SE9801582L - Method and apparatus of an electrical system - Google Patents
Method and apparatus of an electrical systemInfo
- Publication number
- SE9801582L SE9801582L SE9801582A SE9801582A SE9801582L SE 9801582 L SE9801582 L SE 9801582L SE 9801582 A SE9801582 A SE 9801582A SE 9801582 A SE9801582 A SE 9801582A SE 9801582 L SE9801582 L SE 9801582L
- Authority
- SE
- Sweden
- Prior art keywords
- current
- phase
- neutral
- multiplying
- voltage
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
- Control Of Ac Motors In General (AREA)
- Rectifiers (AREA)
Abstract
An apparatus for reducing the current in the neutral conductor of an electrical two- or three-phase system comprises: means (21, 22, 23) for measuring the voltage or current of each phase; means (35) for measuring the current in the neutral conductor; multiplying means (31, 32, 33) for multiplying the phase voltage or current of each phase by the current in the neutral conductor; means (42) for feeding back the product of the phase voltage and the current to the load in a negative feedback loop. Said apparatus may also comprise: interface means (21, 22, 23) for converting the measured phase voltages or currents and the neutral current into control signals; and means (107, 109) for normalizing the output of said multiplying means by low-pass filtering. A method for reducing the neutral current is also disclosed.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9801582A SE513884C2 (en) | 1998-05-06 | 1998-05-06 | Device, method and system for reducing the zero current in electrical system |
RU2000130721/09A RU2000130721A (en) | 1998-05-06 | 1999-05-04 | METHOD AND DEVICE FOR REDUCING CURRENT IN A NEUTRAL WIRE |
ES99948571T ES2158836T1 (en) | 1998-05-06 | 1999-05-04 | METHOD AND DEVICE FOR REDUCING THE CURRENT IN A NEUTRAL DRIVER. |
TR2000/03209T TR200003209T2 (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing current in neutral conductor |
PCT/SE1999/000743 WO1999057793A1 (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in the neutral conductor |
CN99808342.9A CN1308785A (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in the neutral conductor |
DE1092255T DE1092255T1 (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in a neutral conductor |
BR9910214-5A BR9910214A (en) | 1998-05-06 | 1999-05-04 | Apparatus for use in an electrical supply system having at least two phases and a neutral conductor and a controllable load for each phase, process to reduce the current in a conductor in an electrical system having at least two phase conductors and a neutral conductor and a controllable load for each phase, single-phase electrical system, and, process to balance the voltage through two loads connected in series in a single-phase system |
JP2000547683A JP2002514036A (en) | 1998-05-06 | 1999-05-04 | Method and apparatus for reducing current in a neutral conductor |
AU43047/99A AU4304799A (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in the neutral conductor |
EP99948571A EP1092255A1 (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in the neutral conductor |
HU0102324A HUP0102324A2 (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in the neutral conductor |
CA002331710A CA2331710A1 (en) | 1998-05-06 | 1999-05-04 | Method and device for reducing the current in the neutral conductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9801582A SE513884C2 (en) | 1998-05-06 | 1998-05-06 | Device, method and system for reducing the zero current in electrical system |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9801582D0 SE9801582D0 (en) | 1998-05-06 |
SE9801582L true SE9801582L (en) | 1999-11-07 |
SE513884C2 SE513884C2 (en) | 2000-11-20 |
Family
ID=20411204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9801582A SE513884C2 (en) | 1998-05-06 | 1998-05-06 | Device, method and system for reducing the zero current in electrical system |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP1092255A1 (en) |
JP (1) | JP2002514036A (en) |
CN (1) | CN1308785A (en) |
AU (1) | AU4304799A (en) |
BR (1) | BR9910214A (en) |
CA (1) | CA2331710A1 (en) |
DE (1) | DE1092255T1 (en) |
ES (1) | ES2158836T1 (en) |
HU (1) | HUP0102324A2 (en) |
RU (1) | RU2000130721A (en) |
SE (1) | SE513884C2 (en) |
TR (1) | TR200003209T2 (en) |
WO (1) | WO1999057793A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9244521B2 (en) | 2012-12-26 | 2016-01-26 | Intel Corporation | Supporting runtime D3 and buffer flush and fill for a peripheral component interconnect device |
