GB892096A - Improvements in or relating to electrical systems for the automatic control of liftsor mine winders - Google Patents
Improvements in or relating to electrical systems for the automatic control of liftsor mine windersInfo
- Publication number
- GB892096A GB892096A GB10211/58A GB1021158A GB892096A GB 892096 A GB892096 A GB 892096A GB 10211/58 A GB10211/58 A GB 10211/58A GB 1021158 A GB1021158 A GB 1021158A GB 892096 A GB892096 A GB 892096A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- winding
- energized
- exciter
- speed
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/12—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, located at a control station for direct control movements, e.g. electric mining-hoist control systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Multiple Motors (AREA)
- Motor And Converter Starters (AREA)
Abstract
892,096. Control of D.C. motors. STARKSTROM - ANLAGENBAU ERFURT VEB. March 31, 1958 [Aug. 28, 1957], No. 10211/58. Class 38 (3). [Also in Group XXXV] An electric motor MF driving a double-cage lift is supplied from a Ward-Leonard generator G having an amplidyne exciter A, the motor being controlled to provide periods of constant acceleration, full speed, retardation, and creeping speed during a working cycle. Initially, a main winding I of the exciter is connected through a potentiometer P1 to a D.C. source PN and is assisted by a speed-responsive winding VI energized from a motor-driven tachometer generator TG. An exciter field winding V is energized in accordance with the acceleration of the motor through a transformer T1 and amplifier 24, and opposes the winding I for maintaining the acceleration constant. When the speed of the motor has increased to a predetermined value, the voltage of the tachometer generator exceeds a bias voltage provided by potentiometer P2 and rectifiers G1, so that a field winding II of the exciter is energized to oppose the winding I and to limit the speed of the motor. The lift is then driven at a steady speed under the control of the field windings I and II until the cages reach predetermined positions in the shaft whereupon the windings I, V are reversed and the winding II is disconnected for retarding the motor. When the voltage of the tachometer generator becomes less than that derived from potentiometer P3, a field winding III of the exciter is energized to oppose the winding I and to cause the motor to operate at creep speed. After the motor has stopped, a field winding VII of the exciter is energized to compensate for residual flux in the generator G. In addition, the exciter A has a compounding field winding IX which is energized in accordance with the motor current, and a field winding VIII for compensating for changes in the current. A further stabilization field winding IV is energized by the amplifier 24.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV13009A DE1109337B (en) | 1957-08-28 | 1957-08-28 | Automatic electrical control of mine conveyors with Leonard drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB892096A true GB892096A (en) | 1962-03-21 |
Family
ID=7574052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10211/58A Expired GB892096A (en) | 1957-08-28 | 1958-03-31 | Improvements in or relating to electrical systems for the automatic control of liftsor mine winders |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE566221A (en) |
| DE (1) | DE1109337B (en) |
| FR (1) | FR200242A (en) |
| GB (1) | GB892096A (en) |
-
0
- FR FR200242D patent/FR200242A/fr active Active
- BE BE566221D patent/BE566221A/xx unknown
-
1957
- 1957-08-28 DE DEV13009A patent/DE1109337B/en active Pending
-
1958
- 1958-03-31 GB GB10211/58A patent/GB892096A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1109337B (en) | 1961-06-22 |
| FR200242A (en) | |
| BE566221A (en) |
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