GB1339352A - Safety device for an electric motor reversing switch - Google Patents

Safety device for an electric motor reversing switch

Info

Publication number
GB1339352A
GB1339352A GB2677471*A GB2677471A GB1339352A GB 1339352 A GB1339352 A GB 1339352A GB 2677471 A GB2677471 A GB 2677471A GB 1339352 A GB1339352 A GB 1339352A
Authority
GB
United Kingdom
Prior art keywords
thyristor
control
switching device
flywheel
reversing switch
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
GB2677471*A
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.)
Holzer Patent AG
Original Assignee
Holzer Patent AG
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 Holzer Patent AG filed Critical Holzer Patent AG
Publication of GB1339352A publication Critical patent/GB1339352A/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
    • H02P7/285—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
    • H02P7/295—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 of the kind having one thyristor or the like in series with the power supply and the motor
    • 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
    • H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1339352 Control of DC motors HOLZER PATENT AG 19 April 1971 [16 April 1970] 26774/71 Heading H2J An electric switching device is connected in parallel with a permanent magnet reversible motor whose speed is controlled by a semiconductor switching device, the electronic switching device being arranged to conduct on each occasion when the semi-conductor switching device is conductive The motor 1 is fed from an A.C. line 9 and its speed is controlled by a control thyristor 2 and its rotational direction by a reversing switch 4 operated by an automatic cycling control. A flywheel thyristor 6 is actuated by a trigger device 5 which also actuates the control thyristor 2, so that the flywheel thyristor 6 is conductive only when the control thyristor 2 is conducting. In another embodiment (Fig. 4, not shown), the output from the control thyristor 2 operates a trigger device (8) which controls the flywheel thyristor 6.
GB2677471*A 1970-04-16 1971-04-19 Safety device for an electric motor reversing switch Expired GB1339352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH566470A CH511533A (en) 1970-04-16 1970-04-16 Circuit arrangement with a reversing switch for reversing the direction of rotation of a speed-controlled permanent magnet motor

Publications (1)

Publication Number Publication Date
GB1339352A true GB1339352A (en) 1973-12-05

Family

ID=4297359

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2677471*A Expired GB1339352A (en) 1970-04-16 1971-04-19 Safety device for an electric motor reversing switch

Country Status (3)

Country Link
CH (1) CH511533A (en)
FR (1) FR2086114B1 (en)
GB (1) GB1339352A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9614466B2 (en) 2014-05-20 2017-04-04 Black & Decker Inc. Electronic braking for a universal motor in a power tool
US11047528B2 (en) 2016-02-12 2021-06-29 Black & Decker Inc. Electronic braking for a power tool having a brushless motor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1563240A1 (en) * 1962-11-05 1970-03-19 Licentia Gmbh Arrangement for the supply of preferably direct current consumers of greater power from alternating current sources using tactile converter valves
FR1470229A (en) * 1965-02-27 1967-02-17 Licentia Gmbh Protection system for the excitation windings of synchronous generators in the event of a short circuit
FR1514787A (en) * 1966-03-18 1968-02-23 Ass Elect Ind Improvements to switching systems on inductive loads

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9614466B2 (en) 2014-05-20 2017-04-04 Black & Decker Inc. Electronic braking for a universal motor in a power tool
US11047528B2 (en) 2016-02-12 2021-06-29 Black & Decker Inc. Electronic braking for a power tool having a brushless motor

Also Published As

Publication number Publication date
DE2049179A1 (en) 1971-10-28
CH511533A (en) 1971-08-15
FR2086114B1 (en) 1974-03-08
FR2086114A1 (en) 1971-12-31
DE2049179B2 (en) 1976-02-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee