SE9504342D0 - Lighting system with zero current inductor - Google Patents

Lighting system with zero current inductor

Info

Publication number
SE9504342D0
SE9504342D0 SE9504342A SE9504342A SE9504342D0 SE 9504342 D0 SE9504342 D0 SE 9504342D0 SE 9504342 A SE9504342 A SE 9504342A SE 9504342 A SE9504342 A SE 9504342A SE 9504342 D0 SE9504342 D0 SE 9504342D0
Authority
SE
Sweden
Prior art keywords
winding
conductors
harmonic
core
zero
Prior art date
Application number
SE9504342A
Other languages
Swedish (sv)
Other versions
SE515520C2 (en
SE9504342L (en
Inventor
Kjeld Thorborg
Original Assignee
Swedeponic Ab
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 Swedeponic Ab filed Critical Swedeponic Ab
Priority to SE9504342A priority Critical patent/SE515520C2/en
Publication of SE9504342D0 publication Critical patent/SE9504342D0/en
Priority to PCT/SE1996/001539 priority patent/WO1997021264A1/en
Priority to AU10453/97A priority patent/AU1045397A/en
Priority to EP96941260A priority patent/EP0867061A1/en
Priority to JP9521194A priority patent/JP2000501878A/en
Publication of SE9504342L publication Critical patent/SE9504342L/en
Publication of SE515520C2 publication Critical patent/SE515520C2/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • 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

Landscapes

  • Inverter Devices (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention relates to a power supply for non-linear loads (2), such as high pressure sodium lamps in greenhouses or road lighting. Non-linear loads connected between phase (R, S, T) and neutral (N) generate third harmonic currents causing losses and temperature rise in for example conductors and transformers. To reduce the third harmonic current a zero-inductor (6) is inserted either with one winding on a common core in series with each of the phase conductors, or just one winding in series with the neutral conductor. In a preferred version the conductors (R, S, T or N) are threaded through the core forming single-turn windings. In a further development of the invention the core is fitted with an air gap (9) and a multi-turn winding (8) connected to a capacitor (7), which together with the zero-inductor constitute a parallel resonant filter tuned to a frequency in the vicinity of that of the third harmonic.
SE9504342A 1995-12-05 1995-12-05 Lighting system with zero sequence current inductor SE515520C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9504342A SE515520C2 (en) 1995-12-05 1995-12-05 Lighting system with zero sequence current inductor
PCT/SE1996/001539 WO1997021264A1 (en) 1995-12-05 1996-11-26 Power supply for non-linear loads
AU10453/97A AU1045397A (en) 1995-12-05 1996-11-26 Power supply for non-linear loads
EP96941260A EP0867061A1 (en) 1995-12-05 1996-11-26 Power supply for non-linear loads
JP9521194A JP2000501878A (en) 1995-12-05 1996-11-26 Power supply for nonlinear load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9504342A SE515520C2 (en) 1995-12-05 1995-12-05 Lighting system with zero sequence current inductor

Publications (3)

Publication Number Publication Date
SE9504342D0 true SE9504342D0 (en) 1995-12-05
SE9504342L SE9504342L (en) 1997-06-06
SE515520C2 SE515520C2 (en) 2001-08-20

Family

ID=20400470

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9504342A SE515520C2 (en) 1995-12-05 1995-12-05 Lighting system with zero sequence current inductor

Country Status (5)

Country Link
EP (1) EP0867061A1 (en)
JP (1) JP2000501878A (en)
AU (1) AU1045397A (en)
SE (1) SE515520C2 (en)
WO (1) WO1997021264A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055124A1 (en) * 1998-04-18 1999-10-28 Manfred Diez Method for operating a gaseous discharge lamp and system for carrying out such a method
DE20222013U1 (en) * 2002-06-07 2010-11-04 Epcos Ag Current-compensated choke and circuit arrangement with the current-compensated choke
JP5033215B2 (en) * 2010-04-19 2012-09-26 株式会社因幡電機製作所 Street light
DE102010044621A1 (en) * 2010-09-02 2012-03-08 Siemens Aktiengesellschaft Device for suppressing high-frequency currents in supply lines of an inverter
US11136985B2 (en) 2018-08-31 2021-10-05 Baker Hughes, A Ge Company, Llc High frequency AC noise suppression within transformers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1727834A (en) * 1920-05-15 1929-09-10 Bbc Brown Boveri & Cie Rectifying system
EP0172254B1 (en) * 1984-02-16 1992-04-22 Fanuc Ltd. High frequency noise absorbing circuit
JPS6130917A (en) * 1984-07-19 1986-02-13 富士電気化学株式会社 Noise filter for 3-phase 4-wires
US5323304A (en) * 1992-01-27 1994-06-21 Georator Corporation A.C. storage module for reducing harmonic distortion in an A.C. waveform
DK58494A (en) * 1994-01-21 1995-07-22 Martin Hansen Nr Method of power supply of a lighting system and its use
FI942447A0 (en) * 1994-05-26 1994-05-26 Abb Stroemberg Kojeet Oy Foerfarande Foer eliminering av stoerningar i ett elkraftoeverfoeringsnaet samt koppling i ett elkraftoeverfoeringsnaet

Also Published As

Publication number Publication date
SE515520C2 (en) 2001-08-20
AU1045397A (en) 1997-06-27
SE9504342L (en) 1997-06-06
EP0867061A1 (en) 1998-09-30
WO1997021264A1 (en) 1997-06-12
JP2000501878A (en) 2000-02-15

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