GB2480205A - Improvements in galvanic isolators - Google Patents
Improvements in galvanic isolators Download PDFInfo
- 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- Withdrawn
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
-
- 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
-
- 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
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.
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)
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)
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)
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 |
-
2009
- 2009-03-05 GB GB1115342A patent/GB2480205A/en not_active Withdrawn
- 2009-03-05 WO PCT/GB2009/000619 patent/WO2010100391A1/en active Application Filing
Patent Citations (2)
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) |