DE2002462A1 - Electrical braking in the event of a power failure, especially of thyristor-fed drive motors - Google Patents

Electrical braking in the event of a power failure, especially of thyristor-fed drive motors

Info

Publication number
DE2002462A1
DE2002462A1 DE19702002462 DE2002462A DE2002462A1 DE 2002462 A1 DE2002462 A1 DE 2002462A1 DE 19702002462 DE19702002462 DE 19702002462 DE 2002462 A DE2002462 A DE 2002462A DE 2002462 A1 DE2002462 A1 DE 2002462A1
Authority
DE
Germany
Prior art keywords
event
power failure
thyristor
braking
drive 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.)
Pending
Application number
DE19702002462
Other languages
German (de)
Inventor
Hans-Juergen Dipl-In Sauermann
Volker Schuchardt
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.)
Starkstrom Anlagenbau VEB
Original Assignee
Starkstrom Anlagenbau VEB
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 Starkstrom Anlagenbau VEB filed Critical Starkstrom Anlagenbau VEB
Publication of DE2002462A1 publication Critical patent/DE2002462A1/en
Pending 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
    • H02P3/12—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 short-circuit or resistive braking

Landscapes

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

Description

Elektrische Bremsung bei Netzausfall, insbesondere von thyristorgespeisten Antriebsmotoren Dje Erfindung betrifft eine elektrische Bremsung bei Netzausfall, insbesondere von thyrsitorgespeisten Antriebsmotoren, vorzugsweise bei Aufzeigen. Electrical braking in the event of a power failure, especially of thyristor-powered ones Drive motors Dje invention relates to electrical braking in the event of a power failure, in particular of thyrsitor-fed drive motors, preferably in the case of demonstrations.

Bekannt ist, daß für Gleiohstromantriebe Maschinenumformer benutzt werden. Seit neuerer Zeit werden Maschinanumformer durch Stromrichter ersetzt. Die Bremsung desAntriebamotors in thyristorgespeisten Anlagen geschieht bei Netzausfall durch mechanische Bremsen. Weiterhin kann auch eine elektrische Widerstandsbremsung durchgeftilirt werden. Hierbei wird eine Pufferbatterie auf die Peldwicklung des Antriebsmotors geschalten.It is known that machine converters are used for sliding current drives will. Machine converters have recently been replaced by power converters. the Braking of the drive motor in thyristor-fed systems occurs in the event of a power failure by mechanical brakes. Electrical resistance braking can also be used be filtered through. A buffer battery is used on the field winding of the Drive motor switched.

Die angeführten Möglichkeiten der Bremsung bei Netzausfall haben folgende Nachteile.The listed options for braking in the event of a power failure are as follows Disadvantage.

Wird die Bremsung des Antriebsmotors durch eine rein mechani che Bremse durchgeführt, so muß sie £r sehr große Bremskräfte ausgelegt und bremsdruckgeregelt sein. Diese Bremse unterliegt einem sehr hohen Verschleiß und muß daher ständig gewartet werden. Bei der elektrischen Widerstandsbremsung mittels lpeldspeisung des Antriebsmotors durch Pufferbatterien wird ein gesondert er Batterieraum benötigt, welcher vom ökonomischen Standpunkt kostspielig ist. U1n eine geforderte Betriebssicherheit der Anlage zu gewährleisten, müssen die Batterien ständig gewartet und gepflegt werden.The braking of the drive motor is done by a purely mechanical brake carried out, it must be designed for very large braking forces and brake pressure controlled be. This brake is subject to a very high level of wear and tear and must therefore constantly being repaired. With electrical resistance braking by means of oil supply the drive motor through buffer batteries, a separate battery room is required, which is costly from an economic standpoint. U1n a required operational safety To guarantee the system, the batteries must be constantly maintained and cared for will.

Zweck der Erfindung ist es, die aufgezeigten Mängel bzw.The purpose of the invention is to remedy the deficiencies or

Nachteile der bekannten Verfahren zum Bremsen von thyristorgespeisten Anlagen zu beseitigen.Disadvantages of the known method for braking thyristor-fed Eliminate attachments.

Der Erfindung liegt die Aufgabe zugrunde, ein Bremsverfahren, insbesondere fUr thyristorgespeiste Antriebsmotoren, so zu entwickeln, daß ein sicheres Abbremsen der Antriebsmotoren ohne kostspieligen Aufwand erfolgen kann.The invention is based on the object of a braking method, in particular for thyristor-fed drive motors, to be developed in such a way that safe braking the drive motors can be done without costly effort.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, indem man parallel der Peldwicklung des Antriebsmotors eine vorzugsweise selbsterregte Gleichstrommaschine mit großer mechanischer Zeitkonstante schaltet, die wahrend des normalen Betriebes die funktion der Fremdbeluftung flfr den Antriebsmotor ausübt. Bei Netzausfall wird die Gleichstrommaschine auf Grund ihrer großen mechanischen Zeitkonstante zum Generator und speist damit die Feldwicklung des Antriebsmotors. Wie bekannt, wird der Antriebsmotor dann Uber die Bremswiderstände abgebremst.According to the invention, the object is achieved by parallel the field winding of the drive motor is a preferably self-excited DC machine with a large mechanical time constant that switches during normal operation performs the function of external ventilation for the drive motor. In the event of a power failure the DC machine due to its large mechanical time constant to the generator and thus feeds the field winding of the drive motor. As is known, the drive motor is then braked via the braking resistors.

Die Erfindung bewirkt eine Bremsung, welche keinen besonderen Aufwand an zusätzlichen technischen Mitteln erfordert.The invention causes braking that does not require any special effort requires additional technical means.

