DE102006060641A1 - Electric circuit has electronic switching on or off device and electromagnetic actuator, which is regulated by mechanical connection, particularly for operating clutch, brake and clutch-brake combination - Google Patents
Electric circuit has electronic switching on or off device and electromagnetic actuator, which is regulated by mechanical connection, particularly for operating clutch, brake and clutch-brake combination Download PDFInfo
- Publication number
- DE102006060641A1 DE102006060641A1 DE200610060641 DE102006060641A DE102006060641A1 DE 102006060641 A1 DE102006060641 A1 DE 102006060641A1 DE 200610060641 DE200610060641 DE 200610060641 DE 102006060641 A DE102006060641 A DE 102006060641A DE 102006060641 A1 DE102006060641 A1 DE 102006060641A1
- Authority
- DE
- Germany
- Prior art keywords
- clutch
- brake
- electromagnetic actuator
- mosfet
- electrical circuit
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/30—Modifications for providing a predetermined threshold before switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
- H03K17/795—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling bipolar transistors
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen elektrischen Stromkreis mit elektronischer Ein-Aus Schalteinrichtung für einen elektromagnetischen Aktuator.The The present invention relates to an electrical circuit with electronic on-off switching device for an electromagnetic Actuator.
Stromkreise
mit elektromechanischer Ein-Aus Schaltvorrichtung in Form von Relais
bzw. Schützen
werden u. a. zum Betätigen
von Kupplungen, Bremsen oder Kupplungs-Brems-Kombinationen verwendet (s. z. B.
Insoweit werden die elektromagnetischen Aktuatoren, zumeist ausgeführt als elektrisch beaufschlagte Spulen, über geeignete Relais- bzw. Schätzschaltungen ein- bzw. ausgeschaltet.in this respect are the electromagnetic actuators, mostly executed as electrically energized coils, via suitable relay or estimator circuits switched on or off.
Das Problem derartiger Schaltungen ist die unvermeidliche Funkenstrecke, die an den Kontakten entsteht und ggf. deren Lebensdauer beschränkt, weil die in der elektromagnetischen Spule gespeicherte Energie das Bestreben hat, mit dem Ausschalten des Stromflusses abzufliessen, so dass es zu unerwünschten Entladevorgängen zwischen den Relaiskontakten kommt.The Problem of such circuits is the inevitable spark gap, which arises at the contacts and possibly limits their life, because the energy stored in the electromagnetic coil endeavors has, with the turning off of the current flow to drain, so that it too unwanted unloading comes between the relay contacts.
Für bestimmte Anwendungsfälle werden jedoch sehr kurze Ein- und Ausschaltzeiten benötigt, so dass hier das Problem entsteht, bereits aufgrund der verkürzten Schaltzeiten mit der entstehenden Funkenbildung fertig zu werden.For certain use cases however, very short on and off times are needed, so that the problem arises here, already because of the shortened switching times to cope with the resulting sparking.
Es ist daher Aufgabe der vorliegenden Erfindung, eine insbesondere zur Verwendung bei schnellen Schaltvorgängen geeignete elektronische Ein-Aus Schaltvorrichtung zu finden, welche einen Kontaktverschleiß während des Ausschaltvorgangs zuverlässig vermeidet.It is therefore an object of the present invention, in particular electronic on-off suitable for use in fast switching operations Switching device to find that a contact wear during the Turn-off reliable avoids.
Diese Aufgabe löst die Erfindung mit den Merkmalen des Hauptanspruchs.These Task solves the invention with the features of the main claim.
Von wesentlicher Bedeutung ist die Einbindung des MOSFET in die mit der Induktivität verbundene Leitung zu GND.From essential is the integration of the MOSFET in the with the inductance connected line to GND.
Diese Maßnahme ist allerdings nur in Kombination mit der parallel zum MOSFET geschalteten Suppressor-Diode zu sehen.These measure However, this is only possible in combination with the suppressor diode connected in parallel with the MOSFET to see.
Dabei macht sich Erfindung die Erkenntnis zu nutze, dass die Suppressor-Diode mit Erreichen ihrer Durchlassspannung sehr schnell durchlässig wird, so dass der MOSFET gegen Durchschlag geschützt ist.there Invention makes use of the knowledge that the suppressor diode becomes very permeable when reaching its forward voltage, so that the MOSFET is protected against breakdown.
Aus diesen Gründen fließt die in der Induktivität enthaltene Energie als Strom hauptsächlich über die Suppressor-Diode und nicht über den MOSFET nach GND ab.Out these reasons flows in the inductance contained energy as a current mainly via the suppressor diode and not over the MOSFET to GND.
Der MOSFET bleibt daher geschützt.Of the MOSFET therefore remains protected.
Dabei sollte die Durchlassspannung der Suppressor-Diode deutlich geringer als die maximal zulässige Spannung des MOSFET sein.there The forward voltage of the suppressor diode should be significantly lower as the maximum allowable Be voltage of the MOSFET.
Vorgeschlagen wird die Auswahl einer Suppressor-Diode, deren Durchlassspannung bis zu ca. 30% unterhalb der maximal zulässigen Spannung des MOSFET liegt.proposed will select a suppressor diode whose forward voltage up to approx. 30% below the maximum permissible voltage of the MOSFET lies.
Über eine derartige Schaltung lassen sich auch für die energiegeladenen Induktivitäten zur Betätigung von Kupplun gen/Bremsen/Kupplungs-Brems-Kombinationen Abschaltzeiten von weniger als 20 Millisekunden realisieren, so dass die elektromagnetischen Aktuatoren problemlos 40 Schaltungen pro Minute oder mehr ausführen können.Over a Such a circuit can also be used for the high-energy inductances activity Clutches / Brakes / Clutch / Brake combinations Shutdown times of less than 20 milliseconds, so that the electromagnetic Actuators can easily run 40 circuits per minute or more.
Eine weitere Maßnahme, den MOSFET vor Durchschlag zu schützen, besteht darin, parallel zum elektromagnetischen Aktuator einen Varistor zu schalten.A further consequences, Protecting the MOSFET from breakdown is in parallel to switch a varistor to the electromagnetic actuator.
Bekannterweise steigt dessen Widerstand mit steigender Spannung, so dass der parallel zur Induktivität angeschlossene Varistor bei Spannungsanstieg einen niederohmigen Nebenschluss bildet und so einen weiteren Anstieg der Überspannung verhindert.known manner its resistance increases with increasing voltage, so that the parallel to the inductance connected varistor with voltage increase a low impedance Shunt forms and so a further increase in overvoltage prevented.
Es kommt daher zu einem zusätzlichen Schutz des MOSFET, wobei auch hier vorgeschlagen wird, parallel zum Varistor eine weitere Suppressor-Diode zu schalten, die bei Überspannung für eine schnelle Ableitung des Stroms nach GND sorgt.It comes therefore to an additional protection of the MOSFET, which is also proposed here, parallel to the varistor to turn on another suppressor diode, which in case of overvoltage for a quick Derivation of the current to GND ensures.
Im Folgenden wir die Erfindung anhand eines Ausführungbeispiels näher erläutert.in the Below, we will explain the invention with reference to an exemplary embodiment.
Es zeigt:It shows:
Der
elektromagnetische Aktuator
Für weitere
Details wird auf den Stand der Technik verwiesen (s. z. B.
Die
Induktivität
des elektromagnetischen Aktuators
Es
geht darum, die Kupplung/Bremse/Kupplungs-Brems-Kombination innerhalb möglichst
kurzer Zeiten über
den elektromagnetischen Aktuator
Zu
diesem Zweck ist in den Stromkreis des elektromagnetischen Aktuators
Der
MOSFET
Damit
in diesem System die in der Spule gespeicherte Energie nicht zu
einem Durchschlag des MOSFET
Man
macht sich insoweit die Eigenschaft der Suppressor-Diode
Dabei sollte die Durchlassspannung der Suppressor-Diode deutlich geringer als die maximal zulässige Spannung des MOSFET sein.there The forward voltage of the suppressor diode should be significantly lower as the maximum allowable Be voltage of the MOSFET.
Vorgeschlagen wird, Suppressor-Diode auszuwählen, deren Durchlassspannung bis zu ca. 30% unter dem maximal zuläsigen Spannungswert des MOSFET liegt.proposed will select suppressor diode their forward voltage up to approximately 30% below the maximum permissible voltage value the MOSFET is located.
Auf diese Weise kann der MOSFET derart ausgelegt werden, dass eine Schaltzeit von weniger als 20 Millisekunden bei etwa 30 Schaltungen pro Minute, vorzugsweise sogar bei mehr als 40 Schaltungen pro Minute, erreicht werden kann.On In this way, the MOSFET can be designed such that a switching time less than 20 milliseconds at about 30 cycles per minute, preferably even at more than 40 cycles per minute can be.
