GB476174A - Improvements in and relating to systems of electric motor control - Google Patents
Improvements in and relating to systems of electric motor controlInfo
- Publication number
- GB476174A GB476174A GB1540436A GB1540436A GB476174A GB 476174 A GB476174 A GB 476174A GB 1540436 A GB1540436 A GB 1540436A GB 1540436 A GB1540436 A GB 1540436A GB 476174 A GB476174 A GB 476174A
- Authority
- GB
- United Kingdom
- Prior art keywords
- machines
- motor
- switch
- speed
- windings
- Prior art date
- 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
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
Abstract
476,174. Control of several motors. BRITISH THOMSON-HOUSTON CO., Ltd., and OVENS, G. June 2, 1936, No. 15404. [Class 38 (iii)] Apparatus for synchronizing a pair of machines 1, 4, having primary windings connected to a common source 2, comprises means 3, 5, for running the machines up to speed, a motor 7 with polyphase windings on its stator and rotor connected respectively to polyphase secondary windings on the two machines, a zero-speed device 8 mechanically coupled to the motor, and means by which at zero speed of the motor a relay 9 having a drop-out time delay operates to energize the operating coil of a switch 6 whereby the secondary windings of the machines 1, 4, are interconnected. The machines 1, 4, are coupled to respective motors 3, 5, and when they are interconnected by the switch 6 they maintain synchronism between the motors 3, 5. The windings of the motor 7 are connected to opposite sides of the switch 6, and the motor 7 drives an interrupter 8 comprising a cylinder divided into segments engaged by brushes connected across the coil of the relay 9. When the speeds of the machines 1, 4, are equal, the speed at which the interrupter 8 is driven falls to zero and the contacts 9a of the relay 9 close the energizing circuit of the switch 6, which maintains itself over contacts 6a. The system is applicable to any number of machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1540436A GB476174A (en) | 1936-06-02 | 1936-06-02 | Improvements in and relating to systems of electric motor control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1540436A GB476174A (en) | 1936-06-02 | 1936-06-02 | Improvements in and relating to systems of electric motor control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB476174A true GB476174A (en) | 1937-12-02 |
Family
ID=10058547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1540436A Expired GB476174A (en) | 1936-06-02 | 1936-06-02 | Improvements in and relating to systems of electric motor control |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB476174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139573A (en) * | 1962-07-12 | 1964-06-30 | United States Steel Corp | Plural motor synchronous tie starting system |
-
1936
- 1936-06-02 GB GB1540436A patent/GB476174A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139573A (en) * | 1962-07-12 | 1964-06-30 | United States Steel Corp | Plural motor synchronous tie starting system |
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