GB748853A - Improvements relating to speed control of direct-current motors - Google Patents
Improvements relating to speed control of direct-current motorsInfo
- Publication number
- GB748853A GB748853A GB3324153A GB3324153A GB748853A GB 748853 A GB748853 A GB 748853A GB 3324153 A GB3324153 A GB 3324153A GB 3324153 A GB3324153 A GB 3324153A GB 748853 A GB748853 A GB 748853A
- Authority
- GB
- United Kingdom
- Prior art keywords
- field
- motor
- speed control
- voltage
- direct
- 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 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
748,853. Automatic speed control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 30, 1953, No. 33241/53. Drawings to Specification. Class 38 (4). The invention relates to systems of the kind in which the speed of a D.C. motor is controlled in accordance with the difference between its terminal voltage and a reference voltage, by varying the supply to the motor armature (e.g. from a Ward-Leonard generator or gridcontrolled rectifier); the field of the motor being supplied from a substantially constant source. According to the invention a further control signal is provided to compensate for changes in the motor field current due to variations of the supply or variations in resistance of the field winding. As described with reference to a Ward- Leonard system, Fig. 4 (not shown), the compensating signal is obtained from the voltage drop across a resistor in series with the motor, field. Alternatively the motor field exciter may be automatically controlled in accordance with the field voltage and current, Figs. 6 and 7 (not shown), and the speed control reference voltage taken from the field-exciter. Specification 748,841 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3324153A GB748853A (en) | 1953-11-30 | 1953-11-30 | Improvements relating to speed control of direct-current motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3324153A GB748853A (en) | 1953-11-30 | 1953-11-30 | Improvements relating to speed control of direct-current motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB748853A true GB748853A (en) | 1956-05-09 |
Family
ID=10350369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3324153A Expired GB748853A (en) | 1953-11-30 | 1953-11-30 | Improvements relating to speed control of direct-current motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB748853A (en) |
-
1953
- 1953-11-30 GB GB3324153A patent/GB748853A/en not_active Expired
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