WO1988005208A1 - Excitation de thyristors pour commutateur de reglage en charge - Google Patents

Excitation de thyristors pour commutateur de reglage en charge Download PDF

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Publication number
WO1988005208A1
WO1988005208A1 PCT/AT1987/000073 AT8700073W WO8805208A1 WO 1988005208 A1 WO1988005208 A1 WO 1988005208A1 AT 8700073 W AT8700073 W AT 8700073W WO 8805208 A1 WO8805208 A1 WO 8805208A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
thyristors
permanent magnet
ignition
magnetic circuit
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.)
Ceased
Application number
PCT/AT1987/000073
Other languages
German (de)
English (en)
Inventor
Ernst Sonntagbauer
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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
Priority claimed from AT344886A external-priority patent/ATA344886A/de
Application filed by Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of WO1988005208A1 publication Critical patent/WO1988005208A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/541—Contacts shunted by semiconductor devices
    • H01H9/542—Contacts shunted by static switch means

Definitions

  • the invention relates to an arrangement for generating the ignition voltage for thyristors, two thyristors in each case connected antiparallel and parallel to the
  • Permanent contacts of a diverter switch are arranged.
  • Control stage is selected via the selected transformer taps (see DE-PS 2 104 076).
  • the thyristors are only briefly loaded during the switching process. If the changeover switch is in the normal operating position, the thyristors are due to the fact that they are parallel to them
  • the thyristors are normally not designed for permanent loading, which means that they can be subjected to overload in the event of a fault. If such a fault persists for a long time, the thyristors must carry the load current during this period; this can destroy the thyristors.
  • the object of the invention is to create an arrangement of the type mentioned at the outset which, on the one hand,
  • the arrangement according to the invention is characterized in that a permanent magnet mechanically coupled to the movable contact of the switch is provided, its penetration into the air gap of a magnetic circuit changing its induction and into the am
  • Coils arranged in the iron core of the magnetic circuit induces a voltage which can be supplied to the ignition inputs of the thyristors and that the conductive state of the thyristors occurs before the switch is opened.
  • the arrangement according to the invention has the advantage that the voltage required to ignite the thyristors, that of one with the movable one
  • the preferably cuboid permanent magnet is rotatably arranged in the air gap of a magnetic circuit on an axis which is connected via a conversion to the movable part of the diverter switch and is mounted normally to the direction of flow of the magnetic field.
  • a further embodiment of the invention consists in that the entire arrangement is under oil, a housing being provided in the area of the air gap of the magnetic circuit which encloses the permanent magnet in an oil-tight manner.
  • the salient poles of the iron core are designed as pole shoes.
  • the iron core of the magnetic circuit is constructed as a hollow cylinder and has an M-shape in section, the central leg carrying the ignition coils in the longitudinal direction in two corresponding to the width of the immersing permanent magnet and halves located parallel to one another, each interrupted by an air gap, between which the permanent magnet penetrates.
  • Iron core both its size and, due to the smaller number of turns, the ignition coils are smaller.
  • each thyristor group is assigned its own ignition coil, the same ignition voltage being inducible by the same magnetic coupling in the ignition coils.
  • each thyristor stage can be assigned its own ignition coil; since this is coupled to the same magnetic circuit, the same ignition voltage is also induced. This ensures the simultaneous ignition of all elements assigned to a thyristor stage.
  • the increase in the ignition voltage depending on the number of turns of the ignition coils can be made as steep as desired.
