WO2009038336A3 - Apparatus for improving power quality - Google Patents

Apparatus for improving power quality Download PDF

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Publication number
WO2009038336A3
WO2009038336A3 PCT/KR2008/005483 KR2008005483W WO2009038336A3 WO 2009038336 A3 WO2009038336 A3 WO 2009038336A3 KR 2008005483 W KR2008005483 W KR 2008005483W WO 2009038336 A3 WO2009038336 A3 WO 2009038336A3
Authority
WO
WIPO (PCT)
Prior art keywords
load
phase
power
power quality
related art
Prior art date
Application number
PCT/KR2008/005483
Other languages
French (fr)
Other versions
WO2009038336A2 (en
Inventor
Hoonyang Park
Original Assignee
Enertech Co Ltd
Hoonyang Park
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 Enertech Co Ltd, Hoonyang Park filed Critical Enertech Co Ltd
Publication of WO2009038336A2 publication Critical patent/WO2009038336A2/en
Publication of WO2009038336A3 publication Critical patent/WO2009038336A3/en
Priority to KR1020097020979A priority Critical patent/KR101173632B1/en
Priority to PCT/KR2009/005269 priority patent/WO2010032957A2/en
Priority to CN2009801315082A priority patent/CN102124530A/en
Priority to US13/060,056 priority patent/US20110148556A1/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
    • H02J3/01—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H01F27/385—Auxiliary core members; Auxiliary coils or windings for reducing harmonics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/02—Auto-transformers
    • 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
    • Y02E40/40—Arrangements for reducing harmonics

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

Disclosed is a power quality improving apparatus of a three-phase (R, S, and T phase) four- wire power distribution system. The power quality improving apparatus includes: a load; a power supply device that supplies three-phase power to the load; and an autotransformer that is connected in series between the load and the power supply device in order to reduce harmonics that flow through a neutral line of the three-phase four- wire power distribution system. In the power quality improving apparatus according to the present invention, different from the related art in which harmonic reducing devices need to be individually installed in a plurality of load ends, even though only one harmonic reducing device is installed between a receiving end and a distributing end, it is possible to obtain a harmonic reduction effect that is similar to that in the related art. Therefore, installation costs can be reduced. Since the harmonic reducing device is installed between the receiving end and the distributing end that have a relatively wider space than the load end, the harmonic reducing device can be easily installed in a building, as compared with the related art.
PCT/KR2008/005483 2007-09-18 2008-09-17 Apparatus for improving power quality WO2009038336A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020097020979A KR101173632B1 (en) 2008-09-17 2009-09-16 Apparatus for improving power quality and power supply system
PCT/KR2009/005269 WO2010032957A2 (en) 2008-09-17 2009-09-16 Power quality improvement device and power supply system
CN2009801315082A CN102124530A (en) 2008-09-17 2009-09-16 Power quality improvement device and power supply system
US13/060,056 US20110148556A1 (en) 2008-09-17 2009-09-16 Power quality improvement device and power supply system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0094462 2007-09-18
KR20070094462 2007-09-18

Publications (2)

Publication Number Publication Date
WO2009038336A2 WO2009038336A2 (en) 2009-03-26
WO2009038336A3 true WO2009038336A3 (en) 2009-05-07

Family

ID=40468591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/005483 WO2009038336A2 (en) 2007-09-18 2008-09-17 Apparatus for improving power quality

Country Status (1)

Country Link
WO (1) WO2009038336A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2480708B (en) * 2010-09-01 2013-07-10 Emsc Uk Ltd Improved apparatus & method in relation to voltage optimization
CN102611112B (en) * 2012-04-05 2014-03-26 刘明日 Management system for optimizing and improving power quality of utility power grid
US10049811B2 (en) * 2015-03-20 2018-08-14 The Boeing Company Multi-phase autotransformer
CN107134358A (en) 2016-02-26 2017-09-05 艾默生网络能源有限公司 A kind of inductance winding method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273975A (en) * 1998-03-19 1999-10-08 Matsushita Electric Ind Co Ltd Common mode choke coil
KR100493987B1 (en) * 2004-09-21 2005-06-08 전력품질기술주식회사 Advanced zero sequence harmonic filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273975A (en) * 1998-03-19 1999-10-08 Matsushita Electric Ind Co Ltd Common mode choke coil
KR100493987B1 (en) * 2004-09-21 2005-06-08 전력품질기술주식회사 Advanced zero sequence harmonic filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
OH, J.H. ET AL.: "A NOVEL CONTROL METHOD OF COMBINED SYSTEM CONSISTS OF SERIES ACTIVE POWER FILTER AND PARALLEL PASSIVE POWER FILTER TO COMPENSATE CURRENT HARMONICS AND UNBALANCED SOURCE VOLTAGES", JKIEE, vol. 50B, no. 12, December 2001 (2001-12-01), pages 615 - 623 *

Also Published As

Publication number Publication date
WO2009038336A2 (en) 2009-03-26

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