DE2843093A1 - CIRCUIT ARRANGEMENT FOR AN INTRINSICALLY SAFE POWER SUPPLY DEVICE - Google Patents
CIRCUIT ARRANGEMENT FOR AN INTRINSICALLY SAFE POWER SUPPLY DEVICEInfo
- Publication number
- DE2843093A1 DE2843093A1 DE19782843093 DE2843093A DE2843093A1 DE 2843093 A1 DE2843093 A1 DE 2843093A1 DE 19782843093 DE19782843093 DE 19782843093 DE 2843093 A DE2843093 A DE 2843093A DE 2843093 A1 DE2843093 A1 DE 2843093A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit arrangement
- semiconductor component
- current
- power supply
- intrinsically safe
- 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- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/563—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
Description
SIEMENS AKTIENGESELLSCHAFT Unser ZeichenSIEMENS AKTIENGESELLSCHAFT Our mark
Berlin und München VPA 78 P 3787 BFlDBerlin and Munich VPA 78 P 3787 BFlD
Schaltungsanordnung für eine eigensichere Stromversorgungseinrichtung Circuit arrangement for an intrinsically safe power supply device
Eigensichere Stromversorgungseinrichtungen, wie sie beispielsweise in elektrischen Anlagen für den Bergbau unter Tage oder explosionsgeschützten elektrischen Anlagen benötigt werden, müssen nach den geltenden Vorschriften derart aufgebaut sein, daß die von ihnen abgegebene Energie zur Erzeugung zündfähiger Funken nicht ausreicht. Ein europäischer Normentwurf (50020 vom AugustIntrinsically safe power supply devices, such as those for example required in electrical systems for underground mining or explosion-proof electrical systems must be set up according to the applicable regulations in such a way that the issued by them There is not enough energy to generate ignitable sparks. A European draft standard (50020 from August
1976) enthält darüber hinaus eine Klassifizierung eigensicherer Betriebsmittel für unterschiedliche Sicherheit sanf orderungen mit den Bezeichnungen "ia" und nibn. Betriebsmittel der Kategorie "ia" dürfen danach nicht in der Lage sein, im Normalbetrieb bei Auftreten eines einzelnen Fehlers oder beim Auftreten Jeder Kombination von zwei Fehlern eine Zündung zu verursachen mit einem Sicherheitsfaktor von 1,5 im Normalbetrieb mit einem Fehler und mit einem Sicherheitsfaktor von 1,0 mit zwei Fehlern. Eine Strombegrenzung mit Hilfe von Halbleitern ist bei Betriebsmitteln dieser Kategorie nicht zulässig,1976) also contains a classification of intrinsically safe equipment for different safety requirements with the designations "ia" and n ib n . According to this, equipment of category "ia" must not be able to cause an ignition with a safety factor of 1.5 in normal operation with an error and with a safety factor of 1.0 with two errors. A current limitation with the help of semiconductors is not permitted for equipment of this category,
Et 3 Sho / 26.9.1978Et 3 Sho / 9/26/1978
0300U/05390300U / 0539
2843Q932843Q93
VPA 78 P 3787 BRD weil aufgrund des Übergangsverhaltens von Halbleitern eine Zündung nicht auszuschließen ist.VPA 78 P 3787 BRD because due to the transition behavior of semiconductors ignition cannot be ruled out.
Der Erfindung liegt die Aufgabe zugrunde, eine Schaltungsanordnung für eine eigensichere Stromversorgungseinrichtung zu schaffen, die trotz der Verwendung eines Halbleiters zur Strombegrenzung den Anforderungen an die Eigensicherheit entsprechend der Kategorie "ia" genügt.The invention is based on the object of a circuit arrangement for creating an intrinsically safe power supply device that, despite the use of a Semiconductor for current limitation meets the intrinsic safety requirements in accordance with category "ia".
Gemäß der Erfindung wird diese Aufgabe durch ein in den Primärkreis eines Ausgangstransformators eines Schaltreglers eingeschaltetes, in Abhängigkeit von Regelsignalen steuerbares Halbleiterbauelement gelöst. Die geforderte Sicherheit ergibt sich dadurch, daß sowohl bei einer kurzschließenden als auch bei einer unterbrechenden Zerstörung des Halbleiterbauelementes eine Energieübertragung aus dem mit Gleichstrom gespeisten Primärkreis des Transformators in dessen Sekundärkreis unterbleibt. According to the invention, this object is achieved by an in the primary circuit of an output transformer of a switching regulator switched on, controllable as a function of control signals semiconductor component solved. The required Safety results from the fact that both a short-circuiting and an interrupting one Destruction of the semiconductor component an energy transfer from the primary circuit fed with direct current of the transformer in its secondary circuit is omitted.
