US1633831A - Regulating system - Google Patents

Regulating system Download PDF

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Publication number
US1633831A
US1633831A US707850A US70785024A US1633831A US 1633831 A US1633831 A US 1633831A US 707850 A US707850 A US 707850A US 70785024 A US70785024 A US 70785024A US 1633831 A US1633831 A US 1633831A
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relay
circuit
exciter
relays
controlling
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US707850A
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Louis W Thompson
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General Electric Co
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General Electric Co
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/24Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator

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  • My invention relates to regulating Systems, and hasfor its object the provislon of an improved regulator which comprises an anti-hunting devie'of rugged and simple construction.
  • anti-hunting means designed to eliminate eriodic pulsations or changes in an electrical condition of the circuit to be controlled.
  • these anti-hunting means have comprised a relay or a relay are operated to control the efiective field re-' slstance of the exciter.
  • the tubes 12 and 13 are provided with coil arranged to anticipate and obviate the plates and 16 respectively and with fila 60 production of a condition apt to produce periodic pulsations in voltage and current of 15 the circuit to be regulated.
  • the use of such a relay or relay coil is rendered unnecessary and the construction of the regulator as a whole is greatly simplified.
  • the drawing shows an alternating current machine 1, comprising-a field windmg 2 and an armature winding 3 operatively associated with the polyphase line 4.
  • Thefield winding 2 is arranged to be supplied with current from an exciter 5 through an adjust-able resistor 6.
  • the exciter 5 comprises an armature winding 7 and a field winding 8 adapted to be connected in series 1 with a field resistor 9 between the exciter airmatur'e terminals.
  • the efiective resistance of the :exciter field circuit is regulated in accordance with the .voltage of the polyphasegjine 4.
  • a relay 21 comprising a coil 22 and an armature 23.
  • the relay 21 is provided to control operation of the relays 24 and 25 '10 which are arranged to short-circuit different portions of the exciter field rheostat 9.
  • the relays 24 and 25 are provided with operating coils 26l and 27 arranged to operatethe 'armatures 28 and ,29 respectively.
  • the armature 28 rests upon the memberv 30 which is pivoted at the point 31 and is held against the premure of a spring 32 to cause engagement of the relay contact 34.
  • the armature 28 is raised and the contact 34 is disengaged by the spring 32.
  • the operation of the relay 25 is similar to that of the relay 24 and will be readily understood without 'further' explanation. ll If desired, the relays 24 and 25 may be designed to have difierent degrees of sensitivity so that they operate in succession to short circuit different portions of the rheostat 9.
  • the armature 23 of the relay 21 is operatively associated with a'member 35- ivoted at the point 36 and provided at its le hand. end with a contact 37 arranged to cooperate with a contact 38 for controllin the. con- 96 nection of the relay coils 26 an 27 to the armature terminals of the exciter 5.
  • the member is also provided with a back contact 39 for controlling the resistance connected in series with filaments of the tubes 12 and 13 to prevent hunting in a manner hereinafter explained.
  • the exciter field circuit resistance is raised to its maximum value.
  • the efiective resistance of the exciter field circuit is determined by the vibratory action of the relays 21, 24 and 25. These relays are'designed to respond to slight variations from the normal voltage of the line 4 and by the rapidity of their vibration determine the proportion of time during which the exciter field resistor .is short circuited. In this manner, variations in the voltage of'the line 4 are maintained within narrow limits. J r
  • the relay 21 functions both to control energization of the relays 24 and 25 and to actuate anti-hunting means comprising filamentresistors 19 and 20 and back contact ing, v p
  • An electric circuit regulator comprisin a relay for causing a change to be produce in anelectrical condition of a circuit to be regulated, an electron discharge device con-' nected to respond to variations in the electrical condition of said circuit'for controlling desire to secure the actuation of said relay, and means operable in response to actuation ofsaid relay for controlling said device to prevent huntmg.
  • a regulator for an electric circuit comprising a relay for causing a change to be produced in an electrical condition of said circuit, a hot cathode tube operably associated with said circuit for controlling the actuation of said relay in accordance with variations in the electrical condition of said circuit, and means operable in response to actuation of said rela for changing the temperature of the cat ode of said tube for preventing hunting.
  • An electric circuit regulator comprising a relay for causing a change to be produced in an electrical condition of said circuit, a vacuum tube including a, filament operably associated with said clrcuit for controlling the actuation of said relay, and a back contact arranged to cooperate with said relay and said tube for increasing thefilament circuit resistance of said tube in response to actuation ofisaid relay.
  • a regulating system of the type wherein. a vibratory relay is arranged to control a condition to be regulated, an electron discharge device connected to vary the energization of said relay in accordance with variations in said ondition, and means controlled by said relay for controlling the amount of electron discharge to vary the energization of said relay to prevent huntin a relay isarranged to control a condition to be regulated, a space discharge device of the thermlonic type for controlling the energization of said relay in accordancewith trolling the energization of said means, a
  • hot cathode device arranged to have its plate voltage and cathode temperature controlled 1n accordance with said condition, and means controlled by said relay to vary the effect of said condition on said temperature.
  • a re latinfg system wherein means are provided dr regulating an electrical condition of a circuit, comprising arelay for controlling the energization of said means, a

