US2465451A - Saturable reactor regulator - Google Patents

Saturable reactor regulator Download PDF

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Publication number
US2465451A
US2465451A US769028A US76902847A US2465451A US 2465451 A US2465451 A US 2465451A US 769028 A US769028 A US 769028A US 76902847 A US76902847 A US 76902847A US 2465451 A US2465451 A US 2465451A
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United States
Prior art keywords
windings
current
parallel
additional
winding
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Expired - Lifetime
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US769028A
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English (en)
Inventor
Hedstrom Sven Eric
Soderholm Arne
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ABB Norden Holding AB
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ASEA AB
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Publication of US2465451A publication Critical patent/US2465451A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means
    • G05B11/016—Automatic controllers electric details of the transmission means using inductance means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F9/00—Magnetic amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F9/00—Magnetic amplifiers
    • H03F9/04—Magnetic amplifiers voltage-controlled, i.e. the load current flowing in only one direction through a main coil, e.g. Logan circuits

Definitions

  • transductors Self-magnetized direct current saturable reactors-hereinafter referred to as transductorsare at present, as a rule, provided with socalled internal self-magnetisation, which implies that certain transductor elements, in some cases all such elements, are directly series-connected with valves which admit only a part of each alternating current wave through the transductor element.
  • Such a connection operates substantially in the same manner as direct current ampereturns superposed on the alternating current ampereturns and being of the same order of magnitures as the latter ones, i. e. as an external self-magnetisation with direct current ampereturns nearly corresponding to those of the alternating current, such self-magnetisation being usually designated as a hundred percent one.
  • the additional selfmagnetisation is obtained by means of a. winding connected in parallel to a resistance traversed by the main current of the transductor.
  • the resistance may consist of the main winding itself of the transductor or of a part thereof, in which case it should be observed, that the current serving the additional magnetisation is a (more or less pulsating) direct current, whence the winding acts, with respect to this current, not as an inductance but essentially as an ohmic resistance.
  • FIG. 3 Some forms of the invention are diagrammatically illustrated in the accompanying drawing in Figs. 1-3 and 5, while Fig. 4 is a. diagram of the manner of operation of the form according to Fig. 3.
  • the numerals I and 2 designate the two main windings of a transductor which further may have one or more control windings, not shown.
  • Each of the windings I and 2 is connected in series with a unidirectional valve 3, 4 respectively, and between these valves one terminal of an alternating current source is con nected, while between the other alternating current terminal and the windings I, 2 resistances 5, 6 are connected.
  • Eachvalve 3, 4 admits only one half of each alternating current wave, so that in the closed circuit through the valves, the windings i, 2 and the resistances 5, 6, a (pulsating) direct current flows. This current causes a voltage drop between the points I, 8.
  • Fig. 2 differs from Fig. 1 in that the additional windings H, Ill and their adjusting resistance II are connected directly in parallel with the main windings I, 2 instead of with resistances in series with these.
  • the action will be identical in principle, as the windings i, 2 and 9, I0 behave like ohmic resistances with respect to the direct current.
  • the windings may for instance have nearly the same number of turns or, more precisely, the additional windings may have a slightly higher number than the main windings I, 2 and at any rate with a smaller sectional area corresponding essentially to the smaller current.
  • the windings 9, ill may instead be connected in parallel to only a portion of the main windings, for instance to one half of these, which as a rule does not necessitate any additional tap, as the main windings are generally divided on two core legs each.
  • the additional windings 9, I II are as in Fig. 2 connected in parallel to the main windings I, 2, but the adjusting resistance, which is here designated by I2, is connected in a bridge between the additional windings and the valves 3, 4, so that the latter can be more or less shortcircuited by its adjustment at the same time as a larger or smaller portion of the resistance is connected in series with the windings 9, III.
  • I2 the adjusting resistance
  • a direct current saturable reactor for connection to a source of alternating current which comprises a pair of terminals adapted to be connected to such source, means forming two parallel current paths between said terminals, each of said paths including a reactor winding, a core for each of said windings, a rectifier valve in each of said paths in series with the winding therein, said valves admitting current in different directions through the two paths, and means forming a current path'shunting at least parts of said first two paths, said last path including additional windings one on each of said cores.
  • a direct current saturable reactor comprising two reactor windings connected in par-allel between alternating current terminals, magnetic cores for said windings, rectifier valves connected in series with said windings and admitting current in different directions through the different parallel windings, a resistance adapted to be traversed by the unidirectional current traversing said windings in series, and additional windings 3.
  • a direct current saturable reactor comprising two reactor windings connected in parallel between alternating current terminals, magnetic cores for said windings, rectifier valves connected in series with said windings and admitting current in different directions through the diiierent parallel windings and additional windings on the cores of said reactor windings connected in parallel to at least part of said first-mentioned wind- 4.
  • a direct current saturable reactor comprising two reactor windings connected in parallel between alternating current terminals, magnetic cores for said windings, rectifier valves connected in series with said windings and admitting current in different directions through the diflerent parallel windings, a resistance adapted to be traversed by the unidirectional current traversing said windings in series, additional windings on said cores, and an adjustable resistance in series therewith connected in parallel to said firstnamed resistance.
  • a direct current saturable reactor comprising two reactor windings connected in parallel between alternating current terminals, magnetic cores for said windings, rectifier valves connected in series with said windings and admitting current in diflerent directions through the different parallel windings, additional windings on the cores of said reactor connected in parallel to at least part of said first-mentioned windings, and
  • an adjustable resistance having one portion connected in series with said additional windings and one portion in parallel with said valves.
  • a direct current saturable polyphase reactor comprising for each phase two reactor windings connected in parallel between alternating current terminals, magnetic cores for said windings, rectifier valves connected in series with said windings and admitting current in diflerent directions through the difierent parallel windings, and an additional winding on each 01' said cores connected in parallel with at least part or one 0! said first-named windings mounted on another 1

