GB1279838A - Improvements in or relating to control circuits for d.c. electric motors - Google Patents

Improvements in or relating to control circuits for d.c. electric motors

Info

Publication number
GB1279838A
GB1279838A GB52679/69A GB5267969A GB1279838A GB 1279838 A GB1279838 A GB 1279838A GB 52679/69 A GB52679/69 A GB 52679/69A GB 5267969 A GB5267969 A GB 5267969A GB 1279838 A GB1279838 A GB 1279838A
Authority
GB
United Kingdom
Prior art keywords
switch
capacitor
transistor
diode
pulses
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
Application number
GB52679/69A
Inventor
John Morton
Keith Drummond Stevens
Graham Spencer Thexton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cableform Ltd
Original Assignee
Cableform Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cableform Ltd filed Critical Cableform Ltd
Priority to GB52679/69A priority Critical patent/GB1279838A/en
Priority to SE14018/70A priority patent/SE365987B/xx
Priority to AU21181/70A priority patent/AU2118170A/en
Priority to ZA707059A priority patent/ZA707059B/en
Priority to JP45094048A priority patent/JPS5031246B1/ja
Priority to FR7038842A priority patent/FR2066640A5/fr
Priority to DE19702053859 priority patent/DE2053859A1/en
Publication of GB1279838A publication Critical patent/GB1279838A/en
Expired legal-status Critical Current

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
    • H02P7/28—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
    • H02P7/281—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 the DC motor being operated in four quadrants
    • 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
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
    • H02P3/10—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by reversal of supply connections
    • 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
    • H02P7/292—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 static converters, e.g. AC to DC
    • H02P7/293—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 static converters, e.g. AC to DC using phase control

Abstract

1279838 Control of D.C. motors CABLEFORM Ltd 12 Oct 1970 [28 Oct 1969] 52679/69 Heading H2J A motor, which has an armature A associated with diode D1 and field winding F, is supplied from battery B through thyristor switch S, a unit, responsive to pulses of armature voltage, starting to count from zero each time a fieldreversing switch FR moves into or through an "off" position. A relay RLA restricts the motor current when the counter operates between zero and a predetermined number, but permits full current at other times. The pulses of armature voltage are applied to a network R4, Z1, which ensures constant amplitude pulses. The counter comprises small capacitor C1, large capacitor C2, diode D2, and resistor R3 so that the charge on capacitor C2 increases with each pulse until diode D3 breaks down and transistor T1 conducts to energize relay RLA. The capacitor C2 is discharged through transistor T2, the transistor T1 being held conductive through resistor R1. Contacts RLA2 then change over the control voltage for the switch S from a low range to a high range, ensuring that the motor is stopped before a high range of current is applied. The relay RLA is de-energized when the switch FR passes through the "off" position, the control range being changed to low values suitable for braking.
GB52679/69A 1969-10-28 1969-10-28 Improvements in or relating to control circuits for d.c. electric motors Expired GB1279838A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB52679/69A GB1279838A (en) 1969-10-28 1969-10-28 Improvements in or relating to control circuits for d.c. electric motors
SE14018/70A SE365987B (en) 1969-10-28 1970-10-16
AU21181/70A AU2118170A (en) 1969-10-28 1970-10-16 Improvements in or relating to control circuits for d.c. electric motors.
ZA707059A ZA707059B (en) 1969-10-28 1970-10-16 Improvements in or relating to control circuit for d.c.electric motors
JP45094048A JPS5031246B1 (en) 1969-10-28 1970-10-27
FR7038842A FR2066640A5 (en) 1969-10-28 1970-10-28
DE19702053859 DE2053859A1 (en) 1969-10-28 1970-10-28 Control circuit for direct current electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52679/69A GB1279838A (en) 1969-10-28 1969-10-28 Improvements in or relating to control circuits for d.c. electric motors

Publications (1)

Publication Number Publication Date
GB1279838A true GB1279838A (en) 1972-06-28

Family

ID=10464851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52679/69A Expired GB1279838A (en) 1969-10-28 1969-10-28 Improvements in or relating to control circuits for d.c. electric motors

Country Status (7)

Country Link
JP (1) JPS5031246B1 (en)
AU (1) AU2118170A (en)
DE (1) DE2053859A1 (en)
FR (1) FR2066640A5 (en)
GB (1) GB1279838A (en)
SE (1) SE365987B (en)
ZA (1) ZA707059B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1388688A (en) * 1971-05-11 1975-03-26 Cableform Ltd Control circuits for dc series electric motors

Also Published As

Publication number Publication date
DE2053859A1 (en) 1971-05-06
JPS5031246B1 (en) 1975-10-08
SE365987B (en) 1974-04-08
ZA707059B (en) 1971-07-28
AU2118170A (en) 1972-04-20
FR2066640A5 (en) 1971-08-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee