US3299318A - Arrangement for igniting controlled rectifiers with the aid of pulses - Google Patents

Arrangement for igniting controlled rectifiers with the aid of pulses Download PDF

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Publication number
US3299318A
US3299318A US413905A US41390564A US3299318A US 3299318 A US3299318 A US 3299318A US 413905 A US413905 A US 413905A US 41390564 A US41390564 A US 41390564A US 3299318 A US3299318 A US 3299318A
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United States
Prior art keywords
voltage
control
alternating
controlled rectifier
circuit
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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
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US413905A
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English (en)
Inventor
Schutte Werner
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US Philips Corp
North American Philips Co Inc
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US Philips Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
    • H02M1/04—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/15—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/1555—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit

Definitions

  • this known phase-shifting device can be adjusted neither to 0 nor to 90. From this it follows that the angular range of the ignition is less than 90 and the output current of the controlled rectifier can be varied only from approximately 50% to 100%.
  • the trigger supplies an igniting pulse to the rectifier through the transformer.
  • the threshold of the trigger and the peak value of the alternating voltage must be the same and not more than half the maximum direct voltage.
  • the threshold of the trigger is no longer reached at 0 and the igniting pulse is just then not established when the full current is required by the rectifier on the ground of a control or regulating command. Furthermore, an ignition angle of 180 cannot then be obtained. If the alternating voltage is too high, the ignition angle can be adjusted neither to 0 nor to 180.
  • FIGURE 1 shows a circuit of the arrangement according to the invention
  • FIGURE 2 shows a vector diagram of the alternating voltages occurring in the said circuit
  • FIGURE 3 shows the voltages set up at the terminals of the circuit of FIGURE 1, and.
  • FIGURE 4 shows the condition occurring :at alternating voltages and/ or trigger voltages which are 5% higher or lower.
  • a voltage U is applied to the transformer which is in phase with the alternating anode voltage of the controlled rectifier tube, not shown.
  • a series circuit comprising resistor 2, capacitor 3 and resistor 1 is connected across the secondary winding of the transformer.
  • a resistor 5 and a diode 4 are serially connected between the center tap A of the transformer secondary and a point B in the above-mentioned series circuit.
  • the current I flowing in the series circuit leads the transformer secondary voltage U.
  • the voltage drop across resistors 1 and 2 is in phase with the current I and is shown in FIG. 2 by the vectors U and U
  • the voltage across capacitor 3 lags the current I by degrees and is represented by the vector U,.
  • the circuit is designed so that the voltage across the point A-E lags the secondary voltage U by approximately 15 degrees.
  • a 90 leading voltage (see FIG. 2) is set up between points A and D of the phase-shifting device comprising resistors 1, 2 and a capacitor 3. This voltage serves for the vertical control of the trigger and on which is superimposed, after rectification by means of the diode 4, the 15 lagging voltage set up between points A and E.
  • FIGURE 3 shows the two components of voltage separately, as well as the total voltage between points D and F compared with the controlled rectifier anode voltage.
  • the combination of the leading voltage, V,, and the rectified lagging voltage, V produce a control voltage, V having a sharply increased slope (compare the heavy line portion of the curve V with the dashed line portion).
  • a more reliable and accurate trigger voltage is thereby achieved.
  • the end of the superimposed phase indicated by cross-hatching, prevents the igniting pulse from passing over at the beginning of the angular range of ignition.
  • the nominal value of the trigger voltage may thus be chosen so that the 5% higher trigger voltage, due to the 5% lower alternating voltage, is just reached with certainty (FIGURE 4).
  • the deviation of the ignition angle with respect to the first extreme case is comparatively small because of the greater slope of the curve.
  • variable direct voltage necessary for adjusting the ignition .angle is superimposed on the alternating voltage applied to terminals D-F (FIGURE 1), which direct voltage may be derived from, for example, a direct-voltage source 6 through a potentiometer 7.
  • the sum of the direct and alternating voltage is thus set up before terminals F and G.
  • Terminals F and G are connected across e: the cathode and control electrode of the controlled rectifier to control the firing angle thereof.
  • the phase-shifted voltages can be derived from two separate phase-shifting devices.
  • the direct voltage is preferably constituted by the output voltage of the regulator.
  • it can be derived from, for example, a remote resistor.
  • a control circuit for a controlled rectifier of the type having an anode, a cathode, and a control electrode comprising means for applying an A.C. supply voltage to the anode-cathode path of said controlled rectifier, means for deriving an A.C. voltage which leads said A.C. supply voltage by approximately 90 degrees, means for deriving an A.C. voltage which lags said A.C. supply voltage by approximately 15 degrees, means for rectifying the lagging voltage to obtain a rectified half-wave voltage, means for combining said lagging rectified voltage and said derived leading A.C. voltage to produce a control voltage, a source of direct voltage, and means for supplying said control voltage and said direct voltage to said control electrode so as to control the conduction of said controlled rectifier.
  • a control circuit for a controlled rectifier of the type having an anode, cathode, and a control electrode comprising a source of alternating voltage coupled to the anode-cathode path of said controlled rectifier, means for deriving a first A.C. voltage which leads said alternating voltage by approximately 90 degrees and a second A.C. voltage which lags said alternating voltageby approximately 15 degrees, half-wave rectifier means arranged to rectify said second voltage to obtain a rectified half-wave voltage, means for combining said half-wave voltage and said first A.C.
  • a circuit as described in claim 2 wherein said voltage deriving means comprises first and second phase shifting means for deriving said leading and lagging voltages, respectively, from said alternating voltage source.
  • a circuit as described in claim 3 ilurther comprising control circuit means for delivering a control output voltage and means for deriving said variable direct voltage from said control circuit means output voltage.
  • a control circuit for a controlled rectifier of the type having an anode, cathode, and a control electrode comprising means for supplying an alternating voltage across the anode and cathode of said controlled rectifier, means for deriving first and second A.C. voltages which lead and lag said alternating voltage by approximately 90 degrees and 15 degrees, respectively, means for rectifying said second A.C. voltage to obtain a rectified half-wave voltage, means for combining said rectified half-wave voltage and said first A.C.
  • a control circuit for a controlled rectifier of the type having an anode, cathode, and a control electrode comprising means for supplying an alternating voltage across the anode and cathode of said controlled rectifier, means for deriving from said alternating voltage supplying means first and second A.C. voltages which lead and lag said alternating voltage by approximately degrees and 15 degrees, respectively, means for rectifying said second A.C. voltage to obtain a rectified half-Wave voltage, means forderiving a variable direct voltage, means for combining said rectified halfwave voltage, said first A.C. voltage and said variable direct voltage to obtain a control voltage which leads said alternating voltage, and means for supplying said control voltage to said controlled rectifier control electrode so as to control the conduction period thereof.
  • a control circuit for a controlled rectifier of the type having an anode, cathode, and a control electrode comprising a source of alternating voltage coupled to the anode-cathode path of said controlled rectifier, means for deriving a first A.C. voltage which leads said alternating voltage by approximately 90 degrees .and a second A.C. voltage which lags said alternating voltage by approximately 15 degrees, means for rectiflying said second A.C. voltage to obtain a rectified half-wave voltage, means for vectorially combining said rectified half-wave voltage and said first A.C. voltage to produce an alternating control voltage having a portion of its waveform distorted, and means for supplying said control voltage to said control electrode of the controlled rectifier.
  • a circuit as described in claim 8 further comprising means for supplying a variable direct voltage to said control electrode to adjust the bias level thereof and wherein said control voltage is distorted so as to increase the slope of a portion of its waveform.
  • a control circuit for a controlled rectifier of the type having an anode, cathode, and a control electrode said circuit comprising a source of alternating voltage coupled across the anode and cathode of said controlled rectifier, a transformer having a primary winding adapted to be connected to an alternating voltage which is in phase with said alternating voltage source and a center tapped secondary winding, a first series circuit comprising resistance and capacitance means connected across said secondary Winding to draw a leading current, a second series circuit comprising a resistor and diode connected between said center tap and a junction point of said first series circuit such that the voltage across said second series circuit lags the secondary voltage by approximately 15 degrees, a first output terminal connected to a second junction point of said first series circuit at which the voltage with respect to said center tap leads by approximately 90 degrees, a second output terminal connected to a junction point of said resistor, and means for coupling said output terminals to the cathode and control electrode of said controlled rectifier.
  • a circuit as described in claim 10 further comprising means for supplying a variable direct voltage to said control electrode to adjust the bias level thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Rectifiers (AREA)
  • Ac-Ac Conversion (AREA)
US413905A 1963-12-13 1964-11-25 Arrangement for igniting controlled rectifiers with the aid of pulses Expired - Lifetime US3299318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP33186A DE1213909B (de) 1963-12-13 1963-12-13 Anordnung zur Zuendung gittergesteuerter Gasentladungsroehren oder steuerbarer Halbleiterzellen mittels Impulse

