EP0026158B1 - Transformator mit variablem Transformationsverhältnis und statischem Kompensator mit Flipflop - Google Patents

Transformator mit variablem Transformationsverhältnis und statischem Kompensator mit Flipflop Download PDF

Info

Publication number
EP0026158B1
EP0026158B1 EP80810293A EP80810293A EP0026158B1 EP 0026158 B1 EP0026158 B1 EP 0026158B1 EP 80810293 A EP80810293 A EP 80810293A EP 80810293 A EP80810293 A EP 80810293A EP 0026158 B1 EP0026158 B1 EP 0026158B1
Authority
EP
European Patent Office
Prior art keywords
transformer
control
variable ratio
winding
turns
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
Application number
EP80810293A
Other languages
English (en)
French (fr)
Other versions
EP0026158A1 (de
Inventor
Gérald Roberge
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.)
Hydro Quebec
Original Assignee
Hydro Quebec
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 Hydro Quebec filed Critical Hydro Quebec
Publication of EP0026158A1 publication Critical patent/EP0026158A1/de
Application granted granted Critical
Publication of EP0026158B1 publication Critical patent/EP0026158B1/de
Expired legal-status Critical Current

Links

Images

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
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • 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
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Definitions

  • the present invention relates to a control transformer which can be used in particular as or for the production of a transformer with variable transformation ratio as well as for the production of a static rocker compensator.
  • the subject of the present invention is a control transformer applying the general principle of variable inductance for single-phase and three-phase circuits already described in European patent application No. 79400766.6 filed on October 19, 1979 in the name of the applicant and published April 30, 1980.
  • the present invention therefore relates to a control transformer which can advantageously be used as it is as a variable ratio transformer or which can be optionally coupled to a traditional transformer to form a variable ratio transformer where the load which the control transformer has to bear is decreased.
  • the first and second magnetic circuits are arranged with respect to each other so as to define at least two common magnetic spaces in which the respective alternating and continuous magnetic fields are superposed orthogonally to orient the magnetic dipoles of the common spaces in a direction predetermined by the intensity of the direct current magnetic field of the second circuit and thus controlling the permeability of the first magnetic field circuit in alternating field.
  • this control transformer can be coupled to a traditional transformer comprising N 1 turns at the primary and N 2 turns at the secondary, N 1 and N 2 being chosen so as to respect the inequality
  • the respective primary and secondary are connected in series, thus forming the primary and secondary of a variable ratio transformer capable of withstanding heavy loads.
  • variable ratio transformer can be used in a three-phase circuit.
  • a variable ratio transformer is used for each phase.
  • Tertiary windings can be added to control transformers. These windings have the effect of filtering the flow of 3rd harmonic if the transformer is used in its saturation zone.
  • the three control transformers or the three traditional transformers can also be mounted in a single unit.
  • FIG. 1 represents a developed view of the circumference of a control transformer for a three-phase circuit
  • Figure 2 shows a phase of a variable ratio transformer
  • Figure 3 shows a graph showing the results of an application of the variable ratio transformer illustrated in FIG. 2
  • FIG. 4 represents a phase of a static rocker compensator
  • FIG. 5 represents the connections to a phase of the static compensator illustrated in FIG. 4
  • FIG. 6 represents an oscillogram showing the results of an application of the compensator.
  • the control transformer illustrated in Figure 1 has a cylindrical core 1 whose circumference is a view developed for the purpose of simplification.
  • This core 1 comprises three legs 3, two rings 5 and a control core 7 perpendicular to the legs 3. From the mechanical point of view, the core 1 can be separated into several blocks in order to facilitate its construction, as described in detail. in the above-mentioned patent application No. 79400766.6.
  • the exact shape of the core can be varied. However, certain specific characteristics can improve the performance of the transformer.
