GB756274A - Improvements in or relating to driving arrangements comprising electric motors and clutches - Google Patents
Improvements in or relating to driving arrangements comprising electric motors and clutchesInfo
- Publication number
- GB756274A GB756274A GB2292154A GB2292154A GB756274A GB 756274 A GB756274 A GB 756274A GB 2292154 A GB2292154 A GB 2292154A GB 2292154 A GB2292154 A GB 2292154A GB 756274 A GB756274 A GB 756274A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clutch
- coupled
- clutches
- relating
- tachometer generator
- 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
- 238000004804 winding Methods 0.000 abstract 3
- 230000006698 induction Effects 0.000 abstract 1
- 239000006247 magnetic powder Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/23—Circuits for controlling the lowering of the load
- B66C13/26—Circuits for controlling the lowering of the load by AC motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
- B66C2700/081—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists with AC motors
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
756,274. Control of A.C. motors. ELEKTRO-MECHANIK GES. Aug 6, 1954, No. 22921/54. Class 38(3) A driving arrangement for a winch comprises an induction motor 10 having a high rotor resistance 11, a magnetic powder clutch 13 or an eddy current clutch being coupled between the motor and the load. The power output of the drive is maintained constant despite changes in speed by means of a tachometer generator 15 which is coupled to the output shaft of the clutch and has its exciting winding connected in series with the energizing winding 17 of the clutch. These windings are supplied from an amplifier 16 the input voltage of which is represented by the difference between a reference voltage derived from potentiometer 18 and the armature voltage of the tachometer generator. The arrangement is such that the major part of the slip power is transformed into heat within the rotor resistance and only a small part within the clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2292154A GB756274A (en) | 1954-08-06 | 1954-08-06 | Improvements in or relating to driving arrangements comprising electric motors and clutches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2292154A GB756274A (en) | 1954-08-06 | 1954-08-06 | Improvements in or relating to driving arrangements comprising electric motors and clutches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB756274A true GB756274A (en) | 1956-09-05 |
Family
ID=10187210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2292154A Expired GB756274A (en) | 1954-08-06 | 1954-08-06 | Improvements in or relating to driving arrangements comprising electric motors and clutches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB756274A (en) |
-
1954
- 1954-08-06 GB GB2292154A patent/GB756274A/en not_active Expired
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