DE1613445B1 - CIRCUIT ARRANGEMENT FOR OVERLOAD AND SHORT-CIRCUIT PROTECTION OF A DC VOLTAGE CONVERTER - Google Patents
CIRCUIT ARRANGEMENT FOR OVERLOAD AND SHORT-CIRCUIT PROTECTION OF A DC VOLTAGE CONVERTERInfo
- Publication number
- DE1613445B1 DE1613445B1 DE19671613445 DE1613445A DE1613445B1 DE 1613445 B1 DE1613445 B1 DE 1613445B1 DE 19671613445 DE19671613445 DE 19671613445 DE 1613445 A DE1613445 A DE 1613445A DE 1613445 B1 DE1613445 B1 DE 1613445B1
- Authority
- DE
- Germany
- Prior art keywords
- load
- transistor
- converter
- circuit
- resistor
- 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
Links
Classifications
-
- 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
-
- 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
- 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Description
3 43 4
Siebkette mit der Hauptwicklung 3 und dem Konden- abfalle für den Steuerkreis des Transistors 13 bewirkt. sator5 aufgeladen. Öffnet sich der Schalter!, dann Der Widerstand der Zusatzwicklung4 ist höher beentlädt sich die Siebkette 3/5 über den Lastwider- messen als der der Hauptwicklung 3. Mit einem stand 6, wobei eine Diode 10 die Verbindung zum Regelwiderstand 14 wird der Strom durch diese Gegenpol (Masse) herstellt. Zur Stabilisierung der S Wicklung 4 so eingestellt, daß der Transistor 13 noch Ausgangsspannung ist ein Transsistor 11 vorgesehen, gesperrt ist, wenn der höchstzulässige Laststrom dessen Basis durch die Ausgangsspannung gesteuert durch die Hauptwicklung 3 fließt. Dann sind die wird. Sobald der durch eine Zenerdiode 12 gegebene Gleichspannungsabfälle an den beiden Wicklungen Schwellwert überschritten ist, wird der Transistor 11 nahezu gleich und deren Differenzwert etwa Null, leitend und beeinflußt den Modulator 8 derart, daß io Damit dieser Schwellwert von der Temperatur der sich die Breite der an den Impulsformer 9 abge- Wicklungen unabhängig ist, bestehen nach einer gebenen Impulse vermindert. Ausgestaltung der Erfindung beide Wicklungen ausSieve chain with the main winding 3 and the condensate waste for the control circuit of the transistor 13 causes. sator5 charged. If the switch opens !, then the resistance of the additional winding4 is higher discharged the sieve chain 3/5 over the load resistance than that of the main winding 3. With a stand 6, with a diode 10 connecting to the variable resistor 14, the current is through this Opposite pole (ground) produces. To stabilize the S winding 4 set so that the transistor 13 still Output voltage is provided by a transistor 11, which is blocked when the maximum permissible load current is reached whose base flows through the main winding 3 controlled by the output voltage. Then they are will. As soon as the DC voltage drop across the two windings is given by a Zener diode 12 The threshold value is exceeded, the transistor 11 is almost the same and its difference value is approximately zero, conductive and influences the modulator 8 in such a way that io This threshold value depends on the temperature of the the width of the windings on the pulse shaper 9 is independent, exist after a given impulses decreased. Embodiment of the invention from both windings
Während des normalen Betriebes wird demnach demselben Drahtmaterial oder aus Materialien mit der Transistor 11 die Schaltzeiten des Schalters 2 bei gleichem Temperaturbeiwert für die Widerstandssteigender Ausgangsspannung verkürzen. Bei Über- 15 änderung. Ferner sind nach einer weiteren Ausgelast und im Kurzschlußfall, wenn der Schwellwert staltung der Erfindung beide Wicklungen auch therder Zenerdiode 12 unterschritten ist, ist der Tran- misch miteinander gekoppelt.During normal operation, the same wire material or materials are used the transistor 11 the switching times of the switch 2 with the same temperature coefficient for the resistance increasing Shorten output voltage. In the event of a change. Furthermore, they are busy after another and in the event of a short circuit, if the threshold value arrangement of the invention, both windings also therder Zener diode 12 is undershot, the tran- mix is coupled to one another.
