GB1177072A - Improvements relating to Electric Motor Control Systems - Google Patents
Improvements relating to Electric Motor Control SystemsInfo
- Publication number
- GB1177072A GB1177072A GB3367366A GB3367366A GB1177072A GB 1177072 A GB1177072 A GB 1177072A GB 3367366 A GB3367366 A GB 3367366A GB 3367366 A GB3367366 A GB 3367366A GB 1177072 A GB1177072 A GB 1177072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- circuit
- accelerator
- energized
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 abstract 4
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
- H02P7/28—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 semiconductor devices
- H02P7/285—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 semiconductor devices controlling armature supply only
- H02P7/29—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 semiconductor devices controlling armature supply only using pulse modulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
1,177,072. Control of D.C. motors. CABLEFORM Ltd. 24 Dot 1967 [26 July, 1966], No.33673/66. Heading H2J. In a system wherein the speed of a motor 20 is controlled by an accelerator which varies the duty factor of a thyristor 12 in the supply circuit, direction is selected by relays 3, 4 which can be energized on the one hand through a manual preselector switch 50 but not through contacts 46/1 associated with the accelerator or on the other hand through a holding circuit including the latter but not the former. Thus, direction can be selected or changed only when the accelerator is at zero speed position. The thyristor circuit is of the type having a commutating thyristor and capacitor which is charged through an inductor during " on " periods. The direction relays 3, 4 switch the motor field 21 and their circuit includes a seat switch 49 and mechanical brake switch 220. A relay 2 controlling the charging of the commutating capacitor is energized whenever a direction relay is energized, and a " driving relay " 10 which is energized when accelerator contacts 46/1 close, closes only after a delay (by capacitor 226) so that a relay 6 controlling the triggering circuit cannot close before the direction relays. In Fig. 2 (not shown), the charging circuit for the commutating capacitor is modified and the relay 2 omitted. Other features of the system, including dynamic braking, are as described in Specification 1,177,071.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3367366A GB1177072A (en) | 1966-07-26 | 1966-07-26 | Improvements relating to Electric Motor Control Systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3367366A GB1177072A (en) | 1966-07-26 | 1966-07-26 | Improvements relating to Electric Motor Control Systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1177072A true GB1177072A (en) | 1970-01-07 |
Family
ID=10355951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3367366A Expired GB1177072A (en) | 1966-07-26 | 1966-07-26 | Improvements relating to Electric Motor Control Systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1177072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933611A (en) * | 1988-04-21 | 1990-06-12 | Yale Materials Handling Corporation | High torque inhibitor |
| US5132598A (en) * | 1988-04-21 | 1992-07-21 | Yale Materials Handling Corporation | High torque inhibitor |
-
1966
- 1966-07-26 GB GB3367366A patent/GB1177072A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4933611A (en) * | 1988-04-21 | 1990-06-12 | Yale Materials Handling Corporation | High torque inhibitor |
| US5132598A (en) * | 1988-04-21 | 1992-07-21 | Yale Materials Handling Corporation | High torque inhibitor |
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