Eine zusätzliche Sicherheit im Sinne der erwähnten Schutzkategorie kann durch dem Halbleiterbauelement zuzuführende Regelsignale erreicht werden, die von Strom- und Spannungswerten des Sekundärkreises des Schaltreglers abgeleitet werden.Additional security in the sense of the protection category mentioned can be provided by the semiconductor component Control signals are achieved by the current and voltage values of the secondary circuit of the switching regulator be derived.
Dem Schaltregler kann ein Längsregler nachgeschaltet sein, und die verbraucherseitigen Klemmen der Schaltungsanordnung können durch ein weiteres Halbleiterbauelement in Abhängigkeit von Grenzwerten des Stromes und der Spannung kurzschließbar sein. Auf diese Veise bietet die Schaltungsanordnung eine mehrfach redundante Sicherheit.A series regulator can be connected downstream of the switching regulator be, and the consumer-side terminals of the circuit arrangement can be through a further semiconductor component be short-circuited depending on the limit values of the current and the voltage. In this way offers the circuit arrangement a multiple redundant security.
Ferner kann in den Primärkreis des Transformators eine Schmelzsicherung eingeschaltet sein, die bei unzulässi-Furthermore, a fuse can be switched on in the primary circuit of the transformer, which in the event of impermissible
030014/0539030014/0539
- /- VPA 78 P 3787 BRD- / - VPA 78 P 3787 FRG
gen Stromwerten eine Abschaltung der Schaltungsanordnung bewirkt.A shutdown of the circuit arrangement caused by current values.
Die Erfindung wird im folgenden anhand eines in der Figur dargestellten Ausführungsbeispieles näher erläutert. The invention is described below with reference to one in Figure illustrated embodiment explained in more detail.
Die in der Figur dargestellte Schaltungsanordnung geht von einem Gleichrichter 1 aus, dessen Ausgangsspannung durch einen Kondensator 2 geglättet wird. Der Stromkreis schließt sich über eine Schmelzsicherung 3, die Primärwicklung 4 eines Transformators 5 und ein steuerbares Halbleiterbauelement 6, z. B. einen Triac oder einen Schalttransistor. Diese Teile bilden einen Schaltregler. Die Sekundärwicklung 7 des Transformators 5 speist die an die Ausgangsklemmen 10 und 11 anzuschließenden Verbraucher nach Gleichrichtung durch eine Diode 12 und Glättung durch einen Kondensator 13 über einen Längsregler 14. Dem steuerbaren Halbleiterbauelement 6 sind Regelsignale in Abhängigkeit von Strom- und Spannungswerten im Sekundärkreis des Transformators 5 über geeignete Koppelglieder 15 und 16, z. B. Optokoppler, zuführbar. Dies geschieht einerseits über einen Signalverstärker 17, der die an dem Glättungskondensator 13 auftretende Spannung in ein Regelsignal umformt, das dem steuerbaren Halbleiterbauelement 6 über das Koppelglied 15 zugeführt wird. Andererseits wird bezüglich des Stromes durch einen weiteren Signalverstärker 20 ein Ausgangssignal zu dem Halbleiterbauelement 6 über das Koppelglied 16 geleitet und mittels eines Signalverstärkers 27 ein Ausgangssignal über das Koppelglied 15. Zwei weitere Signalverstärker 21 für Spannungswerte und 22 für Stromwerte beeinflussen den Längsregler 14. Außerdem beeinflußt der schon erwähnte Signalverstärker 22 in Abhängigkeit vom Strom die Bezugsspannung des SignalVerstärkers 17, so daß bei einem überstrom dieThe circuit arrangement shown in the figure is based on a rectifier 1, the output voltage of which is smoothed by a capacitor 2. The circuit closes via a fuse 3, the Primary winding 4 of a transformer 5 and a controllable semiconductor component 6, e.g. B. a triac or a switching transistor. These parts form a switching regulator. The secondary winding 7 of the transformer 5 feeds the consumers to be connected to the output terminals 10 and 11 after rectification by a diode 12 and smoothing by a capacitor 13 via a series regulator 14. The controllable semiconductor component 6 are control signals depending on current and voltage values in the secondary circuit of the transformer 5 via suitable coupling members 15 and 16, e.g. B. optocoupler, can be supplied. This is done on the one hand via a signal amplifier 17, which converts the voltage appearing at the smoothing capacitor 13 into a control signal that the controllable semiconductor component 6 is supplied via the coupling element 15. On the other hand, regarding of the current through a further signal amplifier 20 transmits an output signal to the semiconductor component 6 the coupling member 16 and by means of a signal amplifier 27 an output signal via the coupling member 15. Two further signal amplifiers 21 for voltage values and 22 for current values influence the series regulator 14. In addition, the already mentioned signal amplifier has an influence 22, depending on the current, the reference voltage of the signal amplifier 17, so that in the event of an overcurrent the
030014/0539030014/0539
- / - VPA 78 P 3787 BRD - / - VPA 78 P 3787 FRG
Spannung am Glättungskondensator 13 über das Halbleiter bauelement 6 reduziert wird.Voltage on the smoothing capacitor 13 via the semiconductor component 6 is reduced.
