the current flowing through the earth connecting means and to switch the electronic bypass element from a high resistance state suitable for a current flow below a first preset level, to a very low resistance state when the current flow increases above the first preset level. A method of reducing the power dissipation of a galvanic isolator is also disclosed.
GB1115342A 2009-03-05 2009-03-05 Improvements in galvanic isolators Withdrawn GB2480205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB2009/000619 WO2010100391A1 (en) 2009-03-05 2009-03-05 Improvements in galvanic isolators

Publications (2)

Publication Number Publication Date
GB201115342D0 GB201115342D0 (en) 2011-10-19
GB2480205A true GB2480205A (en) 2011-11-09

Family

ID=41320087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1115342A Withdrawn GB2480205A (en) 2009-03-05 2009-03-05 Improvements in galvanic isolators

Country Status (2)

Country Link
GB (1) GB2480205A (en)
WO (1) WO2010100391A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114720902B (en) * 2022-04-07 2022-10-14 国网黑龙江省电力有限公司佳木斯供电公司 Direct-current power supply fault rapid isolation system for transformer substation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751530A (en) * 1995-08-18 1998-05-12 Dairyland Electrical Industries, Inc. High power DC blocking device for AC and fault current grounding
US5756904A (en) * 1996-08-30 1998-05-26 Tekscan, Inc. Pressure responsive sensor having controlled scanning speed

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5856904A (en) * 1996-11-15 1999-01-05 Dairyland Electrical Industries, Inc. Voltage and current based control and triggering for isolator surge protector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751530A (en) * 1995-08-18 1998-05-12 Dairyland Electrical Industries, Inc. High power DC blocking device for AC and fault current grounding
US5756904A (en) * 1996-08-30 1998-05-26 Tekscan, Inc. Pressure responsive sensor having controlled scanning speed

Also Published As

Publication number Publication date
WO2010100391A1 (en) 2010-09-10
GB201115342D0 (en) 2011-10-19

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)