CN105830332B (en) * | 2013-12-18 | 2019-10-18 | 奥的斯电梯公司 | Control strategy for more level line regenerative drivers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574356A (en) * | 1994-07-08 | 1996-11-12 | Northrop Grumman Corporation | Active neutral current compensator |
US5568371A (en) * | 1994-09-29 | 1996-10-22 | Texas A&M University System | Active harmonic power filter apparatus and method |
US5648894A (en) * | 1994-09-30 | 1997-07-15 | General Electric Company | Active filter control |
CA2157307C (en) * | 1994-10-10 | 1999-07-06 | Luke Yu | Zero-sequence current suppressor |
-
1998
- 1998-05-06 SE SE9801582A patent/SE513884C2/en unknown
-
1999
- 1999-05-04 ES ES99948571T patent/ES2158836T1/en active Pending
- 1999-05-04 CN CN99808342.9A patent/CN1308785A/en active Pending
- 1999-05-04 BR BR9910214-5A patent/BR9910214A/en not_active Application Discontinuation
- 1999-05-04 HU HU0102324A patent/HUP0102324A2/en unknown
- 1999-05-04 EP EP99948571A patent/EP1092255A1/en not_active Withdrawn
- 1999-05-04 RU RU2000130721/09A patent/RU2000130721A/en not_active Application Discontinuation
- 1999-05-04 DE DE1092255T patent/DE1092255T1/en active Pending
- 1999-05-04 AU AU43047/99A patent/AU4304799A/en not_active Abandoned
- 1999-05-04 TR TR2000/03209T patent/TR200003209T2/en unknown
- 1999-05-04 JP JP2000547683A patent/JP2002514036A/en active Pending
- 1999-05-04 CA CA002331710A patent/CA2331710A1/en not_active Abandoned
- 1999-05-04 WO PCT/SE1999/000743 patent/WO1999057793A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE513884C2 (en) | 2000-11-20 |
ES2158836T1 (en) | 2001-09-16 |
AU4304799A (en) | 1999-11-23 |
CN1308785A (en) | 2001-08-15 |
CA2331710A1 (en) | 1999-11-11 |
TR200003209T2 (en) | 2001-03-21 |
DE1092255T1 (en) | 2002-02-07 |
RU2000130721A (en) | 2002-11-27 |
SE9801582D0 (en) | 1998-05-06 |
EP1092255A1 (en) | 2001-04-18 |
BR9910214A (en) | 2001-01-09 |
WO1999057793A1 (en) | 1999-11-11 |
JP2002514036A (en) | 2002-05-14 |
HUP0102324A2 (en) | 2001-10-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE9400009L (en) | Method and apparatus for directional determination of faults on a power line | |
ATE161969T1 (en) | HIGH SPEED POWER ANALYZER | |
ES8608172A1 (en) | Metering system for measuring parameters of high ac electric energy flowing in an electric conductor. | |
TW334634B (en) | Low voltage reference circuit and method of operation | |
CA2071033A1 (en) | Method and apparatus for controlling the output voltage of an ac electrical system | |
EP0341980A3 (en) | Method and circuit for voltage regulation of dc power sources including a generator having an exciter field coil | |
JPS6450718A (en) | Method and circuit for controlling operation of parallel electric source and electric systems | |
DE3664987D1 (en) | Device for producing a three-phase voltage system with a neutral cable to be loaded | |
SE9801582L (en) | Method and apparatus of an electrical system | |
WO2000007274A3 (en) | Active common-mode compensation for multi-phase inverters | |
EP0766162A3 (en) | Circuit for improved load transient response in power supplies | |
NO20000710L (en) | Method and apparatus for improving the power quality of a superimposed grid | |
JPS56117576A (en) | Compensating circuit for phase difference of power converter | |
SU1415389A1 (en) | Power supply system | |
JPS55124354A (en) | Terminal connection system | |
JPS5759175A (en) | Operating device for symmetrical quantity of electricity | |
JPS56158958A (en) | Electric power measurement device | |
JPS54150616A (en) | Reactive current compensator for synchronous generator automatic voltage regulator | |
ATE80471T1 (en) | ARRANGEMENT FOR CONVERTING AN ELECTRICAL MULTI-PHASE SIGNAL INTO A FREQUENCY. | |
GB1486965A (en) | Method of and apparatus for measuring impedances of a distribution network | |
JPS57129193A (en) | Current detector for dc electric machine | |
JPS5457649A (en) | Constant current power source device | |
NZ509422A (en) | Determination of the critical current for a superconducting conductor by using the part of the resulting magnetic field that is out of phase with the external field | |
JPS5713975A (en) | Control of output voltage for polyphase inverter | |
JPS5449555A (en) | Testing device of system having reactive power control device |