  • the sheets will preferably be tangent to the rings forming the core, by concentric superposition of the sheets, for example.
  • the nuclei carrying the continuous field will preferably cut the nuclei carrying the alternating field (by manufacturing the nuclei of the alternative in two parts fixed to the nuclei of the continuous, for example) or the two types of nuclei will intersect mutually (by alternating the two series of sheets in the common region).
  • the cross section of the cores of the continuous will be equal to or greater than that of the cores of the alternative.
  • the control transformer comprises three primary windings A-A ', B-B' and C-C 'and three secondary windings a-a', b-b 'and c-c'.
  • Each set of primary and secondary windings is located on a particular leg 3 of the core.
  • Each leg also carries a tertiary winding 4.
  • These three tertiary windings connected in delta, can be used to filter the flow of third harmonic, if the transformer must work in saturation zone.
  • a control winding 9 surrounds the control core 7.
  • This control transformer operates in a similar fashion to the variable inductance described in co-pending application No. 79400766.6. It is thus possible to vary the inductance of the alternating circuit and consequently the transformation ratio of the transformer causing the circulating current to vary. lant in the control winding 9.
  • control transformer illustrated in Figure 1 can be used for the realization of a variable ratio transformer capable of supporting high loads.
  • This variable ratio transformer 10 comprises a control transformer 11 as previously described and a traditional transformer 13.
  • a single production phase with three-phase circuit is presented in FIG. 2, for the purpose of simplification.
  • the primary 15 of the control transformer 11, comprising n 1 turns, is connected in series with the primary 21 of the traditional transformer 13 comprising N 1 turns.
  • An alternating voltage source 25 is connected to the terminals of the primaries 15 and 21. The voltage Vp is measured there.
  • the secondary 17 of the control transformer 11, comprising n 2 turns, is connected in series with the secondary 23 of the traditional transformer 13, comprising N 2 turns.
  • a load 27 is connected to the terminals of the secondary 17 and 23. The voltage Vs is measured there.
  • variable ratio transformer it is necessary that be different from Indeed, if is equal to the control current has no effect on the load voltage.
  • the tertiary 19 of the control transformer 11 can be connected in delta with the tertiary of the other phases (not shown), depending on the operating range of the transformer. This connection reduces the flow of the third harmonic.
  • the control current Ic flowing in the control winding 9 is also measured.
  • variable ratio transformer can be applied to the production of a static rocker compensator 29.
  • the compensator 29 comprises a control transformer 11 as previously described and a traditional transformer 31 having a socket 33 to N 2 turns, a socket 35 to N 3 turns and a socket 37 to N 4 turns.
  • a return socket 39, at the secondary input of the control transformer, is also provided.
  • n 1 , n 2 , N 1 , N 2 , N 3 and N 4 are chosen so as to meet the following conditions:
  • a fixed capacitor C is connected to the socket 33 and a fixed or variable inductance L to the socket 37, the return being common (socket 39).
  • this arrangement behaves like a load which can take a capacitive value or an inductive value depending on the magnitude of the control current.
  • the tertiary winding 19 can be used or omitted.
  • the compensator can also serve, and simultaneously, as a power transformer.
  • FIG. 5 An assembly illustrating the behavior of the static rocker compensator is presented in FIG. 5 and an oscillogram illustrating the results appears in FIG. 6.
  • variable ratio transformer is presented as a single unit.
  • a voltage Vp is applied to the primary, and a current Ip is measured.
  • the direct current Icc supplied by a source Vcc is applied to a control winding.
  • sockets V 1 , V 2 , V 3 and N correspond to sockets 33, 35, 37 and 39 of the circuit in Figure 4.
  • the inductance is crossed by the current I L , the resistive load R by Ir and the capacitor C by lc.
  • the inductive current I L and the capacitive current Ic change immediately. This results in a variation of the angle of the power factor.
  • This compensator is therefore functional.
  • the current Ir of the resistive load has not changed. It is therefore possible to use the same device both as a compensator and as a power transformer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Ac-Ac Conversion (AREA)

Claims (13)

