GB1179761A - Improvements relating to Regulating Circuits - Google Patents
Improvements relating to Regulating CircuitsInfo
- Publication number
- GB1179761A GB1179761A GB321067A GB321067A GB1179761A GB 1179761 A GB1179761 A GB 1179761A GB 321067 A GB321067 A GB 321067A GB 321067 A GB321067 A GB 321067A GB 1179761 A GB1179761 A GB 1179761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- source
- control
- load
- voltage
- current
- 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
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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)
- Control Of Multiple Motors (AREA)
Abstract
1,179,761. Control of D.C. motors. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 18 Dec., 1967 [20 Jan., 1967], No. 3210/67. Heading H2J. [Also in Division G3] In a regulating circuit of the type which switches between two states to maintain a first quantity, e.g. voltage, at a value set by a first reference signal, this first reference signal is arranged to be modified when a second quantity, e.g. current, reaches a predetermined relationship with a second reference signal, whereby control in dependence upon the second quantity supersedes control in dependence upon the first quantity. As shown, a load 10, e.g. the traction motor of an electrically-driven vehicle, is supplied from a D.C. source 10 by way of a chopper regulator 8 and a current sensor 2. A sawtooth waveform from a source 1 is compared in a comparator 3 with an adjustable D.C. reference voltage from a source 4 which may be associated with the foot-pedal of the vehicle and the output from the comparator, applied to the regulator 8 over a pulse generator 7, determines the voltage applied to the load; if the load current exceeds a predetermined value, a second comparator 5 associated with a second reference source 6 produces an output which is applied to the source 4 to modify the reference voltage supplied thereby. Thus current control overrides voltage control when an excess current flows in the load.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB321067A GB1179761A (en) | 1967-01-20 | 1967-01-20 | Improvements relating to Regulating Circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB321067A GB1179761A (en) | 1967-01-20 | 1967-01-20 | Improvements relating to Regulating Circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1179761A true GB1179761A (en) | 1970-01-28 |
Family
ID=9754036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB321067A Expired GB1179761A (en) | 1967-01-20 | 1967-01-20 | Improvements relating to Regulating Circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1179761A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2293824A1 (en) * | 1974-12-03 | 1976-07-02 | Int Standard Electric Corp | Pulse width modulated converter circuit with linear sawtooth generator - has input voltage compensation with second generator fed from input and synchroniser |
US4471276A (en) * | 1980-06-13 | 1984-09-11 | Stephen Cudlitz | Electric motor speed controller and method |
-
1967
- 1967-01-20 GB GB321067A patent/GB1179761A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2293824A1 (en) * | 1974-12-03 | 1976-07-02 | Int Standard Electric Corp | Pulse width modulated converter circuit with linear sawtooth generator - has input voltage compensation with second generator fed from input and synchroniser |
US4471276A (en) * | 1980-06-13 | 1984-09-11 | Stephen Cudlitz | Electric motor speed controller and method |
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