DE3005151A1 - COMMUTING DEVICE FOR A PHASE-REQUIRED INVERTER - Google Patents
COMMUTING DEVICE FOR A PHASE-REQUIRED INVERTERInfo
- Publication number
- DE3005151A1 DE3005151A1 DE19803005151 DE3005151A DE3005151A1 DE 3005151 A1 DE3005151 A1 DE 3005151A1 DE 19803005151 DE19803005151 DE 19803005151 DE 3005151 A DE3005151 A DE 3005151A DE 3005151 A1 DE3005151 A1 DE 3005151A1
- Authority
- DE
- Germany
- Prior art keywords
- phase
- inverter
- current
- phase sequence
- parallel
- 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.)
- Ceased
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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/5152—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with separate extinguishing means
- H02M7/5155—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with separate extinguishing means wherein each commutation element has its own extinguishing means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Description
.Beschreibung.Description
Die .Erfindung bezieht sich, aul' einen selDstgefuhrten Wechselrichter gemäß dem Oberbegriff des Patentanspruches. Ein solcher Wechselrichter ist aus "Technische Mitteilungen AEG-Telefunicen" 67 (1977; Heit 1, Seiten 11 - 15, begannt.The invention relates to 'a self-produced' Inverter according to the preamble of claim. Such an inverter is from "Technische Mitteilungen AEG-Telefunicen" 67 (1977; Heit 1, pages 11-15, began.
Derartige Wechselrichter werden vorteilhafterweise bei aer Speisung von Drehstrom-Asynchronmotoren über zwischenkreisumrichter mit eingeprägtem Strom eingesetzt. Bei aer Phasenfolgelöschung erfolgt dabei die Umladung der üommutierungsjcondensatoren durch den Ii as t strom.Such inverters are advantageously used when feeding three-phase asynchronous motors DC link converter with impressed current used. In the case of phase sequence deletion, the Charge reversal of the commutation capacitors through the Ii as t electricity.
Fig. 1a zeigt die Schaltung des Wechselrichters, der einen dreiphasigen notor Π speist. Am Anfang seien die Thyristoren To und I1, leitend. JJie Kondensatoren ü sind in der eingetragenen Polarität aufgeladen. "Wenn der Thyristor 1I^ gezündet wird, schaltet er die Kondensatorspannung so an den Thyristor τ , ^Laii dieser sperrt. Der Motorstrom Kxmunutiert in die üommutierungskondensatoren G und lädt sie um. Dieser Zustand ist in Fig. 1a dargestellt. Zur besseren Übersicht sind in der Zeichnung die stromführenden Halbleiterelemente schwarz ausgezeichnet, während sperrende Halbleiterelemente nur umrandet sind.Fig. 1a shows the circuit of the inverter that feeds a three-phase notor Π. At the beginning, let the thyristors To and I 1 be conductive. The capacitors are charged with the polarity shown. "When the thyristor 1 I ^ is ignited, it switches the capacitor voltage to the thyristor τ, ^ Laii this blocks. The motor current Kxmunutiert in the üommutierungskondensatoren G and recharges. This state is shown in Fig. 1a. For a better overview In the drawing, the current-carrying semiconductor elements are marked in black, while blocking semiconductor elements are only outlined.
130033/0543130033/0543
fi f i
In Fig. 1b ist der Verlauf der7uG an einem Kondensator G im Verhältnis zu einer Phasenspannung up, des Motors M und in Fig. 1c ist der zeitliche Verlauf des zugehörigen Kondensatorstromes In dargestellt.In Fig. 1b the course of the 7u G on a capacitor G is shown in relation to a phase voltage u p of the motor M and in Fig. 1c the time course of the associated capacitor current I n is shown.
Bei kleinen Lastströmen dauert die Umladung Jedes Kondensators lange, wodurch der Laststrom nach unten oder die Frequenz nach oben begrenzt werden.In the case of small load currents, the charge reversal of each capacitor takes a long time, which causes the load current to go down or the frequency can be limited upwards.
Der Erfindung liegt die Aufgabe zugrunde, eine wenig aufwendige Schaltung anzugeben, durch die unabhängig von der Höhe des Laststromes innerhalb einer definierten Zeit die Umladung der Kondensatoren sichergestellt ist.The invention is based on the object of specifying an inexpensive circuit through which independent of the level of the load current within a defined time the reloading of the capacitors is ensured.