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Description

' 1,633 11 June 28,1927. Lu W THOMPSQN 3 REGULATING SYSTEM Filed April 21, 1924 Inventor; Louis W Thompson His Attorney.
mama June 28,1927.
UNITED STATES PATENT "OFFICE. p
LOUIS W. THOIPSON, OF SOHENEGTATJY, NEW YORK, ASSIGNOB 130 GENERAL mo- .lBIG COMPANY, A CORPORATION OF NEW YORK.
' BIG'U'LATING SYSTEM.
i am filed April 21, 19334. Serial no. 707,350,
My invention relates to regulating Systems, and hasfor its object the provislon of an improved regulator which comprises an anti-hunting devie'of rugged and simple construction.
It is customary to provide a regulator with anti-hunting means designed to eliminate eriodic pulsations or changes in an electrical condition of the circuit to be controlled. In the past these anti-hunting means have comprised a relay or a relay are operated to control the efiective field re-' slstance of the exciter. I
I have shown two electron dischar e tubes 12 and 13 associated with the secon ary 14 of the transformer 10. It will be ap a'rent. however, that two tubes are require only where it is desired to rectify both sides of 65 the alternatin current wave and thus' to" avoid inoperatlveness of the regulating apparatus, due to failure of one of theftubes.) The tubes 12 and 13 are provided with coil arranged to anticipate and obviate the plates and 16 respectively and with fila 60 production of a condition apt to produce periodic pulsations in voltage and current of 15 the circuit to be regulated. In accordance with my invention, the use of such a relay or relay coil is rendered unnecessary and the construction of the regulator as a whole is greatly simplified.
My lIlVGIltlOIhWlll be better understood on reference to the following description when considered in connection with the accompanying drawing and its scope will .be pointed out in the appended clalms. Referring to the rawing, the single figure thereof is a diagrammatic showing of a'regulating system wherein my invention has been embodied.
The drawing shows an alternating current machine 1, comprising-a field windmg 2 and an armature winding 3 operatively associated with the polyphase line 4. Thefield winding 2 is arranged to be supplied with current from an exciter 5 through an adjust-able resistor 6. The exciter 5 comprises an armature winding 7 and a field winding 8 adapted to be connected in series 1 with a field resistor 9 between the exciter airmatur'e terminals. The efiective resistance of the :exciter field circuit is regulated in accordance with the .voltage of the polyphasegjine 4. This result is accomplished -through a transformer 10 hav ng its pri- .mary' winding 11 connected to the polyphase line 4 and its secondary winding associated with one or more space discharge devices of the thermionic type or electron discharge I "tubes through WhlCh a plurality of relays ments 17 and 18,'each ada ted tobe sup-l plied with heating current i rom a different section of the secondary winding 14. -A resistor 19 is connected in series with the fila ment 17 and a like resistor 20 is connected in 68 series with the filament 18. 5
Current from the tubes 12 and 13 is supplied to a relay 21 comprising a coil 22 and an armature 23. The relay 21 is provided to control operation of the relays 24 and 25 '10 which are arranged to short-circuit different portions of the exciter field rheostat 9. The relays 24 and 25 are provided with operating coils 26l and 27 arranged to operatethe ' armatures 28 and ,29 respectively. When 7 the coil 26 is not energized, the armature 28 rests upon the memberv 30 which is pivoted at the point 31 and is held against the premure of a spring 32 to cause engagement of the relay contact 34. When the coil 26 0o isv energized, the armature 28 is raised and the contact 34 is disengaged by the spring 32. The operation of the relay 25 is similar to that of the relay 24 and will be readily understood without 'further' explanation. ll If desired, the relays 24 and 25 may be designed to have difierent degrees of sensitivity so that they operate in succession to short circuit different portions of the rheostat 9.
The armature 23 of the relay 21 is operatively associated with a'member 35- ivoted at the point 36 and provided at its le hand. end with a contact 37 arranged to cooperate with a contact 38 for controllin the. con- 96 nection of the relay coils 26 an 27 to the armature terminals of the exciter 5. The member is also provided with a back contact 39 for controlling the resistance connected in series with filaments of the tubes 12 and 13 to prevent hunting in a manner hereinafter explained.
The operation of my invention will now be readily understood. If the voltage of the line 4 is slightly below normal, the relays 21,
24 and 25 will besin the positions indicated and all of the resistor 9 will be excluded from the field circuit of the exciter 5. Under these conditions, the excitation of the ma chine 1 is a maximum and the voltage of the line 4 will tend to rise. If this voltage ex ceeds its normal value, sufficient current to raise the armature 23 and close the contacts '37 and 38 is supplied through the tubes 12 and 13 to the coil 22. When this occurs, the coils of the relays 24 and 25 areenergized and the more sensitive of these relays, relay 24 for example, is opened to increase the resistance of the exciter field circuit.
