GB201177A - Creation of Inventions and Patents with Artificial Intelligence

GB201177A – Improvements in or relating to means for the coupling of alternating current dynamo-electric machines in parallel
– Google Patents

GB201177A – Improvements in or relating to means for the coupling of alternating current dynamo-electric machines in parallel
– Google Patents
Improvements in or relating to means for the coupling of alternating current dynamo-electric machines in parallel

Info

Publication number
GB201177A

GB201177A
GB18709/23A
GB1870923A
GB201177A
GB 201177 A
GB201177 A
GB 201177A
GB 18709/23 A
GB18709/23 A
GB 18709/23A
GB 1870923 A
GB1870923 A
GB 1870923A
GB 201177 A
GB201177 A
GB 201177A
Authority
GB
United Kingdom
Prior art keywords
alternator
lever
controlled
coil
relays
Prior art date
1922-07-20
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
GB18709/23A
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.)

Metropolitan Vickers Electrical Co Ltd

Original Assignee
Metropolitan Vickers Electrical Co Ltd
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.)
1922-07-20
Filing date
1923-07-20
Publication date
1923-11-15

1923-07-20
Application filed by Metropolitan Vickers Electrical Co Ltd
filed
Critical
Metropolitan Vickers Electrical Co Ltd

1923-11-15
Publication of GB201177A
publication
Critical
patent/GB201177A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

H—ELECTRICITY

H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

H02J3/00—Circuit arrangements for ac mains or ac distribution networks

H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers

H02J3/40—Synchronising a generator for connection to a network or to another generator

H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved

Abstract

201,177. Metropolitan – Vickers Electrical Co., Ltd., (Assignees of Bradshaw, W. M., and Ashbaugh, H.). July 20, 1922, [Convention date]. Regulation, automatic appara. tus for; systems depending on the use of two or more machines.-An alternator is connected up automatically to the bus-bar of another alternator by means operated in accordance with the speed of the incoming alternator, the phase relationship of the alternators, and the voltages of the alternators, and means are provided to control automatically the frequency of the incoming alternator to correspond with that of the bus-bars. An alternator 6, driven by a prime-mover 87, is connected up to the bus-bars 2, 3, 4 of an alternator 1 by means of a switch 57 the operating-coil 56 of which is controlled by a synchronizer 35 and by a voltage relay 60. The speed of the prime-mover 87 is controlled by a governor 8 the setting of which is controlled by a motor 13 controlled by relays 15, 16. Each relay is provided with a permanently energized holding coil 18, an operating coil 19 and a neutralizing coil 21. The relays normally occupy the positions shown under which conditions the motor 13 is short-circuited. The relays 15, 16 are controlled by a differential switch comprising contacts 33, 34 mounted on a lever 80, and a contact 32 operated by the wheel 27 of a differential mechanism 24. The lever 80 is controlled by a spring and an electromagnet 82 comprising two differentially wound coils 83, 84 and a polarizing coil 86. The coils 83, 84 are connected across the armature of the motor 13 and cause the lever 80 to move in one direction or the other in order that the circuit of the motor 13 may be broken earlier than it normally would be and so prevent hunting. The elements 25, 26 of the differential mechanism 24 are driven by synchronous motors 28, 29 supplied with currents from the alternator 1 and 6 respectively and under the control of an automatic or manual switch 31. The synchronizer 35 comprises a pair of solenoids 36, 37 the cores of which are pivoted to a lever 38, a segment 39 mounted on the same pivot as the lever 38 and carrying a contact strip 41, a forked member 47 engaging a pin on the segment 39 and operated through a dash-pot 44, and levers 45, 46 by the lever 38, a contact 42 on the lever 38 and a fixed contact 43. The solenoids 36, 37 are energized by a transformer 49 and transformers 51, 52 in such a manner that when the frequency of the current delivered by the alternator 6 is approximately the same as that of the alternator 1, the pull exerted by the solenoid 37 is grea:er than that exerted by the solenoid 36 and the brush 42 engages the strip 41 to energize the operating coil 56. If the approach to synchronism be slow, the dash-pot connection 44 will prevent the movement of the segment 39. If, however, the approach be rapid, the segment 39 is moved to cause an earlier engagement of the contact 42 and the strip 41. To prevent the operation of the switch 57 when the voltages of the alternators 1 and 6 differ, the operating-coil 56 is short-circuited when either of two relays 68, 69 are closed. The relays 68, 69 are controlled by a differential voltage relay 60 provided with means for preventing hunting of a motor 21 operating a rheostat-arm 72 controlling the energization of the alternator 6.

GB18709/23A
1922-07-20
1923-07-20
Improvements in or relating to means for the coupling of alternating current dynamo-electric machines in parallel

Expired

GB201177A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US201177XA

1922-07-20
1922-07-20

Publications (1)

Publication Number
Publication Date

GB201177A
true

GB201177A
(en)

1923-11-15

Family
ID=21796855
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB18709/23A
Expired

GB201177A
(en)

1922-07-20
1923-07-20
Improvements in or relating to means for the coupling of alternating current dynamo-electric machines in parallel

Country Status (1)

Country
Link

GB
(1)

GB201177A
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CN112421322A
(en)

2020-11-11
2021-02-26
欧友堂
Communication power supply controlled by electromagnetic principle

1923

1923-07-20
GB
GB18709/23A
patent/GB201177A/en
not_active
Expired

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

CN112421322A
(en)

2020-11-11
2021-02-26
欧友堂
Communication power supply controlled by electromagnetic principle

Contact information