Die Erfindung soll an nachfolgendem Ausfthrungsbeis'piel näher erläutert werden.The invention is to be explained in more detail using the following exemplary embodiment will.

Ein Gleichstromantriebsmotor 1 wird Uber einen Thristorsatz 2 bei Netzbetrieb gespeist. Dabei dient die Gleichstromnebenschlußmaschine 3 mit einer großen mechanischen Zeitkonstante zur FremdbelU!tung des Antriebsmotors.A DC drive motor 1 is via a thristor set 2 at Mains powered. The DC shunt machine 3 is used with a large mechanical time constant for external ventilation of the drive motor.

Bei Netzausfall wird Uber einen Öffner 4a des NegativschUtzes 4 der Bremswiderstand 5 in den Ankerkreis des Gleiohstromantriebsmotors 1 geschalten. Die Erregerwicklung 6 des Gleichstromantriebsmotors 1 wird dabei durch die im Generatorbetrieb befindliche Gleichstromnebenschlußmaschine 3 gespeist, so daß eine Widerstandsbremsung über einen Zeitraum, je nach Auslegung der Schwungmasse 7 der Gleichstromnebenschlußmaschine 3, ermöglicht wird.In the event of a power failure, the negative contactor 4 of the Braking resistor 5 is connected to the armature circuit of Gleiohstromantriebsmotor 1. The excitation winding 6 of the direct current drive motor 1 is operated by the generator located DC shunt machine 3 fed, so that a resistive braking above a period of time, depending on the design of the flywheel 7 of the DC shunt machine 3, is made possible.

Um eine volle Erregung der Erregerwicklung 6 des Gleichstromantriebsmotors 1 zu gewährleisten, wird der Widerstand 8 durch einen Öffner 4b des Negativschützes 4 kurzgeschlossen, sowie der Anlaßwiderstand 9 der Gleichstromnebenschlußmaschine 3 durch eine Diode 10 dberbrUckt.To a full excitation of the excitation winding 6 of the DC drive motor 1, the resistor 8 is connected to an opener 4b of the negative contactor 4 short-circuited, as well as the starting resistor 9 of the direct current shunt machine 3 bridged by a diode 10.

Claims (2)

P a t e n t a n s p r ü c h e:P a t e n t a n s p r ü c h e: 1. Elekrische Bromsung bei Netzausfall, insbesondere von thyristorgespeisten Antriebsmotoren, dadurch gekennzeichnet, daß bei Netzausfall eine vorzugsweise Gleichstrommbenschlußmaschine (3) rilit großer Zeitkonstante (7) zur Feldwicklung (6) eines Antriebsmotors (1) parallel, und ein Bremwiderstand (5) über einen Öffner (4a) eines Negativschützes (4) mit dem Ankerkreis des Antriebsmotors (1) in Reihe geschalten ist.1. Electrical Bromsung in the event of a power failure, especially from thyristor-fed ones Drive motors, characterized in that, in the event of a power failure, a preferably direct current connection machine (3) rilit a large time constant (7) for the field winding (6) of a drive motor (1) parallel, and a braking resistor (5) via an NC contact (4a) of a negative contactor (4) is connected in series with the armature circuit of the drive motor (1). 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß ein Anlaßwiderstand (9) der Gleichstromnebenschlußmaschine (3) durcll eine Diode (10) überbrückt, und ein Widerstand (8) Uber einen Öffner (4b) des Negativschützes (4) kurzgeschlossen ist. 2. Arrangement according to claim 1, characterized in that a starting resistor (9) the DC shunt machine (3) bridged by a diode (10), and a resistor (8) short-circuited via an opener (4b) of the negative contactor (4) is.
DE19702002462 1969-11-27 1970-01-21 Electrical braking in the event of a power failure, especially of thyristor-fed drive motors Pending DE2002462A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD14395369 1969-11-27

Publications (1)

Publication Number Publication Date
DE2002462A1 true DE2002462A1 (en) 1971-06-03

Family

ID=5481869

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702002462 Pending DE2002462A1 (en) 1969-11-27 1970-01-21 Electrical braking in the event of a power failure, especially of thyristor-fed drive motors

Country Status (4)

Country Link
AT (1) AT302572B (en)
CH (1) CH520438A (en)
DE (1) DE2002462A1 (en)
SE (1) SE357860B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9106410U1 (en) * 1991-05-24 1992-09-24 Dictator Technik Dr. Wolfram Schneider & Co Verwaltungs- und Beteiligungsgesellschaft, 8902 Neusäß Drive for doors, gates or flaps
DE4212473A1 (en) * 1992-04-14 1993-10-21 Helmut Claus Gmbh & Co Kg Fabr LV DC positioning drive, e.g. for window pairs - incorporates gearing to rack=and=pinion transmission arranged with components of mains-powered supply circuit in compact housing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9106410U1 (en) * 1991-05-24 1992-09-24 Dictator Technik Dr. Wolfram Schneider & Co Verwaltungs- und Beteiligungsgesellschaft, 8902 Neusäß Drive for doors, gates or flaps
DE4212473A1 (en) * 1992-04-14 1993-10-21 Helmut Claus Gmbh & Co Kg Fabr LV DC positioning drive, e.g. for window pairs - incorporates gearing to rack=and=pinion transmission arranged with components of mains-powered supply circuit in compact housing

Also Published As

Publication number Publication date
AT302572B (en) 1972-09-15
SE357860B (en) 1973-07-09
CH520438A (en) 1972-03-15

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