SE9301426D0 - ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD - Google Patents
ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELDInfo
- Publication number
- SE9301426D0 SE9301426D0 SE9301426A SE9301426A SE9301426D0 SE 9301426 D0 SE9301426 D0 SE 9301426D0 SE 9301426 A SE9301426 A SE 9301426A SE 9301426 A SE9301426 A SE 9301426A SE 9301426 D0 SE9301426 D0 SE 9301426D0
- Authority
- SE
- Sweden
- Prior art keywords
- field
- magnetic
- station
- power frequency
- amplitude
- Prior art date
Links
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to a method and a device for actively damping the power-frequency magnetic fields which occur in the vicinity of, for example, small-sized transformer, network and distribution substations. This is performed by generating a field directed opposite to the unwanted magnetic field from the electric equipment in the station. This is achieved, for example, by disposing a compensating coil (8) along the walls of the station. A magnetic-field-sensing probe (6) is placed below the roof of the station in such a way that it covers an area where the amplitude of the magnetic field is as close to the mean field over the whole roof as possible. The magnetic-field-sensing probe is then connected to a current amplifier (9) which, in turn, feeds the compensating coil such that the amplitude of the field at the probe is considerably reduced.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9301426A SE9301426D0 (en) | 1993-04-28 | 1993-04-28 | ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD |
PCT/SE1994/000280 WO1994026084A1 (en) | 1993-04-28 | 1994-03-29 | A method and a device for actively damping power-frequency magnetic fields |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9301426A SE9301426D0 (en) | 1993-04-28 | 1993-04-28 | ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD |
Publications (1)
Publication Number | Publication Date |
---|---|
SE9301426D0 true SE9301426D0 (en) | 1993-04-28 |
Family
ID=20389741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9301426A SE9301426D0 (en) | 1993-04-28 | 1993-04-28 | ACTIVE DIMENSION OF POWER FREQUENCY MAGNET FIELD |
Country Status (2)
Country | Link |
---|---|
SE (1) | SE9301426D0 (en) |
WO (1) | WO1994026084A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE506698C2 (en) * | 1995-06-27 | 1998-02-02 | Volvo Ab | Device and method for reducing magnetic gear fields |
EP0880311B1 (en) * | 1996-10-04 | 2004-04-14 | Matsushita Electric Industrial Co., Ltd. | Electromagnetic field shielding device |
ES2147536B1 (en) * | 1998-12-21 | 2001-07-01 | Univ Madrid Complutense | COMPENSATION DEVICE OF THE MAGNETIC FIELD PRODUCED BY ELECTRIC TRACTION RAILWAYS. |
FI20001820A (en) * | 1999-12-13 | 2001-06-14 | Valtion Teknillinen | Method for damping magnetic interference in a magnetically protected room |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE432087B (en) * | 1977-10-18 | 1984-03-19 | Nils Borje Akesson | SHIP FOR PROTECT MAGNETIZATION OF VESSELS |
DE3122686A1 (en) * | 1981-06-06 | 1983-02-03 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | ARRANGEMENT FOR COMPENSATING MAGNETIC OWN FIELDS OF MOVABLE BODIES |
DE3403982A1 (en) * | 1984-02-04 | 1985-08-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | METHOD FOR AN EMERGENCY-FIELD-CONTROLLED MAGNETIC PROTECTIVE SYSTEM (SMES SYSTEM) |
DE3614527A1 (en) * | 1986-04-29 | 1987-11-05 | Bundesrep Deutschland | METHOD FOR SETTING A MAGNETIC PROTECTION (MES) - SYSTEM FOR COMPENSATING THE MAGNETIC INTERFERENCE FIELD OF A VEHICLE, IN PARTICULAR SHIP |
DE3723485A1 (en) * | 1987-07-16 | 1989-01-26 | Thomson Brandt Gmbh | Inductive cooking point |
GB8818087D0 (en) * | 1988-07-29 | 1988-09-01 | Univ Southampton | Improvements in/relating to attenuation of electro-magnetic field components |
-
1993
- 1993-04-28 SE SE9301426A patent/SE9301426D0/en unknown
-
1994
- 1994-03-29 WO PCT/SE1994/000280 patent/WO1994026084A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO1994026084A1 (en) | 1994-11-10 |
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