GB799892A - Improvements in or relating to electric motor controllers - Google Patents
Improvements in or relating to electric motor controllersInfo
- Publication number
- GB799892A GB799892A GB1363/55A GB136355A GB799892A GB 799892 A GB799892 A GB 799892A GB 1363/55 A GB1363/55 A GB 1363/55A GB 136355 A GB136355 A GB 136355A GB 799892 A GB799892 A GB 799892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potentiometer
- voltage
- motor
- thyratron
- armature
- 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
- H02P7/24—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 discharge tubes or semiconductor devices
- H02P7/26—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 discharge tubes or semiconductor devices using discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
799,892. Automatic speed control systems. IGRANIC ELECTRIC CO., Ltd. Jan. 17, 1955 [Jan. 25, 1954], No. 1363/.55. Class 38 (4). To maintain constant the speed of a D.C. motor the armature of which is supplied through a thyratron 14 from an A.C. source L<SP>1</SP>, L2, the armature voltage is applied to the grid-cathode circuit of thyratron 14 in opposition to the direct voltage output of a potentiometer 16 the setting of which determines motor speed. A direct voltage developed across a resistor 40 by a rectifier 50 opposes the voltage from potentiometer 16 so that a reference voltage of either polarity may be set up by the adjustment of potentiometer 16. A phase-shifted alternating voltage from a potentiometer 42, connected to the centre tap of a supply transformer winding 24, is also included in the grid-cathode circuit of thyratron 14 to enable the effective amplification of the system to be varied. A resistance-inductance network 34 serves to improve the form factor of the armature current. Acceleration of the motor is controlled by the time constant of a resistance-capacity network 34, 72 through which the voltage from potentiometer 16 builds up after the motor has been started by the energization of a relay 18.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US799892XA | 1954-01-25 | 1954-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB799892A true GB799892A (en) | 1958-08-13 |
Family
ID=22154082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1363/55A Expired GB799892A (en) | 1954-01-25 | 1955-01-17 | Improvements in or relating to electric motor controllers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB799892A (en) |
-
1955
- 1955-01-17 GB GB1363/55A patent/GB799892A/en not_active Expired
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