Publications (1)

Publication Number Publication Date
US3299318A true US3299318A (en) 1967-01-17

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Application Number Title Priority Date Filing Date
US413905A Expired - Lifetime US3299318A (en) 1963-12-13 1964-11-25 Arrangement for igniting controlled rectifiers with the aid of pulses

Country Status (4)

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US (1) US3299318A (de)
AT (1) AT244458B (de)
DE (1) DE1213909B (de)
NL (1) NL6414184A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829257A (en) * 1987-02-20 1989-05-09 Cooper J Carl Method and apparatus for continuously shifting phase of an electronic signal
US6810550B1 (en) * 1999-04-28 2004-11-02 Henkel Kommanditgesellschaft Auf Aktien Toothbrush

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE555175A (de) * 1956-02-22
US2946942A (en) * 1955-07-01 1960-07-26 Amcel Propulsion Inc Thyratron control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1284869A (fr) * 1961-03-23 1962-02-16 Gen Electric Co Ltd Perfectionnements aux montages électriques comprenant des redresseurs contrôlés par des semi-conducteurs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946942A (en) * 1955-07-01 1960-07-26 Amcel Propulsion Inc Thyratron control system
BE555175A (de) * 1956-02-22

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829257A (en) * 1987-02-20 1989-05-09 Cooper J Carl Method and apparatus for continuously shifting phase of an electronic signal
US6810550B1 (en) * 1999-04-28 2004-11-02 Henkel Kommanditgesellschaft Auf Aktien Toothbrush

Also Published As

Publication number Publication date
DE1213909B (de) 1966-04-07
AT244458B (de) 1966-01-10
NL6414184A (de) 1965-06-14

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