EP0239786B1 - Réactance pour un dispositif de commutation haute puissance - Google Patents

Réactance pour un dispositif de commutation haute puissance Download PDF

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Publication number
EP0239786B1
EP0239786B1 EP87102636A EP87102636A EP0239786B1 EP 0239786 B1 EP0239786 B1 EP 0239786B1 EP 87102636 A EP87102636 A EP 87102636A EP 87102636 A EP87102636 A EP 87102636A EP 0239786 B1 EP0239786 B1 EP 0239786B1
Authority
EP
European Patent Office
Prior art keywords
choke
power supply
chokes
led
conductor track
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP87102636A
Other languages
German (de)
English (en)
Other versions
EP0239786A2 (fr
EP0239786A3 (en
Inventor
P.N.R. Dipl.-Phys. Chadwick
Horst Dipl.-Ing. Morgott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf International GmbH
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 Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Priority to AT87102636T priority Critical patent/ATE80493T1/de
Publication of EP0239786A2 publication Critical patent/EP0239786A2/fr
Publication of EP0239786A3 publication Critical patent/EP0239786A3/de
Application granted granted Critical
Publication of EP0239786B1 publication Critical patent/EP0239786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a high-power switching power supply with a power transformer, the primary branch of which consists of a mains rectifier and a switching stage, in the secondary circuit of which a filter circuit is provided after a rectifier part.
  • Switched-mode power supplies have the essential advantage over conventional power supplies that they have a higher degree of efficiency with a lower weight and a smaller volume at a correspondingly lower cost. This is offset by the disadvantages of a somewhat more complicated switching technology, stronger RF interference and greater difficulties in smoothing the output voltage.
  • German patent specification DE-C-486 189 shows a choke coil with a winding formed from strip-shaped conductors, two conductor tracks leading currents in the same direction through a common magnetic core.
  • the conductors are meandering, with mutual penetration between the legs of the common magnetic core.
  • the mutual penetration of the conductors with a comb-like end of one conductor, the prongs of which are inserted through holes in the other conductor and then connected to a further conductor section, is technically very complex. Because of the relatively high space requirement per choke, additional problems arise if several chokes are required for filtering interference.
  • the present invention is based on the object of finding a solution that is as optimal as possible also with regard to the necessary space and material requirements for improving smoothing and RF interference suppression in high-performance circuits.
  • the arrangement according to the invention corresponds to a choke with two turns, without the winding material having to be wound with its correspondingly large cross section because of the high currents. Another advantage is the good suppression properties of the filter circuit due to the symmetrical structure.
  • the basic circuit diagram of a switched-mode power supply shown in FIG. 1 shows a line rectifier NGL on the input side with a subsequent switching stage SST, which generates a square-wave voltage from the direct voltage by chopping and converts it using a transformer.
  • the filter circuit consists of a smoothing choke L G switched on along the one output line and a smoothing capacitor C G located in the shunt arm.
  • Such a sieve circuit has the disadvantage that the HF interference radiation caused by the switching stage SST and symbolized by lightning arrows is only sufficiently reduced in the choke branch. In the second output line leading to the negative pole, which contains no smoothing choke, the HF interference radiation reaches the output unhindered.
  • both chokes L G1 , L G2 each consist of one turn and, moreover, both turns are passed through the coil core SPK in the same winding direction. This means that the currents I flowing from point A to the positive pole or from the negative pole to point B add up through the coil core SPK.
  • FIG. 5 A structure which is particularly advantageous for high-power switching power supplies for the filter chokes according to FIGS. 3 and 4 is shown in FIG. 5. It shows in perspective Representation of a conductor track assigned to the choke L G1 in the form of a copper strip.
  • This copper strip is divided into three partial webs connected at one end, of which the middle partial web is guided as the first turn W1 through the bore of a tubular coil core SPK, while the two outer partial webs are returned on the outside of the core.
  • These two outer partial tracks are extended beyond the core and, with their extended ends bent at right angles to the core axis, are connected to one of the two output terminals - here with the positive pole.
  • the beginning of the middle partial web is also bent at right angles to the core axis and preferably in the opposite direction to the two outer partial webs.
  • the conductor track assigned to the other choke L G2 is likewise a copper strip and, starting from the second output terminal, initially runs between the two outer partial tracks of the other choke L G1 and then as a second turn W2 through the coil core SPK.
  • the bent ends of the two outer sub-paths of inductor L G1 and the intermediate conductor path of inductor L G2 suitably serve as mounting surfaces for one or more smoothing capacitors C G connected in parallel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)
  • Dc-Dc Converters (AREA)
  • Details Of Television Scanning (AREA)
  • Filters And Equalizers (AREA)

Claims (3)