Parallel zu den Ausgangsklemmen 10 und 11 liegt ein wei teres steuerbares Halbleiterbauelement 23, dessen Steuerelektrode 24 bei unzulässigen Spannungswerten durch die Schwellwertdioden 25 und 26 und bei unzulässigen Stromwerten durch die Signalverstärker 20 und 27 mit einer Zündspannung beaufschlagbar ist.In parallel with the output terminals 10 and 11 is a further controllable semiconductor component 23, its control electrode 24 in the case of impermissible voltage values through the threshold value diodes 25 and 26 and in the case of impermissible ones An ignition voltage can be applied to current values through the signal amplifiers 20 and 27.
In dem Schaltbild ist eine Anzahl nicht bezeichneter Dioden enthalten, die nur die Aufgabe haben, die Ausgänge der Signalverstärker in bekannter Weise voneinander zu entkoppeln.The circuit diagram contains a number of unmarked diodes which only have the task of providing the outputs to decouple the signal amplifier from one another in a known manner.
Die beschriebene Schaltungsanordnung weist eine mehrfache Sicherung bei der Einhaltung der Bedingungen für die Eigensicherheit auf. Bereits das in Reihe mit der Primärwicklung 4 des Transformators 5 geschaltete HaIbleiterbauelement ist in Abhängigkeit von Strom- und Spannungswerten steuerbar und ist derart geschaltet, daß seine Zerstörung die Eigensicherheit nicht beeinträchtigen kann. Eine weitere Sicherheit für die Einhaltung der zulässigen Werte für Strom und Spannung bewirkt zusätzlich das steuerbare Halbleiterbauelement 23 zwischen den Ausgangsklemmen 10 und 11. Ferner kann die Schaltungsanordnung beim Ansprechen der Schmelzsicherung 3. außer Betrieb gesetzt werden, wenn aus irgendwelchen Gründen im Primärkreis des Transformators 5 der Strom unzulässig ansteigt. Außerdem ist der als Sperrwandler betriebene Schaltregler nicht in der Lage, eine unzulässige Energie in den Sekundärkreis zu induzieren. The circuit arrangement described has a multiple fuse in compliance with the conditions for intrinsic safety. Already the semiconductor component connected in series with the primary winding 4 of the transformer 5 can be controlled as a function of current and voltage values and is switched in such a way that that its destruction cannot impair intrinsic safety. Another security for compliance the permissible values for current and voltage are also caused by the controllable semiconductor component 23 between the output terminals 10 and 11. Furthermore, the circuit arrangement when the fuse 3. Be taken out of service if for any reason in the primary circuit of the transformer 5 the current increases in an impermissible manner. In addition, the switching regulator operated as a flyback converter is not able to to induce an impermissible energy in the secondary circuit.
