US701886A - Synchronizing alternators. - Google Patents
Synchronizing alternators. Download PDFInfo
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- US701886A US701886A US73041699A US1899730416A US701886A US 701886 A US701886 A US 701886A US 73041699 A US73041699 A US 73041699A US 1899730416 A US1899730416 A US 1899730416A US 701886 A US701886 A US 701886A
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- machines
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- phase
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
Definitions
- the object of the present invention is, to. '10 provide a phase-indicator for synchronizing I alternating-current generators, motors, .&c., and for coupling them in parallel relation to a'common circuit.
- 1 2 represent a plurality of alternating-current generators,and 3 3 two bus-bars connecting with a supply-circuit into which the alternators feed in parallel.
- I mean any device which gives an intelligible indication, visual, oral, or other- ;wise, of approach or recession in identity of Control- 40 phase of'the alternating currents.
- the phase-indicating device maybe of any '45 desired construction, that shown in Fig. 2 comprising an incandescent lamp inrthe secondary circuit-of a transformer, the primary terminals of which, 6 6, connect, respectively,-
- a 55 phase-indicator operated by a current-reduc ing transformer be employed, as such a device may be operated directly by the resultant cnrren't of the two machines.
- Fig. 1 where an 66 incandescentlamp 8 is placed. in shunt to a resistance which should be preferably non inductive, or at least of low inductance.
- a phase-indicatorfor synchronizing al- ,ternating current machines comprising an indicating device responsive to alternating currents, circuit connections in parallel be- I tween said device anda plurality of machines,
- a phase-indicator for synchronizing al ternating-current machines comprising an indicatingdevice responsive to; alternating currents, circuiticonnections in parallel between said device and a plurality'of machines, 9 5 current-reducin g devices in said parallel connections, and switches for coupling the several machines in parallel relation to a distribution-circuit.
- Aphase-indicator for synchronizing aloo ternating-current generators comprising a transformerin thesecondary circuit of which is included an indicating device and having its primary terminals connected in parallel relation to the two generators to he synchronized, a resistance in series with the trans former and means for coupling said generators in parallel relation to the supply-circuit.
- Means for coupling alternating-current machines in parallel relation to a common distribution-circuit comprising controlling switches for the several machines, a common phase-indicator for all the machines in parallel relation to their leads, and a currentreducing resistance in each parallel circuit, for the purpose described.
- a synchronizing device for alternatingcnrrent dynamo-electric machines consisting of a transformer with means for connecting the machines to be synchronized in parallel relation to its primary, and an indicating device in the secondary.
- a synchronizing device for alternating current dynamo-electric machines consisting of a transformer with means for connecting both machines to be synchronized on its pri-
Description
Patented lune ID R. E. HUTHSTEINER.
. SYNGHRO-NIZING ALTERNAT'O'RS.
(Application filed Sept. 14, 1899.
, 7 lnvnton Robert E. Huthsteiner.
(No Model.)
, Witnesses.)
:11: UNITED mm OFFICE.
ROBERT E. HUTHSTEINER, or SOHENEOTADY, NEW YORK, Assicn'on To THE GENERAL ELECTRIC COMPANY, A CORPORATION or NEW5YORK.
SYNCHRONIZIVNG ALTERNATo Rs.
' SPECIFICATION forming part of Letters Patent No. 701,886, dated June 10, 19 2. Application filed September 14, 1899. Serial No. 730.416. (No modeli) Y To all whom it may concern:' I
Be it known that LROBERT E. Horn-- STEINER, a citizen of the United States, residing at Schenectady,in the' county of Schenectady and State of New York, have invented I certain new and useful Improvements in Synchronizing Alternators, (Case No. 1,1'13,)of
which the following is a specification.
The object of the present invention is, to. '10 provide a phase-indicator for synchronizing I alternating-current generators, motors, .&c., and for coupling them in parallel relation to a'common circuit. I
I carryjont my inventionby. providing means for-coupling the terminals of like instantaneous sign of the severalm'achines with the terminals of a phase-indicator, interposing sufficient resistance or reac'tauce in the circuit to reduce the current value therein synchronizing devices embodying my im- 3o provements.
