GB995852A - Improvements in and relating to alternating current switching arrangements for reversing polyphase motors - Google Patents

Improvements in and relating to alternating current switching arrangements for reversing polyphase motors

Info

Publication number
GB995852A
GB995852A GB39281/61A GB3928161A GB995852A GB 995852 A GB995852 A GB 995852A GB 39281/61 A GB39281/61 A GB 39281/61A GB 3928161 A GB3928161 A GB 3928161A GB 995852 A GB995852 A GB 995852A
Authority
GB
United Kingdom
Prior art keywords
switches
diode
parallel
motors
motor
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
GB39281/61A
Inventor
Floris Koppelmann
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to GB39281/61A priority Critical patent/GB995852A/en
Publication of GB995852A publication Critical patent/GB995852A/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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise

Abstract

995,852. Control of A.C. motors; arcing preventing in switches. LICENTIA PATENTVERWALTUNGS G.m.b.H. Nov. 2, 1961, No. 39281/61. Headings H2B and H2J. In a reversing arrangement for a three-phase induction motor, the phase-sequence of the supply to the stator winding of the motor is reversed by interchanging phases U, V by switches S 1 , S 1 <SP>1</SP>, S 2 , S 2 <SP>1</SP>, connected as shown. Diode devices 7, 8 are connected in parallel with switches S 1 <SP>1</SP>, S 2 1 to suppress sparking. Each device may comprise a plurality of silicon or germanium diodes in series or parallel and may have associated series resistors. The switches are actuated by cams 19-22, 19-22<SP>1</SP>, driven by split-phase motors 9, 10 through gearing 17, 18. The change-over of switches S 1 <SP>1</SP>, S 1 to switches S 2 , S 2 1 is synchronized with the frequency of the current to be switched and is time displaced by an interval corresponding to a half-cycle of the supply frequency so that a switch in parallel is with a diode opened when the diode is conducting and the series switch is opened when the diode is non-conducting. The motor-driven cam-operated switches can be replaced by relay-operated contactors.
GB39281/61A 1961-11-02 1961-11-02 Improvements in and relating to alternating current switching arrangements for reversing polyphase motors Expired GB995852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB39281/61A GB995852A (en) 1961-11-02 1961-11-02 Improvements in and relating to alternating current switching arrangements for reversing polyphase motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB39281/61A GB995852A (en) 1961-11-02 1961-11-02 Improvements in and relating to alternating current switching arrangements for reversing polyphase motors

Publications (1)

Publication Number Publication Date
GB995852A true GB995852A (en) 1965-06-23

Family

ID=10408702

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39281/61A Expired GB995852A (en) 1961-11-02 1961-11-02 Improvements in and relating to alternating current switching arrangements for reversing polyphase motors

Country Status (1)

Country Link
GB (1) GB995852A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338360A (en) * 1998-04-21 1999-12-15 Chamberlain Group The Barrier or door operator, and electric motor control device therefor
CN103281017A (en) * 2013-06-18 2013-09-04 长沙中联消防机械有限公司 Motor rotation direction control device, method and system and engineering vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338360A (en) * 1998-04-21 1999-12-15 Chamberlain Group The Barrier or door operator, and electric motor control device therefor
US6184641B1 (en) 1998-04-21 2001-02-06 The Chamberlain Group, Inc. Controller for a door operator
GB2338360B (en) * 1998-04-21 2002-09-25 Chamberlain Group Inc Controller for a door operator
AU760151B2 (en) * 1998-04-21 2003-05-08 Chamberlain Group, Inc., The Controller for a door operator
CN103281017A (en) * 2013-06-18 2013-09-04 长沙中联消防机械有限公司 Motor rotation direction control device, method and system and engineering vehicle

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