4 Ansprüche
1 Figur4 claims
1 figure
0 300U/05390 300U / 0539
Claims (4)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782843093 DE2843093A1 (en) | 1978-09-29 | 1978-09-29 | CIRCUIT ARRANGEMENT FOR AN INTRINSICALLY SAFE POWER SUPPLY DEVICE |
| JP12308579A JPS5547517A (en) | 1978-09-29 | 1979-09-25 | Intrinsically safe* explosion proof power supply unit |
| GB7933255A GB2031623A (en) | 1978-09-29 | 1979-09-26 | Power supplies |
| BE0/197325A BE879011A (en) | 1978-09-29 | 1979-09-26 | CIRCUIT SYSTEM FOR AN INTRINSICALLY SAFE POWER SUPPLY DEVICE |
| FR7924132A FR2437721A1 (en) | 1978-09-29 | 1979-09-27 | COUPLING DEVICE FOR AN INTRINSICALLY SECURITY POWER SUPPLY SYSTEM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782843093 DE2843093A1 (en) | 1978-09-29 | 1978-09-29 | CIRCUIT ARRANGEMENT FOR AN INTRINSICALLY SAFE POWER SUPPLY DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2843093A1 true DE2843093A1 (en) | 1980-04-03 |
Family
ID=6051270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782843093 Withdrawn DE2843093A1 (en) | 1978-09-29 | 1978-09-29 | CIRCUIT ARRANGEMENT FOR AN INTRINSICALLY SAFE POWER SUPPLY DEVICE |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5547517A (en) |
| BE (1) | BE879011A (en) |
| DE (1) | DE2843093A1 (en) |
| FR (1) | FR2437721A1 (en) |
| GB (1) | GB2031623A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2937298A1 (en) * | 1979-09-12 | 1981-04-02 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Power pack for mining equipment with built-in protection - has low ripple and includes output limiting inductance and clamping diodes controlling FET |
| DE3150398A1 (en) * | 1981-12-16 | 1983-06-23 | Siemens AG, 1000 Berlin und 8000 München | INTRINSICALLY SAFE POWER SUPPLY DEVICE WITH A CONTROLLABLE SEMICONDUCTOR SITUATED IN THE PRIMARY CIRCUIT OF A TRANSFORMER |
| DE3322278A1 (en) * | 1983-06-16 | 1984-12-20 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for regulating the output voltage of a power supply apparatus |
| DE4121634A1 (en) * | 1990-08-09 | 1992-02-13 | Promos Electronic Gmbh | POWER SUPPLY FOR INTRINSICALLY SAFE CIRCUITS |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5530275A (en) * | 1978-08-25 | 1980-03-04 | Matsushita Electric Ind Co Ltd | Speaker |
| GB2131209B (en) * | 1982-11-02 | 1986-01-15 | Newton Derby Ltd | Switch mode power supply |
| FR2585897A1 (en) * | 1985-08-02 | 1987-02-06 | Loire Electronique | SAFETY CIRCUITS FOR CUT-OUT POWER SUPPLY |
| GB2265028B (en) * | 1992-03-09 | 1996-05-01 | Desmond Wheable | A novel method of generating constant alternating voltage or current supply |
-
1978
- 1978-09-29 DE DE19782843093 patent/DE2843093A1/en not_active Withdrawn
-
1979
- 1979-09-25 JP JP12308579A patent/JPS5547517A/en active Pending
- 1979-09-26 GB GB7933255A patent/GB2031623A/en not_active Withdrawn
- 1979-09-26 BE BE0/197325A patent/BE879011A/en not_active IP Right Cessation
- 1979-09-27 FR FR7924132A patent/FR2437721A1/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2937298A1 (en) * | 1979-09-12 | 1981-04-02 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Power pack for mining equipment with built-in protection - has low ripple and includes output limiting inductance and clamping diodes controlling FET |
| DE3150398A1 (en) * | 1981-12-16 | 1983-06-23 | Siemens AG, 1000 Berlin und 8000 München | INTRINSICALLY SAFE POWER SUPPLY DEVICE WITH A CONTROLLABLE SEMICONDUCTOR SITUATED IN THE PRIMARY CIRCUIT OF A TRANSFORMER |
| US4646219A (en) * | 1981-12-16 | 1987-02-24 | Siemens Aktiengesellschaft | Intrinsically safe power supply with a current regulator |
| DE3322278A1 (en) * | 1983-06-16 | 1984-12-20 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for regulating the output voltage of a power supply apparatus |
| DE4121634A1 (en) * | 1990-08-09 | 1992-02-13 | Promos Electronic Gmbh | POWER SUPPLY FOR INTRINSICALLY SAFE CIRCUITS |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2437721A1 (en) | 1980-04-25 |
| BE879011A (en) | 1980-01-16 |
| FR2437721B3 (en) | 1981-07-17 |
| JPS5547517A (en) | 1980-04-04 |
| GB2031623A (en) | 1980-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| 8130 | Withdrawal |