GB791076A - Improvements in and relating to electric winder control systems - Google Patents
Improvements in and relating to electric winder control systemsInfo
- Publication number
- GB791076A GB791076A GB1620954A GB1620954A GB791076A GB 791076 A GB791076 A GB 791076A GB 1620954 A GB1620954 A GB 1620954A GB 1620954 A GB1620954 A GB 1620954A GB 791076 A GB791076 A GB 791076A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- resistor
- motor
- torque
- winding motor
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/24—Variable impedance in stator or rotor circuit
- H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance
Abstract
791,076. Automatic speed control systems. BRITISH THOMSON-HOUSTON CO., Ltd. May 16, 1955 [June 1, 1954], No. 16209/54. Class 38 (4). [Also in Group XXXVII] A winding motor 1 has its rotor resistance 2 controlled by means of a pilot motor 3 supplied from an amplidyne 4, a field winding 5 of which is energized in accordance with the speed of the winding motor. For this purpose, a reversing contactor 23 connects a fixed voltage source through resistor 24 to two paralleled branch circuits, one comprising resistor 25 and field winding 5, and the other comprising a variable resistor 27 as well as a tachometer generator 29 driven by the winding motor. An additional' field winding 6 on the amplidyne is opposed to the winding 5 to produce a torque-limiting effect on the winding motor, the winding 6' being supplied from a magnetic amplifier 7 through a reversing contactor 32. The control coil 8 of the amplifier is excited in proportion to the stator current of the motor 1 through a current transformer 12 and a rectifier 12a, the output terminals of the rectifier being shunted' by a variable resistor 14 and fixed resistor 13. A rectifier 10 and reference voltage source 9 are connected in series with the coil 8. When the winding motor is stalled, the resistor 14 is adjusted to provide the required starting torque after the brake has been removed. The removal of the brake short-circuits the section 14, the fixed section 13' remaining in circuit so that the torque is limited to a different value after the winding motor has been started. A single lever may be used to adjust both the resistances T4 and 27, so that, on starting the lever is set to provide the torque necessary to start the load, and, on release of the brakes, the lever is moved' to the required speed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1620954A GB791076A (en) | 1954-06-01 | 1954-06-01 | Improvements in and relating to electric winder control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1620954A GB791076A (en) | 1954-06-01 | 1954-06-01 | Improvements in and relating to electric winder control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB791076A true GB791076A (en) | 1958-02-26 |
Family
ID=10073134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1620954A Expired GB791076A (en) | 1954-06-01 | 1954-06-01 | Improvements in and relating to electric winder control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB791076A (en) |
-
1954
- 1954-06-01 GB GB1620954A patent/GB791076A/en not_active Expired
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