GB957011A - Improvements in or relating to electric motor control systems - Google Patents
Improvements in or relating to electric motor control systemsInfo
- Publication number
- GB957011A GB957011A GB2451359A GB2451359A GB957011A GB 957011 A GB957011 A GB 957011A GB 2451359 A GB2451359 A GB 2451359A GB 2451359 A GB2451359 A GB 2451359A GB 957011 A GB957011 A GB 957011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- series
- voltage
- booster
- resistor
- 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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Charge By Means Of Generators (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
957,011. Control of motors; boosting by dynamo-electric machines. JOHN BROWN & CO. Ltd., and E. M. LANGHAM. Sept. 20, 1960 [July 16, 1959], No. 24513/59. Headings H2H and H2J. So that a squirrel cage induction motor 11, e.g. for a fan in an inaccessible position, or for traction, may have a characteristic similar to that of a D.C. series motor, it is supplied from an A.C. generator 12 whose field 13 is in series with a D.C. series motor 15 which drives it. The D.C. motor circuit may also include a resistor 19 (Fig. 1, not shown), such that the voltage drop across the circuit equals the back e.m.f. of the motor at the middle of its speed range, to ensure an approximately constant power output. As shown, this resistor is replaced by a constant speed negative booster 23. In addition, to a series field winding 21, the booster may have a winding 25 in series with a rectifier R2 and a battery B1 across the D.C. supply; the battery voltage is such that, if the supply voltage is at a minimum, no current flows through field winding 25, but if this voltage rises a current flows in a direction to cause the " booster " to deduct the additional voltage, so that the voltage at the motor terminals remains constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2451359A GB957011A (en) | 1959-07-16 | 1959-07-16 | Improvements in or relating to electric motor control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2451359A GB957011A (en) | 1959-07-16 | 1959-07-16 | Improvements in or relating to electric motor control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB957011A true GB957011A (en) | 1964-05-06 |
Family
ID=10212833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2451359A Expired GB957011A (en) | 1959-07-16 | 1959-07-16 | Improvements in or relating to electric motor control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB957011A (en) |
-
1959
- 1959-07-16 GB GB2451359A patent/GB957011A/en not_active Expired
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