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Rectifiers (AREA)
  • Control Of Electrical Variables (AREA)
US769028A 1946-08-27 1947-08-16 Saturable reactor regulator Expired - Lifetime US2465451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE638381X 1946-08-27

Publications (1)

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US2465451A true US2465451A (en) 1949-03-29

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US769028A Expired - Lifetime US2465451A (en) 1946-08-27 1947-08-16 Saturable reactor regulator

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US (1) US2465451A (ko)
BE (1) BE475361A (ko)
FR (1) FR951708A (ko)
GB (1) GB638381A (ko)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636158A (en) * 1948-12-31 1953-04-21 Gen Electric Magnetic saturation device
DE926866C (de) * 1950-02-12 1955-12-29 Siemens Ag Durch Vormagnetisierung regelbare Drosselanordnung
US2733307A (en) * 1953-04-23 1956-01-31 M ogle
US2786177A (en) * 1950-02-11 1957-03-19 Siemens Ag Saturation-controllable reactor devices
US2818545A (en) * 1951-09-22 1957-12-31 Asea Ab Saturable core reactor system
DE1026362B (de) * 1953-02-05 1958-03-20 Siemens Ag Magnetverstaerker in Selbstsaettigungsschaltung
US2839617A (en) * 1954-04-20 1958-06-17 Jr Charles Mitchell Davis Biasing means for self-saturating magnetic amplifier
US2938157A (en) * 1954-06-09 1960-05-24 Sperry Rand Corp Push-pull magnetic amplifiers
US3145305A (en) * 1961-09-18 1964-08-18 Levy Lester D. c. power supply for isolated loads
US3170106A (en) * 1960-07-20 1965-02-16 Allen B Rosenstein Resistive core balancing for magnetic reactor circuits

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101923130B (zh) * 2010-08-16 2014-01-22 中国电力科学研究院 一种换流阀用饱和电抗器的特殊试验方法
CN101975892B (zh) * 2010-09-10 2014-02-12 中国电力科学研究院 一种换流阀用饱和电抗器的损耗计算方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169093A (en) * 1937-01-02 1939-08-08 Gen Electric Electrical control system
US2403891A (en) * 1941-10-13 1946-07-09 Asea Ab Load current control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169093A (en) * 1937-01-02 1939-08-08 Gen Electric Electrical control system
US2403891A (en) * 1941-10-13 1946-07-09 Asea Ab Load current control

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636158A (en) * 1948-12-31 1953-04-21 Gen Electric Magnetic saturation device
US2786177A (en) * 1950-02-11 1957-03-19 Siemens Ag Saturation-controllable reactor devices
DE926866C (de) * 1950-02-12 1955-12-29 Siemens Ag Durch Vormagnetisierung regelbare Drosselanordnung
US2818545A (en) * 1951-09-22 1957-12-31 Asea Ab Saturable core reactor system
DE1026362B (de) * 1953-02-05 1958-03-20 Siemens Ag Magnetverstaerker in Selbstsaettigungsschaltung
US2733307A (en) * 1953-04-23 1956-01-31 M ogle
US2839617A (en) * 1954-04-20 1958-06-17 Jr Charles Mitchell Davis Biasing means for self-saturating magnetic amplifier
US2938157A (en) * 1954-06-09 1960-05-24 Sperry Rand Corp Push-pull magnetic amplifiers
US3170106A (en) * 1960-07-20 1965-02-16 Allen B Rosenstein Resistive core balancing for magnetic reactor circuits
US3145305A (en) * 1961-09-18 1964-08-18 Levy Lester D. c. power supply for isolated loads

Also Published As

Publication number Publication date
GB638381A (en) 1950-06-07
BE475361A (ko)
FR951708A (fr) 1949-11-02

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