  • FIG. 1 shows a magnetic circuit made of a high-quality iron core 1 with four ignition coils 2, 3, 4, 5 attached to the leg opposite the air gap 6. Outside the iron core 1, in the plane of the air gap 6, there is the one with the movable one Contact 10 mechanically coupled permanent magnet 7; this mechanical coupling is not shown in detail. The contact 10 is moving so moves with it the permanent magnet 7 and enters the air gap 6, or from "this out.
  • the critical phase of the switchover is the point in time at which the load current is commutated from the contact 10 to the thyristors 8a, 8b, 9a, 9b.
  • the thyristors 8a, 8b, 9a, 9b must be activated here before the contact 10 opens. This timing advance of the control is to be ensured by an appropriate design of the mechanical coupling.
  • the permanent magnet 7 moving in the air gap 6 causes a change in the magnetic induction in the magnetic circuit, and thereby the generation of a voltage pulse in the ignition coils 2, 3, 4, 5.
  • 2 shows the arrangement with a rotatable permanent magnet, without a housing
  • 3 shows the arrangement with a permanent magnet to be moved in a straight line within an iron core constructed in the form of a hollow cylinder.
  • FIG. 2 shows a magnetic circuit made from an iron core 11 with four ignition coils 12, 13, 14, 15 attached to the leg opposite the air gap 16.
  • the permanent magnet 19 is rotatably supported in the air gap 16, between the curved cut surfaces of the poles 17, 18 of the iron core 11.
  • the mechanical coupling which is the movement of the movable contact of the switch in a rotating Movement of the permanent magnet 19 and the arrangement with a permanent magnet housed in an oil-tight housing are not shown.
  • the permanent magnet 19 rotating in the air gap 16 causes a change in the magnetic induction in the magnetic circuit and thereby the generation of a voltage pulse in the ignition coils 12, 13, 14, 15.
  • FIG. 3 is a hollow cylindrical magnetic circuit consisting of an iron core 20, which has an M-shape in section, with yoke legs 22, 23 and two leg halves 21a, -21b arranged parallel to one another and carrying the ignition coils, which are in one the width of the permanent magnet 29 corresponding distance from each other can be seen.
  • the permanent magnet 29, which is mechanically coupled to the movable contact of the switch, is arranged in the air gap 28, between the two leg halves 21a, 21b.
  • the mechanical coupling is not shown. If the contact of the switch moves, the permanent magnet 29 in the air gap 28 also moves with it and causes a change in the magnetic induction in the magnetic circuit, and thereby the generation of a voltage pulse in the ignition coils 24, 25, 26, 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Montage destiné à produire la tension d'amorçage pour des thyristors branchés de manière anti-parallèle et agencés parallèlement au contact permanent d'un commutateur de réglage en charge. Jusqu'à présent, on prélevait l'énergie permettant de produire la tension d'amorçage nécessaire à l'excitation des thyristors soit sur des sources de tension externes soit sur l'étage de réglage à commuter, par l'intermédiaire des prises choisies sur les transformateurs. Dans la présente invention, la tension nécessaire à l'amorçage de thyristors (8a, 8b, 9a, 9b) est produite par un aimant permanent (7) couplé mécaniquement avec le contact mobile (10) dans les bobines d'amorçage (2, 3, 4, 5) se trouvant dans un champ magnétique, et amenée aux thyristors (8a, 8b, 9a, 9b). Cet agencement permet d'accroître notablement la fiabilité du commutateur car il n'est pas tributaire d'une source de tension externe et évite les états de commutation instables dûs aux coupures de tension fréquentes lors de la chute de tension de l'étage régulateur à commuter, provoquée par la prise choisie sur les transformateurs.
PCT/AT1987/000073 1986-12-29 1987-11-30 Excitation de thyristors pour commutateur de reglage en charge Ceased WO1988005208A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT344886A ATA344886A (de) 1986-12-29 1986-12-29 Thyristoransteuerung fuer lastumschalter
ATA3448/86 1986-12-29
AT274087 1987-10-16
ATA2740/87 1987-10-16

Publications (1)

Publication Number Publication Date
WO1988005208A1 true WO1988005208A1 (fr) 1988-07-14

Family

ID=25599000

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1987/000073 Ceased WO1988005208A1 (fr) 1986-12-29 1987-11-30 Excitation de thyristors pour commutateur de reglage en charge

Country Status (1)