and the exciter field circuit resistance is raised to its maximum value. The efiective resistance of the exciter field circuit is determined by the vibratory action of the relays 21, 24 and 25. These relays are'designed to respond to slight variations from the normal voltage of the line 4 and by the rapidity of their vibration determine the proportion of time during which the exciter field resistor .is short circuited. In this manner, variations in the voltage of'the line 4 are maintained within narrow limits. J r
The relay 21 functions both to control energization of the relays 24 and 25 and to actuate anti-hunting means comprising filamentresistors 19 and 20 and back contact ing, v p
6. A regulating system of the type where- 39 throughwhich these resistors are altogether or partially'short-circuited when the relay 21 is in its illustrated open position. Upon closure of the relay 21, the resistance of the filament circuit is increased. This reduces the current supplied through the tubes to the operating coil 22 and accelerates the opening of the relay 21, thereby anticipating abnormal pulsations in the voltage of the line and preventing hunting. J
What I claim as new and by Letters Patent of the United States is:
1. An electric circuit regulator comprisin a relay for causing a change to be produce in anelectrical condition of a circuit to be regulated, an electron discharge device con-' nected to respond to variations in the electrical condition of said circuit'for controlling desire to secure the actuation of said relay, and means operable in response to actuation ofsaid relay for controlling said device to prevent huntmg.
2. A regulator for an electric circuit comprising a relay for causing a change to be produced in an electrical condition of said circuit, a hot cathode tube operably associated with said circuit for controlling the actuation of said relay in accordance with variations in the electrical condition of said circuit, and means operable in response to actuation of said rela for changing the temperature of the cat ode of said tube for preventing hunting.
' 3. An electric circuit regulator comprising a relay for causing a change to be produced in an electrical condition of said circuit, a vacuum tube including a, filament operably associated with said clrcuit for controlling the actuation of said relay, and a back contact arranged to cooperate with said relay and said tube for increasing thefilament circuit resistance of said tube in response to actuation ofisaid relay.
4. The combination of an electric circuit, a dynamo electric machine operably associated with said circuit and an exciter for supplying the field excitation of said .machine, means for regulatingsaid circuit, said means comprising a relay for regulating the field current of said exciter, electron discharge means operably associated with said circuit for controlling the actuation of said relay, and means operable in response to actuation of said relay for controlling said electron discharge means to prevent hunting.
5. A regulating system of the type wherein. a vibratory relay is arranged to control a condition to be regulated, an electron discharge device connected to vary the energization of said relay in accordance with variations in said ondition, and means controlled by said relay for controlling the amount of electron discharge to vary the energization of said relay to prevent huntin a relay isarranged to control a condition to be regulated, a space discharge device of the thermlonic type for controlling the energization of said relay in accordancewith trolling the energization of said means, a
hot cathode device arranged to have its plate voltage and cathode temperature controlled 1n accordance with said condition, and means controlled by said relay to vary the effect of said condition on said temperature.
1,esa,ea1
8. A re latinfg system wherein means are provided dr regulating an electrical condition of a circuit, comprising arelay for controlling the energization of said means, a
5 hot cathode device for controlling the actuation of said relay, means including a transformer connected to said circuit to control the plate voltage and cathode temperature of said device in accordance 'with said condition, and means controlled b said relay to vary 10 the effect of said condi'tlon on said temperature.
In witness whereof, I have hereunto set my hand this 19th day of April 1994.
LOUIS w. THOMPSON.
US707850A 1924-04-21 1924-04-21 Regulating system Expired - Lifetime US1633831A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551357A (en) * 1949-02-26 1951-05-01 Goldberg & O Brien Electric Co Regeneration control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551357A (en) * 1949-02-26 1951-05-01 Goldberg & O Brien Electric Co Regeneration control system

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