  1. Unité d'alimentation de courant grande puissance à étage de commutation comportant un transformateur de puissance, dont la branche primaire est constituée par un redresseur de raccordement au réseau et un étage de commutation, et dans le circuit secondaire duquel est prévu, en aval d'une partie formant redresseur, un circuit de lissage, qui se compose de deux bobines d'arrêt (LG1,LG2) qui sont raccordées aux deux bornes de sortie et sont disposées respectivement dans la branche longitudinale, et d'au moins un condensateur transversal (CG), les deux bobines d'arrêt (LG1,LG2) étant constituées par des enroulements respectifs réalisés sous la forme de voies conductrices en forme de bandes, qui traversent, avec le même sens d'enroulement, un noyau magnétique commun (SPK), l'enroulement (W1) d'une bobine (LG) étant formé par une voie conductrice qui est subdivisée en trois bandes partielles, parmi lesquelles la bande centrale traverse le noyau magnétique tandis que les deux bandes partielles extérieures reviennent en arrière extérieurement le long du noyau et sont raccordées à l'une des deux bornes de sortie.
  2. Unité d'alimentation de courant grande puissance à étage de commutation suivant la revendication 1, caractérisée par le fait que la voie conductrice, qui est raccordée à l'autre borne de sortie, de l'autre bobine d'arrêt (LG2) s'étend entre les deux voies partielles de la première bobine d'arrêt (LG1) et traverse ensuite le noyau magnétique (SPK).
  3. Unité d'alimentation de courant grande puissance à étage de commutation suivant les revendications 1 et 2, caractérisée par le fait que les extrémités prolongées des deux bandes partielles extérieures d'une bobine d'arrêt (LG1) et la section, qui s'étend entre ces deux bandes partielles, de la voie conductrice pour l'autre bobine d'arrêt (LG2), sont utilisées comme surface de montage pour un ou plusieurs condensateurs de lissage (CG) branchés en parallèle.
EP87102636A 1986-02-28 1987-02-25 Réactance pour un dispositif de commutation haute puissance Expired - Lifetime EP0239786B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102636T ATE80493T1 (de) 1986-02-28 1987-02-25 Drossel fuer hochleistungs-schaltnetzteil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606592 1986-02-28
DE3606592 1986-02-28

Publications (3)

Publication Number Publication Date
EP0239786A2 EP0239786A2 (fr) 1987-10-07
EP0239786A3 EP0239786A3 (en) 1988-10-12
EP0239786B1 true EP0239786B1 (fr) 1992-09-09

Family

ID=6295208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102636A Expired - Lifetime EP0239786B1 (fr) 1986-02-28 1987-02-25 Réactance pour un dispositif de commutation haute puissance

Country Status (5)

Country Link
US (1) US4791543A (fr)
EP (1) EP0239786B1 (fr)
AT (1) ATE80493T1 (fr)
DE (1) DE3781578D1 (fr)
ES (1) ES2033704T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464001B (sv) * 1989-06-20 1991-02-18 Ericsson Telefon Ab L M Glaettningsfilter foer en likriktare
GB2243258B (en) * 1990-04-20 1994-09-07 Gold Star Co Magnetron for microwave oven
DE4222068C1 (fr) * 1992-07-04 1993-06-09 Abb Patent Gmbh, 6800 Mannheim, De
US6874708B2 (en) * 2003-02-13 2005-04-05 Illinois Tool Works Inc. Automatic air-assisted manifold mounted gun
DE102005037616A1 (de) * 2005-08-09 2007-02-15 Rohde & Schwarz Gmbh & Co. Kg Leitungstransformator zur Impedanzanpassung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE486189C (de) * 1929-11-12 Siemens Schuckertwerke Akt Ges Im Zuge der Hin- und Rueckleitung starker Stroeme liegende Drosselspule zur Erhoehung des induktiven Spannungsabfalls
US3340458A (en) * 1964-06-16 1967-09-05 Roy M Keller Filter choke with self-desaturating magnetic core
FR1422994A (fr) * 1964-11-17 1966-01-03 Circuit redresseur simple fournissant deux tensions continues symétriques
US3611233A (en) * 1969-08-14 1971-10-05 Atomic Energy Commission Pulse transformer using stripline windings
US3916286A (en) * 1974-09-19 1975-10-28 United Technologies Corp Switching power supply common output filter
SU982163A1 (ru) * 1981-03-24 1982-12-15 Предприятие П/Я В-8466 Конвертор
US4586120A (en) * 1983-12-30 1986-04-29 At&T Bell Laboratories Current limit shutdown circuit with time delay

Also Published As

Publication number Publication date
EP0239786A2 (fr) 1987-10-07
DE3781578D1 (de) 1992-10-15
ES2033704T3 (es) 1993-04-01
US4791543A (en) 1988-12-13
EP0239786A3 (en) 1988-10-12
ATE80493T1 (de) 1992-09-15

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