Country Link
WO (1) WO1988005208A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024943A1 (fr) * 1992-05-22 1993-12-09 Elin Oltc Gmbh Stufenschalter Für Transformatoren Dispositif pour la production de la tension d'amorçage pour des thyristors
WO2002058088A1 (fr) * 2001-01-18 2002-07-25 Maschinenfabrik Reinhausen Gmbh Changeur de prise en charge a thyristor
RU2375777C2 (ru) * 2006-10-25 2009-12-10 Юрий Васильевич Потапов Блок трансформатор-выключатель трехфазного тока
RU2394296C2 (ru) * 2008-05-26 2010-07-10 Юрий Васильевич Потапов Блок трансформатор(ы)-выключатель

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598827C (de) * 1929-11-06 1934-06-19 Siemens Schuckertwerke Akt Ges Regelbare Drosselspule
DE1260612B (de) * 1961-03-28 1968-02-08 Bbc Brown Boveri & Cie Lastumschalter fuer Stufentransformatoren, bei dem die Lastumschaltung mit antiparallel geschalteten, gesteuerten Ventilen erfolgt
DE1297220B (de) * 1964-08-12 1969-06-12 Bbc Brown Boveri & Cie Anordnung an Stufenschaltern fuer Transformatoren
DE1514496A1 (de) * 1965-07-02 1969-10-16 Siemens Ag Abgleichvorrichtung bei einer Ferrit-Schalenkern-Spule mit Luftspalt
DE2011708A1 (de) * 1969-04-10 1970-10-15 Kombinat VEB Lokomotivbau-Elektrotechnische Werke Hans Beimler, Hennigsdorf wesen, Ost-Berlin WP139H9 Schaltungsanordnung zur Sicherung von impulsgesteuerten Thyristorgruppen gegen Störimpulse
DE2336748A1 (de) * 1973-07-19 1975-02-06 Transformatoren Union Ag Anordnung zur lastumschaltung bei stufentransformatoren mit steuerbaren halbleitergleichrichtern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE598827C (de) * 1929-11-06 1934-06-19 Siemens Schuckertwerke Akt Ges Regelbare Drosselspule
DE1260612B (de) * 1961-03-28 1968-02-08 Bbc Brown Boveri & Cie Lastumschalter fuer Stufentransformatoren, bei dem die Lastumschaltung mit antiparallel geschalteten, gesteuerten Ventilen erfolgt
DE1297220B (de) * 1964-08-12 1969-06-12 Bbc Brown Boveri & Cie Anordnung an Stufenschaltern fuer Transformatoren
DE1514496A1 (de) * 1965-07-02 1969-10-16 Siemens Ag Abgleichvorrichtung bei einer Ferrit-Schalenkern-Spule mit Luftspalt
DE2011708A1 (de) * 1969-04-10 1970-10-15 Kombinat VEB Lokomotivbau-Elektrotechnische Werke Hans Beimler, Hennigsdorf wesen, Ost-Berlin WP139H9 Schaltungsanordnung zur Sicherung von impulsgesteuerten Thyristorgruppen gegen Störimpulse
DE2336748A1 (de) * 1973-07-19 1975-02-06 Transformatoren Union Ag Anordnung zur lastumschaltung bei stufentransformatoren mit steuerbaren halbleitergleichrichtern

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024943A1 (fr) * 1992-05-22 1993-12-09 Elin Oltc Gmbh Stufenschalter Für Transformatoren Dispositif pour la production de la tension d'amorçage pour des thyristors
AT401982B (de) * 1992-05-22 1997-01-27 Elin Energieversorgung Anordnung zur erzeugung der zündspannung für thyristoren
WO2002058088A1 (fr) * 2001-01-18 2002-07-25 Maschinenfabrik Reinhausen Gmbh Changeur de prise en charge a thyristor
CZ303887B6 (cs) * 2001-01-18 2013-06-12 Maschinenfabrik Reinhausen Gmbh Tyristorový menic odbocky
RU2375777C2 (ru) * 2006-10-25 2009-12-10 Юрий Васильевич Потапов Блок трансформатор-выключатель трехфазного тока
RU2394296C2 (ru) * 2008-05-26 2010-07-10 Юрий Васильевич Потапов Блок трансформатор(ы)-выключатель

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