1 2 represent a plurality of alternating-current generators,and 3 3 two bus-bars connecting with a supply-circuit into which the alternators feed in parallel. The terminals of like instantaneoussign of the generators con-' I nect with the terminalsot aphase-indicator 4,
by which I mean any device which gives an intelligible indication, visual, oral, or other- ;wise, of approach or recession in identity of Control- 40 phase of'the alternating currents.
, ling-switches for cou pling, the generators with the bus-bars 3 3 are provided, as indicated Mat.1
The phase-indicating device maybe of any '45 desired construction, that shown in Fig. 2 comprising an incandescent lamp inrthe secondary circuit-of a transformer, the primary terminals of which, 6 6, connect, respectively,-
through non-inductive resistances 7 7 with 5o poles of like sign of. the two generators.
These resistances prevent a rush of current and current-reducing devicesjn said parallel through the phase-indicator .when the machine being synchronized is'just being started I j .7
It is not essential to" my invention that a 55 phase-indicator operated by a current-reduc ing transformer be employed, as such a device may be operated directly by the resultant cnrren't of the two machines.. 'Such an organization is indicated in Fig. 1, where an 66 incandescentlamp 8 is placed. in shunt to a resistance which should be preferably non inductive, or at least of low inductance. In coupling the, machines inparallel one inachineis'connected to the bus-bars, as indicated at 5, and the other-machine isstarted up.-- So long as the machines are out of phase the lamp prodncesa seriesof flasheswhile the machine is starting up and then glows with gradually-increasing luminosity, 70
and when-they get intotexact step the-lamp burns at full brilliancy. Theswitch 5? is then thrown, coupling the two machines in parallel. Inasmuch as the circuit controlling the phase-indicating deviceis now connected across the two bus-bars said; circuit will act as ashort circuit and'bewastefnlof "current. By employing a high non-inductive resistmice 7 7 the value of this waste may be re- 1 duced to a minimum and damagev to the indicator avoided. I
What Iclaim as new, and desire to secure by Letters Patent of thejUnited States, is-,
I 1. A phase-indicatorfor synchronizing al- ,ternating current machines, comprising an indicating device responsive to alternating currents, circuit connections in parallel be- I tween said device anda plurality of machines,
connections. y 4 2. A phase-indicator for synchronizing al ternating-current machines, comprising an indicatingdevice responsive to; alternating currents, circuiticonnections in parallel between said device and a plurality'of machines, 9 5 current-reducin g devices in said parallel connections, and switches for coupling the several machines in parallel relation to a distribution-circuit.
.3. Aphase-indicator for synchronizing aloo ternating-current generators, comprising a transformerin thesecondary circuit of which is included an indicating device and having its primary terminals connected in parallel relation to the two generators to he synchronized, a resistance in series with the trans former and means for coupling said generators in parallel relation to the supply-circuit.
4. Means for coupling alternating-current machines in parallel relation to a common distribution-circuit, comprising controlling switches for the several machines, a common phase-indicator for all the machines in parallel relation to their leads, and a currentreducing resistance in each parallel circuit, for the purpose described.
5. A synchronizing device for alternatingcnrrent dynamo-electric machines consisting of a transformer with means for connecting the machines to be synchronized in parallel relation to its primary, and an indicating device in the secondary.
(5. A synchronizing device for alternating current dynamo-electric machines consisting of a transformer with means for connecting both machines to be synchronized on its pri-
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73041699A US701886A (en) | 1899-09-14 | 1899-09-14 | Synchronizing alternators. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73041699A US701886A (en) | 1899-09-14 | 1899-09-14 | Synchronizing alternators. |
Publications (1)
Publication Number | Publication Date |
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US701886A true US701886A (en) | 1902-06-10 |
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Application Number | Title | Priority Date | Filing Date |
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US73041699A Expired - Lifetime US701886A (en) | 1899-09-14 | 1899-09-14 | Synchronizing alternators. |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2484374A (en) * | 1945-05-14 | 1949-10-11 | Union D Electricite | Apparatus for detecting breaks of synchronism between electric machines |
US3816814A (en) * | 1973-04-02 | 1974-06-11 | C Cooley | Magnetic phase difference meter |
-
1899
- 1899-09-14 US US73041699A patent/US701886A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2484374A (en) * | 1945-05-14 | 1949-10-11 | Union D Electricite | Apparatus for detecting breaks of synchronism between electric machines |
US3816814A (en) * | 1973-04-02 | 1974-06-11 | C Cooley | Magnetic phase difference meter |
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