GB556246A - Improvements in and relating to ward-leonard systems - Google Patents
Improvements in and relating to ward-leonard systemsInfo
- Publication number
- GB556246A GB556246A GB3847/42A GB384742A GB556246A GB 556246 A GB556246 A GB 556246A GB 3847/42 A GB3847/42 A GB 3847/42A GB 384742 A GB384742 A GB 384742A GB 556246 A GB556246 A GB 556246A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- motor
- voltage
- generator
- setting
- 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
- 230000005284 excitation Effects 0.000 abstract 4
- 238000004804 winding Methods 0.000 abstract 4
- 238000009434 installation Methods 0.000 abstract 1
- 230000001172 regenerating effect Effects 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
- 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
- H02P7/34—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 Ward-Leonard arrangements
- H02P7/347—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 Ward-Leonard arrangements in which only the generator field is controlled
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
556,246. Automatic control systems for electric motors. JUHLIN, G. A., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. March 23, 1942, No. 3847. [Class 38 (iv)] [Also in Group XXXVII] Speed.-The generator WG of a Ward-Leonard system, particularly for an electrical winder installation is controlled by a sensitive and rapidly responding auxiliary generator such as a metadyne or D.C. machine of armature reaction excited type EA so that if the speed of the motor M is not in conformity with the setting of a speed control member WER, differentially related components of the excitation of 'the auxiliary generator will rectify the error. One excitation winding EF2 may be subjected to a voltage representing the setting of the speed control member which may accordingly be coupled to a potentiometer element EGT and an opposed excitation winding EF1 subjected to a voltage representative of motor speed namely to the tachometer generator TGA. Alternatively a single excitation winding on the auxiliary generator may be subject to opposed voltages representative of the setting of the speed control member and of the motor speed. Fig. 2 (not shown) illustrates a complete system in which the metadyne has a further field winding excited in accordance with the difference between a predetermined voltage from a potentiometer and the voltage across a resistance in the armature circuit of the motor whereby a predetermined overload limitation is obtained under both normal and regenerative operation thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3847/42A GB556246A (en) | 1942-03-23 | 1942-03-23 | Improvements in and relating to ward-leonard systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3847/42A GB556246A (en) | 1942-03-23 | 1942-03-23 | Improvements in and relating to ward-leonard systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB556246A true GB556246A (en) | 1943-09-27 |
Family
ID=9766041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3847/42A Expired GB556246A (en) | 1942-03-23 | 1942-03-23 | Improvements in and relating to ward-leonard systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB556246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115378172A (en) * | 2022-08-23 | 2022-11-22 | 南京航空航天大学 | Magnetic circuit decoupling type hybrid excitation motor integrated with compensation winding |
-
1942
- 1942-03-23 GB GB3847/42A patent/GB556246A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115378172A (en) * | 2022-08-23 | 2022-11-22 | 南京航空航天大学 | Magnetic circuit decoupling type hybrid excitation motor integrated with compensation winding |
| CN115378172B (en) * | 2022-08-23 | 2025-09-19 | 南京航空航天大学 | Magnetic circuit decoupling type hybrid excitation motor integrated with compensation winding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES424116A1 (en) | Speed control system for a-c motors, which slows motor down when in overspeed condition and stops motor when in underspeed condition | |
| GB1535221A (en) | Electric current generator arrangements | |
| GB833965A (en) | Improvements in or relating to control systems for regulating the line voltage of a power source or power line | |
| GB556246A (en) | Improvements in and relating to ward-leonard systems | |
| GB1019720A (en) | Means for monitoring the operating speed of a motor | |
| US1621011A (en) | Motor-control system | |
| US2474647A (en) | Speed control of dynamoelectric machines | |
| GB1069419A (en) | Load balancing circuit arrangement for electrical machines | |
| GB907086A (en) | Automatic voltage control apparatus for dynamoelectric generators | |
| US2688114A (en) | Speed governor for direct current motors | |
| US3127541A (en) | Protective system for synchronous electrical machines | |
| US2367930A (en) | Control system | |
| US3165687A (en) | Automatic means for rotating a lagging or leading rotor of a synchronous machine | |
| US2356114A (en) | Control system | |
| GB823898A (en) | Improvements in magnetic amplifiers | |
| GB709835A (en) | Improvements relating to ward-leonard systems for winding engines | |
| GB869613A (en) | Improvements in and relating to a.c. motor control systems | |
| GB628828A (en) | Improvements in control systems for electric motors | |
| GB868763A (en) | Improvements in or relating to control arrangements for slip-ring induction motors | |
| GB802708A (en) | Improvements in or relating to electric motor control systems | |
| GB727929A (en) | Improvements in or relating to electro-magnetic pick-off devices | |
| GB568668A (en) | Improvements in electric motor control systems and in automatic compensation for ohmic drop in motor armatures | |
| GB1029426A (en) | Improvements in and relating to electric stepping devices | |
| GB677358A (en) | Improvements relating to electric motor control systems | |
| GB634756A (en) | Improvements relating to control systems for electric motors |