GB1460741A - - Google Patents

Info

Publication number
GB1460741A
GB1460741A GB721074A GB721074A GB1460741A GB 1460741 A GB1460741 A GB 1460741A GB 721074 A GB721074 A GB 721074A GB 721074 A GB721074 A GB 721074A GB 1460741 A GB1460741 A GB 1460741A
Authority
GB
United Kingdom
Prior art keywords
motor
thyristor
regulator
members
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
Application number
GB721074A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB721074A priority Critical patent/GB1460741A/en
Priority to NL7411555A priority patent/NL165345C/en
Priority to AU72983/74A priority patent/AU495467B2/en
Priority to DE19742442244 priority patent/DE2442244A1/en
Priority to FR7430499A priority patent/FR2243547A1/fr
Priority to CH1225774A priority patent/CH587587A5/xx
Priority to CA209,018A priority patent/CA1011391A/en
Publication of GB1460741A publication Critical patent/GB1460741A/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
    • 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
    • H02P3/14—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 regenerative braking
    • 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
    • H02P7/298—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 and field supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

1460741 Control of DC motors LANSING BAGNALL Ltd 20 Aug 1974 [10 Sept 1973 18 Feb 1974] 42432/73 and 7210/74 Heading H2J A D.C. motor 5 having a series field winding 7 and, if desired, a further field winding 28, is controlled by a thyristor chopper circuit 9-14 and a change-over switch 4 to either take power from a D.C. source 3 or return it thereto during regenerative braking. With switch contacts 4a, 20 engaging as shown, current flows from the source 3 through members 4, 5, 6, 8 and 7 when thyristor 9 is conductive, turn off of the latter by a regulator 22 causing circulating current to flow through diodes 15, 27. To brake the motor, switch contacts 4a, 21 are engaged to cause the EMF generated by the motor to flow in a circuit comprising members 5, 8, 7, 9 and 17, the winding 28 (if present) assisting in the initiation of the generator action. When thyristor 9 is turned off by the regulator 22, power is returned to the source 3 through the circuits 17, 5, 19, 8, 27 and 17, 5, 19, 8, 7, 15. Thus the motor acts as an unstable series generator when thyristor 9 is conductive, the current being limited by operation of sensor 8 to cause regulator 22 to limit the operating frequency and/or mark-space ratio of the chopper circuit. Such limitation also occurs if required during driving of the motor. Switches (not shown) may reverse the armature connections to reverse the motor direction. In a modification, Fig. 2 (not shown), the motor has a shunt field winding (23) controlled by a sensor (25) and chopper regulator (24), members 7, 27, 28 are omitted and a choke (26) functions to limit the rate of rise of pulses of current through the armature. A further diode may be added to shunt members 4, 5 and pass armature circulating current during off periods of the thyristor when driving the motor.
GB721074A 1973-09-10 1974-02-18 Expired GB1460741A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB721074A GB1460741A (en) 1973-09-10 1974-02-18
NL7411555A NL165345C (en) 1973-09-10 1974-08-30 CONTROL CHAIN FOR A DC MACHINE.
AU72983/74A AU495467B2 (en) 1973-09-10 1974-09-04 Control circuits for regeneratively braked pulse-fed motors
DE19742442244 DE2442244A1 (en) 1973-09-10 1974-09-04 ELECTRIC CONTROL CIRCUIT
FR7430499A FR2243547A1 (en) 1973-09-10 1974-09-09
CH1225774A CH587587A5 (en) 1973-09-10 1974-09-09
CA209,018A CA1011391A (en) 1973-09-10 1974-09-10 Control circuits for regeneratively braked pulse-fed motors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4243273 1973-09-10
GB721074A GB1460741A (en) 1973-09-10 1974-02-18

Publications (1)

Publication Number Publication Date
GB1460741A true GB1460741A (en) 1977-01-06

Family

ID=26241268

Family Applications (1)

Application Number Title Priority Date Filing Date
GB721074A Expired GB1460741A (en) 1973-09-10 1974-02-18

Country Status (6)

Country Link
CA (1) CA1011391A (en)
CH (1) CH587587A5 (en)
DE (1) DE2442244A1 (en)
FR (1) FR2243547A1 (en)
GB (1) GB1460741A (en)
NL (1) NL165345C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405886A (en) 1981-02-25 1983-09-20 Williamson Dennis F Braking control
USRE32543E (en) * 1981-02-25 1987-11-10 Urban Transportation Development Corp., Ltd. Braking control
GB2201309A (en) * 1987-02-20 1988-08-24 Cableform Ltd Regenerative braking systems
EP2770629A3 (en) * 2013-02-26 2017-11-22 Nidec SR Drives Ltd. Control of a Brushless Electrical Machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1067377B (en) * 1976-07-30 1985-03-16 Magneti Marelli Spa DEVICE FOR THE RECOVERY OF THE BRAKING ENERGY OF A DIRECT CURRENT MOTOR WITH INDEPENDENT EXCITATION FOR ELECTRIC TRACTION
FR2445060A1 (en) * 1978-12-22 1980-07-18 Alsthom Atlantique ELECTRONIC POWER SUPPLY DEVICE FOR DRIVING DIRECT CURRENT MOTOR FOR QUICK TRACTION-BRAKING AND BRAKING-TRACTION TRANSITION
IT1243810B (en) * 1990-10-08 1994-06-28 Gaetano Monaco DIRECT CURRENT MOTOR WITH INDEPENDENT EXCITATION, POWERED BY ALTERNATING CURRENT THROUGH A HIGH PERFORMANCE ELECTRONIC RECTIFIER CIRCUIT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4405886A (en) 1981-02-25 1983-09-20 Williamson Dennis F Braking control
USRE32543E (en) * 1981-02-25 1987-11-10 Urban Transportation Development Corp., Ltd. Braking control
GB2201309A (en) * 1987-02-20 1988-08-24 Cableform Ltd Regenerative braking systems
EP2770629A3 (en) * 2013-02-26 2017-11-22 Nidec SR Drives Ltd. Control of a Brushless Electrical Machine

Also Published As

Publication number Publication date
NL165345B (en) 1980-10-15
NL165345C (en) 1981-03-16
DE2442244A1 (en) 1975-03-13
NL7411555A (en) 1975-03-12
CH587587A5 (en) 1977-05-13
FR2243547A1 (en) 1975-04-04
CA1011391A (en) 1977-05-31
AU7298374A (en) 1976-03-11

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Legal Events

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