1. Kontrolltransformator, der einen ersten geschlossenen magnetischen Kreis aufweist, welcher von einem ersten ferromagnetischen Kern (3) gebildet wird, durch den ein magnetisches Wechselfeld fliesst, wobei der erste ferromagnetische Kern (3) eine Primärwicklung von n1 Windung und eine Sekundärwicklung von n2 Windungen trägt, welcher Kontrolltransformator einen zweiten geschlossenen magnetischen Kreis aufweist, welcher von einem zweiten ferromagnetischen Kern (7) gebildet wird, in welchen ein regulierbares Gleichstrommagnetfeld besteht, dadurch gekennzeichnet, dass die benannten ersten une zweiten magnetischen Kreise in solcher Weise gegenseitig angeordnet sind, dass sie zumindest zwei gemeinsame magnetische Räume bilden, in weichen die Wechsel- und Gleichstrom Magnetfelder sich rechtwinklig überdecken, um die magnetischen Dipole der benannten gemeinsamen Räume in eine Richtung zu orientieren, die durch die Stärke des benannten Gleichstrommagnetfeldes des zweiten Kreises vorbestimmt wird, und um so die Permeabilität des ersten magnetischen Kreises gegenüber dem benannten Wechselfeld zu kontrollieren.
2. Transformator mit variablem Transformationsverhältnis, dadurch gekennzeichnet, dass er einen Transformator (13) von herkömmlichen Typ aufweist, der eine Primärwicklung mit N1 Windungen und eine Sekundärwicklung mit N2 Windung umfasst, und dass er einen gemäss Anspruch 1 definierten Kontrolltransformator (11) aufweist, dessen Primärwicklung (n1) in Reihe mit der Primärwicklung (N1) des herkömmlichen Transformators geschaltet ist und dessen Sekundärwicklung (n2) in Reihe mit der Sekundärwicklung (Nz) des herkömmlichen Transformators geschaltet ist, wobei die Primär- und Sekundärwicklungen des herkömmlichen Transformators und des Kontrolltransformators derart gewählt sind, dass das Verhältnis
Figure imgb0015
verschieden vom Verhältnis
Figure imgb0016
ist, und wobei die Primär- und Sekundärwicklungen zusammen die Primär- und Sekundärseite des benannten Transformators (11) mit variablem Transformationsverhältnis bilden und wobei das benannte Transformationsverhältnis vom Strom des benannten Gleichstromagnetfeldes bestimmt wird.
3. Transformator mit variablem Transformationsverhältnis für Dreiphasenstromkreis, dadurch gekennzeichnet, dass er für jede seiner Phasen einen Transformator mit variablem Transformationsverhältnis gemäss Anspruch 2 aufwiest, wobei die Kontrolltransformatoren eine Tertiärwicklung (19) umfassen und wobei diese benannten Tertiärwicklungen der drie Kontrolltransformatoren in Deltaschaltung verbunden sind.
4. Transformator mit variablem Transformationsverhältnis für Dreiphasenstromkreis nach Anspruch 3, dadurch gekennzeichnet, dass die Kontrolltransformatoren (11) in einer einzigen Einheit angeordnet sind, wobei eine einzige Kontrollwicklung (9) vorhanden ist.
5. Transformator mit variablem Transformationsverhältnis für Dreiphasenstromkreis nach den Ansprüchen 3 und 4, dadurch gekennzeichnet, dass die herkömmlichen Transformatoren (13) in einer einzigen Einheit angeordnet sind.
6. Statischer Kompensator mit Flipflop, dadurch gekennzeichnet, dass er einen gemäss Anspruch 2 definierten Transformator mit variablem Transformationsverhältnis aufweist, wobei der benannte Transformator mit variablem Transformationsverhältnis eine erste Anzapfung mit Nz Windungen und eine zweite Anzapfung mit einer Windungszahl N4 kleiner als N2 auf der Sekundärwicklung des herkömmlichen Transformators (31, fig. 4) aufweist, und wobei n1, n2, N1, N2 und N4 derart gewählt sind, dass
Figure imgb0017
wobei ein Kondensator (C) einerseits mit einer (33) der Anzapfungen und andererseites mit dem Eingang der Sekundärseite (n2) des Kontrolltransformators (11) verbunden ist, und wobei eine Drosselschaltung (12) einerseits mit der anderen (37) der Anzapfungen und andererseits mit dem Eingang der Sekundärseite (n2) des Kontrolltransformators verbunden ist.
7. Statischer Kompensator nach Anspruch 6, dadurch gekennzeichnet, dass der Transformator mit variablem Transformationsverhältnis eine dritte Anzapfung (35) mit einer Windungszahl N3 zwischen N2 und N4 auf der Sekundärwicklung seines herkömmlichen Transformators (31) aufweist, wobei N3 derart gewählt ist, dass die Gleichung
Figure imgb0018
erfüllt ist.
8. Statischer Kompensator für Dreiphasenstromkreis dadurch gekennzeichnet, dass er für jede der Phasen einen statischen Kompensator gemäss Anspruch 6 oder 7 umfasst, wobei jeder der Kontrolltransformatoren eine Tertiärwicklung (19) aufweist, und wobei dei Tertiärwicklungen (19) der drei Kontrolltransformatoren in Deltaschaltung verbunden sind.
9. Transformator nach Anspruch 1, in welchem die benannten gemeinsamen magnetischen Räume Oeffnungen aufweisen.
10. Transformator nach Anspruch 1, in welchem die Kerne Ringe bilden und eine Reihe von zu den Ringen konzentrisch und tangential angeordneten Blechtafeln aufweisen.
11. Transformator nach Anspruch 1, in welchem der Querschnitt des ersten Kernes kleiner ist als der des zweiten Kernes.
12. Transformator nach Anspruch 1, in welchem der erste Kern aus zwei auf dem zweiten Kern befestigten Halbringen besteht.
13. Statischer Kompensator nach Anspruch 6, in welchem die benannte Drosselschaltung variabel ist.
EP80810293A 1979-09-19 1980-09-18 Transformator mit variablem Transformationsverhältnis und statischem Kompensator mit Flipflop Expired EP0026158B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA335,971A CA1126357A (fr) 1979-09-19 1979-09-19 Transformateur a rapport variable et compensateur statique a bascule
CA335971 1979-09-19

