BR9910214A - 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 - Google Patents

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

Info

Publication number
BR9910214A
BR9910214A BR9910214-5A BR9910214A BR9910214A BR 9910214 A BR9910214 A BR 9910214A BR 9910214 A BR9910214 A BR 9910214A BR 9910214 A BR9910214 A BR 9910214A
Authority
BR
Brazil
Prior art keywords
phase
current
conductor
neutral conductor
controllable load
Prior art date
Application number
BR9910214-5A
Other languages
Portuguese (pt)
Inventor
Mats Karlsson
Original Assignee
Telafonaktiebolaget Lm Ericsso
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 Telafonaktiebolaget Lm Ericsso filed Critical Telafonaktiebolaget Lm Ericsso
Publication of BR9910214A publication Critical patent/BR9910214A/en

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)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Control Of Ac Motors In General (AREA)
  • Rectifiers (AREA)

Abstract

"APARELHO PARA USO EM UM SISTEMA DE ABASTECIMENTO ELéTRICO TENDO PELO MENOS DUAS FASES E UM CONDUTOR NEUTRO E UMA CARGA CONTROLáVEL PARA CADA FASE, PROCESSO PARA REDUZIR A CORRENTE EM UM CONDUTOR NEUTRO EM UM SISTEMA ELéTRICO TENDO PELO MENOS DOIS CONDUTORES DE FASE E UM CONDUTOR NEUTRO E UMA CARGA CONTROLáVEL"PARA CADA FASE, SISTEMA ELéTRICO MONOFáSICO, E, PROCESSO PARA BALANCEAR A VOLTAGEM ATRAVéS DE DUAS CARGAS CONECTADAS EM SéRIE EM UM SISTEMA MONOFáSICO" Um aparelho para reduzir a corrente no condutor neutro de um sistema elétrico bi ou trifásico compreende: dispositivos (21,22,23) para medir a voltagem ou corrente de cada fase, dispositivos (35) para medir a corrente no condutor neutro; dispositivos de multiplicação (31,32,33) para multiplicar a voltagem ou corrente de cada fase pela corrente no condutor neutro; dispositivos (42) para retro-alimentar o produto da voltagem ou corrente de fase para a carga em circuito fechado de retro-alimentação negativa. O aparelho mencionado pode também compreender: dispositivos de interfase (21,22,23) para converter as voltagens ou correntes de fase e a corrente neutra em sinais de controle; e dispositivos (107, 109) para normalizar a saída dos dispositivos de multiplicação mencionados por filtragem passa-baixa. Um processo para reduzir a corrente neutra é também apresentado."APPLIANCE FOR USE IN AN ELECTRICAL SUPPLY SYSTEM WITH AT LEAST TWO PHASES AND A NEUTRAL CONDUCTOR AND A CONTROLLABLE LOAD FOR EACH PHASE, PROCESS TO REDUCE THE CURRENT IN A NEUTRAL CONDUCTOR IN AN ELECTRICAL SYSTEM WITH AT LEAST TWO PHASE CONDUCTORS AND ONE CONDUCTOR. NEUTRAL AND A CONTROLLABLE LOAD "FOR EACH PHASE, SINGLE-PHASE ELECTRICAL SYSTEM, AND PROCESS TO BALANCE THE VOLTAGE THROUGH TWO SERIES CONNECTED LOADS IN A SINGLE-PHASE SYSTEM" An appliance to reduce the current in the neutral conductor of a bi or three-phase electrical system : devices (21,22,23) to measure the voltage or current of each phase, devices (35) to measure the current in the neutral conductor; multiplication devices (31,32,33) to multiply the voltage or current of each phase by the current in the neutral conductor, devices (42) to feed back the product of the voltage or phase current to the negative loop load in the closed circuit. mentioned may also comprise: interphase devices (21,22,23) for converting phase voltages or currents and neutral current into control signals; and devices (107, 109) for normalizing the output of the mentioned multiplication devices by low-pass filtering. A process for reducing the neutral current is also presented.

BR9910214-5A 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 BR9910214A (en)

Applications Claiming Priority (2)

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
PCT/SE1999/000743 WO1999057793A1 (en) 1998-05-06 1999-05-04 Method and device for reducing the current in the neutral conductor

Publications (1)

Publication Number Publication Date
BR9910214A true BR9910214A (en) 2001-01-09

Family

ID=20411204

Family Applications (1)

Application Number Title Priority Date Filing Date
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

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)

* Cited by examiner, † Cited by third party
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
AU2013408349B2 (en) * 2013-12-18 2017-09-07 Otis Elevator Company Control strategies for multilevel line regenerative drive

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
EP1092255A1 (en) 2001-04-18
SE513884C2 (en) 2000-11-20
DE1092255T1 (en) 2002-02-07
SE9801582D0 (en) 1998-05-06
ES2158836T1 (en) 2001-09-16
RU2000130721A (en) 2002-11-27
AU4304799A (en) 1999-11-23
SE9801582L (en) 1999-11-07
JP2002514036A (en) 2002-05-14
TR200003209T2 (en) 2001-03-21
CN1308785A (en) 2001-08-15
HUP0102324A2 (en) 2001-10-28
CA2331710A1 (en) 1999-11-11
WO1999057793A1 (en) 1999-11-11

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FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]