sistor 11 unwirksam, und es stellt sich die maximale Liegt der Laststrom unter dem zulässigen Höchst-sistor 11 is ineffective, and the maximum is the load current is below the maximum permissible
Breite der Schaltimpulse ein. Das führt zur Zer- wert, so überwiegt der Spannungsabfall an derWidth of the switching impulses. This leads to the decomposition, so the voltage drop on the predominates
störung des Transistors 2, der nicht in der Lage ist, 20 Zusatzwicklung 4, und der Transistor 13 ist gesperrt,disturbance of transistor 2, which is not able to 20 additional winding 4, and transistor 13 is blocked,
den Überstrom über lange Zeit auszuhalten. Es ist Wird der Höchstwert überschritten oder tritt einwithstand the overcurrent for a long time. It is exceeded or occurs
deshalb eine Anordnung notwendig, die vom Last- Kurzschluß ein, dann überwiegt der Spannungsabfalltherefore an arrangement is necessary, from the load short-circuit on, then the voltage drop predominates
strom beeinflußt die Schaltzeiten des Transistors 2 an der Hauptwicklung 3, und der Transistor 13 wirdcurrent affects the switching times of the transistor 2 on the main winding 3, and the transistor 13 is
herabsetzt, wenn ein vorgegebener Höchstwert der leitend. Dieser steuert den Impulsformer 9 derart,reduces when a specified maximum value of the conductive. This controls the pulse shaper 9 in such a way,
Belastung überschritten ist. 25 daß die Impulsdauer so weit verkürzt wird oder dessenLoad is exceeded. 25 that the pulse duration is shortened so much or its
Hierzu erhält die Siebdrossel außer der Haupt- Impulse den Schalter 2 so lange nicht erreichen, bis wicklung 3 eine Zusatzwicklung 4 mit gleicher Win- der Strom durch die Wicklung 3 den unzulässigen dungszahl. Die Anfänge dieser beiden Wicklungen Wert unterschritten hat und der Transistor 13 wieder sind miteinander verbunden, und an den Enden der- gesperrt ist. Die Schaltgeschwindigkeit des Transeiben liegt die Basis-Emitter-Strecke eines Tran- 30 sistors 13 ist im wesentlichen durch die Zeitkonstante sistors 13. Auf diese Weise ist der Gleichspannungs- bestimmt, welche die mit dem sehr niedrigen Lastabfall an der vom Laststrom durchflossenen Haupt- widerstand 6 abgeschlossene Siebkette im Überwicklung 3 an dem Transistor 13 wirksam, wobei die lastungsfall aufweist. Jedenfalls ist die Schalt-Zusatzwicklung 4 eine Kompensation der Rest- geschwindigkeit so kurz, daß keine Überströme und welligkeit und, z. B. durch kurzzeitige Überströme 35 Stromflußzeiten durch den Schalter 2 entstehen hervorgerufener, sonstiger induktiver Spannungs- können, die zu dessen Zerstörung führen.For this purpose, the filter throttle does not receive the main pulses until it reaches switch 2 winding 3 an additional winding 4 with the same winding current through the winding 3 is the impermissible application number. The value has fallen below the beginnings of these two windings and the transistor 13 again are connected to each other, and at the ends of the- is locked. The switching speed of the sheaves The base-emitter path of a transistor 13 is essentially due to the time constant sistor 13. In this way the DC voltage is determined, which is the one with the very low load drop at the main resistor 6, through which the load current flows, closed sieve chain in the overwinding 3 effective at transistor 13, the load case having. In any case, the additional switching winding is 4 a compensation of the remaining speed so short that no overcurrents and ripples and, z. B. by brief overcurrents 35 current flow times through the switch 2 arise caused, other inductive voltage, which lead to its destruction.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
CopyCopy
Claims (3)
des Spannungsteilers (4,14) die ZusatzwicMung Die Aufgabe der Erfindung besteht darin, eineEmitter path of the transistor (13) with this also in case of overload due to the constant control circuit are provided in such a way that the Tran current flow times a through the smallest provided sistor (13) in the conductive state, the current flow 30 switching frequency of the converter and the current flow times of the Converter shortens that the filter throttle flows a specified minimum current. Due to the addition of a HauptwicMung (3) a Zusatzwick- Hch to the filter choke provided first resistor (4), which has the same turn as a measuring resistor in the load current path is also number as the HauptwieMung (3), and that as only a corresponding power loss and with the first resistance the main winding (3) and, as 35, a correspondingly high internal resistance of the resistance connected to this resistance DC-DC converter,
of the voltage divider (4,14) the additional winding The object of the invention is to provide a
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19671613445 DE1613445B1 (en) | 1967-07-26 | 1967-07-26 | CIRCUIT ARRANGEMENT FOR OVERLOAD AND SHORT-CIRCUIT PROTECTION OF A DC VOLTAGE CONVERTER |
JP43049693A JPS4824313B1 (en) | 1967-07-26 | 1968-07-16 | |
CH1096968A CH476409A (en) | 1967-07-26 | 1968-07-22 | Circuit arrangement for overload and short-circuit protection of a DC voltage converter |
GB3554368A GB1182058A (en) | 1967-07-26 | 1968-07-25 | Circuit Arrangement for the Overload and Short Circuit Protection of a D.C. Voltage Transformer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19671613445 DE1613445B1 (en) | 1967-07-26 | 1967-07-26 | CIRCUIT ARRANGEMENT FOR OVERLOAD AND SHORT-CIRCUIT PROTECTION OF A DC VOLTAGE CONVERTER |
DEST027172 | 1967-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1613445B1 true DE1613445B1 (en) | 1972-03-09 |
Family
ID=25753678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671613445 Pending DE1613445B1 (en) | 1967-07-26 | 1967-07-26 | CIRCUIT ARRANGEMENT FOR OVERLOAD AND SHORT-CIRCUIT PROTECTION OF A DC VOLTAGE CONVERTER |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH476409A (en) |
DE (1) | DE1613445B1 (en) |
GB (1) | GB1182058A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2640354A1 (en) * | 1975-09-10 | 1977-03-17 | Honeywell Inf Systems | DYNAMIC CURRENT LIMITING CIRCUIT |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9005300D0 (en) * | 1990-03-09 | 1990-05-02 | Sunleigh Electrical Developmen | Power supply circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE621277A (en) * | 1960-02-24 |
-
1967
- 1967-07-26 DE DE19671613445 patent/DE1613445B1/en active Pending
-
1968
- 1968-07-22 CH CH1096968A patent/CH476409A/en not_active IP Right Cessation
- 1968-07-25 GB GB3554368A patent/GB1182058A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE621277A (en) * | 1960-02-24 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2640354A1 (en) * | 1975-09-10 | 1977-03-17 | Honeywell Inf Systems | DYNAMIC CURRENT LIMITING CIRCUIT |
Also Published As
Publication number | Publication date |
---|---|
CH476409A (en) | 1969-07-31 |
GB1182058A (en) | 1970-02-25 |
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