GB1252175A - - Google Patents
Info
- Publication number
- GB1252175A GB1252175A GB1252175DA GB1252175A GB 1252175 A GB1252175 A GB 1252175A GB 1252175D A GB1252175D A GB 1252175DA GB 1252175 A GB1252175 A GB 1252175A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motors
- selsyn
- rotor
- crane
- switches
- 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
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Control And Safety Of Cranes (AREA)
- Polyamides (AREA)
Abstract
1,252,175. Electric correspondence control. ALLMANNA SVENSKA ELEKTRISKA A. B. March 21, 1969 [Feb. 5, 1969], No. 14917/69. Heading G1N. [Also in Division G3] Apparatus for synchronizing the hoisting motors of two cranes lifting a single load includes a first selsyn 51 to the rotor, 17, of which a motor of a crane K1 is coupled, a differential converter D to the rotor 20 of which a crane K2 is coupled and a second selsyn 52 of which the angular displacement of the rotor 16 controls the speeds of the two motors by means of cam-operated switches 11, 13 and 12, 14. In use any difference in angular displacement of the two motors causes an unbalance voltage to be generated by the converter, which voltage is fed to the stator 15 of the second selsyn to cause operation of the switches. The speed control circuits are illustrated in Figs.2, 3 (not shown) and include the field windings (F1, F2) of Ward-Leonard sets for the hoisting motors. In an alternative embodiment (not shown) the operational positions of the second crane motor and the speed-control switches may be interchanged. It is stated that the slewing and/or buffing of the two cranes may be similarly controlled.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE150469A SE328386B (en) | 1969-02-05 | 1969-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1252175A true GB1252175A (en) | 1971-11-03 |
Family
ID=20258310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1252175D Expired GB1252175A (en) | 1969-02-05 | 1969-03-21 |
Country Status (7)
| Country | Link |
|---|---|
| DE (1) | DE1909102C3 (en) |
| ES (1) | ES365289A1 (en) |
| FI (1) | FI49012C (en) |
| FR (1) | FR2030297A1 (en) |
| GB (1) | GB1252175A (en) |
| NO (1) | NO130986C (en) |
| SE (1) | SE328386B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156100A (en) * | 1984-02-14 | 1985-10-02 | Toshiba Machine Co Ltd | Method and system for controlling synchronous drive systems |
-
1969
- 1969-02-05 SE SE150469A patent/SE328386B/xx unknown
- 1969-02-24 DE DE19691909102 patent/DE1909102C3/en not_active Expired
- 1969-02-27 NO NO82969A patent/NO130986C/no unknown
- 1969-03-12 FR FR6906972A patent/FR2030297A1/fr not_active Withdrawn
- 1969-03-21 GB GB1252175D patent/GB1252175A/en not_active Expired
- 1969-03-26 ES ES365289A patent/ES365289A1/en not_active Expired
-
1970
- 1970-02-02 FI FI28470A patent/FI49012C/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156100A (en) * | 1984-02-14 | 1985-10-02 | Toshiba Machine Co Ltd | Method and system for controlling synchronous drive systems |
Also Published As
| Publication number | Publication date |
|---|---|
| NO130986B (en) | 1974-12-09 |
| FI49012C (en) | 1975-03-10 |
| FR2030297A1 (en) | 1970-11-13 |
| FI49012B (en) | 1974-12-02 |
| NO130986C (en) | 1975-03-19 |
| DE1909102C3 (en) | 1974-10-31 |
| DE1909102A1 (en) | 1970-08-06 |
| DE1909102B2 (en) | 1972-08-24 |
| ES365289A1 (en) | 1971-02-16 |
| SE328386B (en) | 1970-09-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |