GB844363A - Improvements in and relating to electric control systems for a plurality of direct current motors - Google Patents
Improvements in and relating to electric control systems for a plurality of direct current motorsInfo
- Publication number
- GB844363A GB844363A GB2013655A GB2013655A GB844363A GB 844363 A GB844363 A GB 844363A GB 2013655 A GB2013655 A GB 2013655A GB 2013655 A GB2013655 A GB 2013655A GB 844363 A GB844363 A GB 844363A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- motor
- field
- winding
- load
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/30—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using magnetic devices with controllable degree of saturation, i.e. transductors
- H02P7/305—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using magnetic devices with controllable degree of saturation, i.e. transductors whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
Abstract
844,363. Automatic speed-control systems. ENGLISH ELECTRIC CO. Ltd. Oct. 9, 1956 [July 12, 1955], No. 20136/55. Class 38 (4). In a system for a plurality of D.C. electric motors arranged to drive independent consecutive sections of a material treating machine, which includes for each motor a speed reference regulator, a speed signal generator, and means whereby the speed is maintained in accordance with the setting of the regulator, the regulating means is also responsive to a third electrical quantity dependent on the load in a manner such that for any given setting of the speed reference regulator the speed of the motor decreases as the load increases, and there is provided for each motor, manually controlled field-regulating means and means arranged to reduce the magnitude of the third electrical quantity for any given value of motor load as the field excitation of the motor is reduced by the manually controlled regulating means. The speed of series motor 10a is controlled in accordance with the energization of an auxiliary field winding 10d by the difference between a reference voltage applied to leads 18 and 12 and the output of tachometer generator 17. The error signal is applied to the control winding 15b of a magnetic amplifier 15 which includes a further winding 15a opposed to the control winding and energized in accordance with the armature current. Ganged potentiometers 13, 16, 19 which are set according to the desired speed adjust the main motor field to a value such as will produce the required speed, reduce the effect of the winding 15a at lower speeds, and reduce the tachometer field 17b respectively. A stabilizing feedback field is also provided. The arrangement which is stated to be useful in a steel rolling mill is said to improve the speed regulation by increasing the error signal in response to load changes. In a modified arrangement described control is effected by a booster in the armature circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2013655A GB844363A (en) | 1955-07-12 | 1955-07-12 | Improvements in and relating to electric control systems for a plurality of direct current motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2013655A GB844363A (en) | 1955-07-12 | 1955-07-12 | Improvements in and relating to electric control systems for a plurality of direct current motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB844363A true GB844363A (en) | 1960-08-10 |
Family
ID=10140965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2013655A Expired GB844363A (en) | 1955-07-12 | 1955-07-12 | Improvements in and relating to electric control systems for a plurality of direct current motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB844363A (en) |
-
1955
- 1955-07-12 GB GB2013655A patent/GB844363A/en not_active Expired
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