Publications (2)

Publication Number Publication Date
EP0026158A1 EP0026158A1 (de) 1981-04-01
EP0026158B1 true EP0026158B1 (de) 1984-02-15

Family

ID=4115170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80810293A Expired EP0026158B1 (de) 1979-09-19 1980-09-18 Transformator mit variablem Transformationsverhältnis und statischem Kompensator mit Flipflop

Country Status (4)

Country Link
US (1) US4445082A (de)
EP (1) EP0026158B1 (de)
CA (1) CA1126357A (de)
DE (1) DE3066610D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4970656A (en) * 1986-11-07 1990-11-13 Alcon Laboratories, Inc. Analog drive for ultrasonic probe with tunable phase angle
US5001649A (en) * 1987-04-06 1991-03-19 Alcon Laboratories, Inc. Linear power control for ultrasonic probe with tuned reactance
US5523673A (en) * 1994-03-04 1996-06-04 Marelco Power Systems, Inc. Electrically controllable inductor
EP0969486A4 (de) * 1997-12-17 2001-03-07 Tohoku Electric Power Co Fluxgesteuerter regeltransformator
TW535175B (en) 2000-10-16 2003-06-01 Primarion Inc System and method for orthogonal inductance variation
NO322286B1 (no) * 2004-12-23 2006-09-11 Magtech As Anordning og fremgangsmate for reduksjon av harmoniske i en trefaset spenningsforsyning
TW201117543A (en) * 2009-11-06 2011-05-16 Green Solution Tech Co Ltd Power supply converter
JP4800451B1 (ja) * 2011-06-10 2011-10-26 株式会社精電製作所 高周波トランス
US9343996B2 (en) 2014-02-04 2016-05-17 Pavel Dourbal Method and system for transmitting voltage and current between a source and a load