Ergänzend hierzu
liegt parallel zum elektromagnetischen Akutator ein Varistor
Da Varistoren spannungsabhängige Widerstände sind, deren Widerstandswert mit steigender Spannung an der Spule abnimmt, bilden sie bei einem Ausschaltvorgang einen Nebenschluss und schützen daher den MOSFET.There Varistors voltage dependent resistors whose resistance value increases with increasing voltage across the coil decreases, they form a shunt during a turn-off and protect therefore the mosfet.
Zusätzlich ist
parallel zum Varistor
Diese
weitere Suppressordiode
Die
in der Spule des elektromagnetischen Aktuators
- 11
- Kupplung, Bremse, Kupplungs-Brems-KombinationClutch, Brake, clutch-brake combination
- 22
- elektromagnetischer Aktuatorelectromagnetic actuator
- 33
- Stromanschlusspower connection
- 44
- GRDGRD
- 55
- MOSFETMOSFET
- 66
- Suppressor-DiodeSuppressor diode
- 77
- Varistorvaristor
- 88th
- weitere Suppressor-DiodeFurther Suppressor diode
- 1010
- elektronische Ein-Aus Schalteinrichtungelectronic On-off switching device
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610060641 DE102006060641A1 (en) | 2006-12-21 | 2006-12-21 | Electric circuit has electronic switching on or off device and electromagnetic actuator, which is regulated by mechanical connection, particularly for operating clutch, brake and clutch-brake combination |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610060641 DE102006060641A1 (en) | 2006-12-21 | 2006-12-21 | Electric circuit has electronic switching on or off device and electromagnetic actuator, which is regulated by mechanical connection, particularly for operating clutch, brake and clutch-brake combination |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006060641A1 true DE102006060641A1 (en) | 2008-06-26 |
Family
ID=39431551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610060641 Withdrawn DE102006060641A1 (en) | 2006-12-21 | 2006-12-21 | Electric circuit has electronic switching on or off device and electromagnetic actuator, which is regulated by mechanical connection, particularly for operating clutch, brake and clutch-brake combination |
Country Status (1)
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DE (1) | DE102006060641A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009011275A1 (en) * | 2008-03-19 | 2009-09-24 | Smc Kabushiki Kaisha | A solenoid valve drive control apparatus and method for driving a solenoid valve |
EP2503682A1 (en) * | 2011-03-22 | 2012-09-26 | Siemens Aktiengesellschaft | Switching assembly |
DE102015119220A1 (en) * | 2015-11-09 | 2017-05-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Protection circuit for a circuit breaker |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3908055C1 (en) * | 1989-03-13 | 1990-09-13 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | |
US5267120A (en) * | 1987-05-04 | 1993-11-30 | Digital Appliance Controls, Inc. | Relay control apparatus |
US5392188A (en) * | 1991-02-15 | 1995-02-21 | Epstein; Barry M. | Power surge transient voltage protection and filtering circuit having current controlling characteristics |
DE4344126A1 (en) * | 1993-12-23 | 1995-07-06 | Licentia Gmbh | Electronic contactor quick shutdown |
DE19933201A1 (en) * | 1999-07-15 | 2001-01-18 | Moeller Gmbh | Emergency shut down protective switch circuit has voltage divider connected to control electrode of transistor |
-
2006
- 2006-12-21 DE DE200610060641 patent/DE102006060641A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5267120A (en) * | 1987-05-04 | 1993-11-30 | Digital Appliance Controls, Inc. | Relay control apparatus |
DE3908055C1 (en) * | 1989-03-13 | 1990-09-13 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | |
US5392188A (en) * | 1991-02-15 | 1995-02-21 | Epstein; Barry M. | Power surge transient voltage protection and filtering circuit having current controlling characteristics |
DE4344126A1 (en) * | 1993-12-23 | 1995-07-06 | Licentia Gmbh | Electronic contactor quick shutdown |
DE19933201A1 (en) * | 1999-07-15 | 2001-01-18 | Moeller Gmbh | Emergency shut down protective switch circuit has voltage divider connected to control electrode of transistor |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009011275A1 (en) * | 2008-03-19 | 2009-09-24 | Smc Kabushiki Kaisha | A solenoid valve drive control apparatus and method for driving a solenoid valve |
EP2503682A1 (en) * | 2011-03-22 | 2012-09-26 | Siemens Aktiengesellschaft | Switching assembly |
US8890466B2 (en) | 2011-03-22 | 2014-11-18 | Siemens Aktiengesellschaft | Circuit arrangement |
DE102015119220A1 (en) * | 2015-11-09 | 2017-05-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Protection circuit for a circuit breaker |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20131224 |