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB474209A (en) * 1936-04-06 1937-10-27 British Thomson Houston Co Ltd Improvements in and relating to electric transformers
FR991932A (fr) * 1949-08-04 1951-10-11 Asea Ab Transducteur
FR1124831A (fr) * 1955-05-18 1956-10-18 Femarc Transformateur à shunt magnétique réglable par auto-saturation
US2844804A (en) * 1955-07-06 1958-07-22 Letourneau Westinghouse Compan Control transformer
US3087108A (en) * 1957-01-03 1963-04-23 Dominic S Toffolo Flux switching transformer
DE1126986B (de) * 1960-02-05 1962-04-05 Fuji Electric Co Ltd Transformatorsatz mit einem Haupttransformator und einem an dessen Sternpunkt angeschalteten Regeltransformator
GB1058407A (en) * 1965-01-06 1967-02-08 Gen Electric Co Ltd Improvements in or relating to saturable reactors
DE1565795B1 (de) * 1966-04-04 1970-07-02 Secheron Atel Lichtbogenschweissanordnung
US3617858A (en) * 1969-07-07 1971-11-02 Warren Petroleum Corp Excitation of alternating current machinery
US3622868A (en) * 1970-02-06 1971-11-23 Joachim H Todt Regulating power transformer with magnetic shunt
US3757201A (en) * 1972-05-19 1973-09-04 L Cornwell Electric power controlling or regulating system
IN144527B (de) * 1976-10-06 1978-05-13 Inst Elektroswarki Patona
CA1095601A (en) * 1978-08-28 1981-02-10 Alfred M. Hase Regulating transformer with magnetic shunt

Also Published As

Publication number Publication date
US4445082A (en) 1984-04-24
DE3066610D1 (en) 1984-03-22
CA1126357A (fr) 1982-06-22
EP0026158A1 (de) 1981-04-01

Similar Documents

Publication Publication Date Title
EP0109096B1 (de) Anordnung mit variabler Induktivität
EP0026158B1 (de) Transformator mit variablem Transformationsverhältnis und statischem Kompensator mit Flipflop
US6317021B1 (en) Variable inductor
CA2092084A1 (en) Phase-shifting transformer system
EP2847774B1 (de) Dreiphasiger magnetmantel-drehtransformator mit drei magnetkernen
WO2013167829A1 (fr) Transformateur tournant triphase-diphase
EP3678151B1 (de) Mehrphasiger induktiver filter
FR2569880A1 (fr) Appareil d'etranglement pour fluides
US2399872A (en) Electrically operating regulating device
WO2020204686A1 (fr) Transformateur électrique a auto-induction
CH233014A (de) Schaltung mit einem Magnetverstärker.
FR2619735A1 (fr) Dispositif de compensation du courant reactif en fonction de la charge pour transformateur en particulier pour un transformateur de soudage
RU1835590C (ru) @ -Фазный магнитный усилитель
EP0184493A1 (de) Gleichstromregler mit Taktschalter und Transformator
FR3112886A1 (fr) Ensemble comprenant au moins une première et une deuxième inductance
DE428873C (de) Brueckenschaltung mit Induktionsspulen mit magnetischem Kern zur Frequenzvervielfachung oder Steuerung von Sendern der drahtlosen Telegraphie und Telephonie
BE441290A (de)
BE401888A (de)
CH238735A (fr) Transformateur à tension secondaire réglable de façon continue en grandeur et en signe.
BE402966A (de)
BE364335A (fr) Dispositif de réglage sous charge de la tension des transformateurs de puissance ou des lignes
BE387750A (de)
FR2570867A1 (fr) Inductance, notamment pour circuits integres monolithiques micro-ondes
BE358947A (de)
BE628907A (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB SE

17P Request for examination filed

Effective date: 19810707

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB LI SE

REF Corresponds to:

Ref document number: 3066610

Country of ref document: DE

Date of ref document: 19840322

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840830

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840930

Year of fee payment: 5

Ref country code: BE

Payment date: 19840930

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19841026

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19841204

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19860919

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19860930

Ref country code: CH

Effective date: 19860930

Ref country code: BE

Effective date: 19860930

BERE Be: lapsed

Owner name: HYDRO-QUEBEC

Effective date: 19860930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870527

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870602

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 80810293.3

Effective date: 19870812