Diese Aufgabe wird gemäß der Erfindung bei einem selbctgeführten Wechselrichter der eingangs angegebenen Art durch die im Patentanspruch gekennzeichneten Merkmale gelöst.This object is achieved according to the invention in a self-guided Inverter of the type specified at the outset by the features characterized in the patent claim solved.
Die Erfindung macht mithin auf überraschende Weise vom Einsatz eines Umschwingkrcises Gebrauch, wie er in Gleichstromstellern als Rückschwingkreis gebräuchlich ist (vgl. K. Heumann, Grundlagen der Leistungselektronik, B.G-. Teubner, Stuttgart, 1975, Seite 119)· Dem Laststrom überlagert sich mithin auf vorteilhafte Weise im Kondensator ein Schwingstrom, der den Umladungsvorgang beschleunigt und die Umladung unabhängig von der Höhe des Laststromes in bestimmter Zeit gewährleistet.The invention therefore makes in a surprising way from Use of a reversing circuit, as it is in DC converters is commonly used as a resonant circuit (see K. Heumann, Fundamentals of Power Electronics, B.G-. Teubner, Stuttgart, 1975, page 119) · The load current An oscillating current is therefore advantageously superimposed in the capacitor, which accelerates the charge reversal process and the reloading is guaranteed regardless of the level of the load current in a certain time.
130033/0543130033/0543
BAD ORIGINALBATH ORIGINAL
Die Erfindung soll anhand eines in den Figuren 2a - 2c dargestellten Ausführungsbeispiels im folgenden erläutert werden.The invention is to be explained in the following on the basis of an exemplary embodiment shown in FIGS. 2a-2c will.
Ir: Fig. 2a ist wie in Fig. 1a ein ana sechs Thyristoren T aufgebauter Wechselrichter dargestellt, der aus einer Glcichopannungsquelle einen Dreiphasenaiotor M speist. Zur Phasenfolgolöschung sind zwischen die miteinander korrnutierenden Phasen jeweils Koiiüirutierung^kondeiioacoren C geschaltet, die durch Blockdioden B von dem Motor ΓΊ entkoppeil sind. Wie in Fig. Iuso ist auch in Fig. 2a ein in gleicher Weise geführter Stroirrpfad mittels ausgezogener Pfeile <.ingezeieh.net, dor eine Umladung der Kommu tit: runge kondonnotoren C in der unteren Brückenhälfte bewirkυ. D-'ibei Ρΐΐκϊ wiederum die stromführenden Halbleiterelement··;; nchwirz ausgezeichnet, uv'hrend die sperrenden Halbleiter— eLerente in ihren Konturen dargestellt sind.Ir: As in FIG. 1a, FIG. 2a shows an inverter built up ana six thyristors T, which feeds a three-phase motor M from a DC voltage source. For phase sequence deletion, between the mutually corrnutating phases, conduction conducers C are connected, which are decoupled from the motor by block diodes B. As in Fig. 2a, in Fig. 2a a stroke path guided in the same way by means of solid arrows is shown, which causes a reloading of the commutation condenser motors C in the lower half of the bridge. D-'ibei Ρΐΐκϊ turn the current-carrying semiconductor element ·· ;; Really excellent, while the blocking semiconductor elements are shown in their contours.
1st dieser eingezeichnete Las.tstrom klein, so dauert die Ucil.-iiung der Kommutierungskondenaatoren C - v.-ie in ion -?ig. 1b und Ic dargestellt - lange. Zur schnelleren Y::l a .i'.-.ng lev Kcniinuti erui:gskondensatoreii C ist deshaiü Jeden Thyi'iston T die Reihenschaltung aus einer U:nschv.ringdrossel L und einer ihm antiparallel geschalteten Diode vorgesehen, durch die ein zusätzlicher Umschwingstrom fließt. Diener Uip.schwingstxOiii ist in dorIf this drawn-in laser current is small, then the ucation of the commutation capacitors C - v.-ie in ion - lasts ? ig. 1b and Ic shown - long. For faster Y :: la .i '.-. Ng lev Kcniinuti erui: gskondensatoreii C is deshaiü every Thyi'iston T the series connection of a U: nschv. r ingdrossel L and an anti-parallel diode him provided by an additional reversing current flows. Servant Uip.schwingstxOiii is in dor
Fig. 2a gest2"ichelt eingezeichnet. Er überlagert sich r:;it dec: Laststrom zu den Kondensater-Umladestroin i,-,.2a gest2 "is drawn in. It is superimposed r:; it dec: load current to the condenser Umladestroin i, - ,.
130033/0543
, ,SAP .ORfGfNAL130033/0543
,, SAP .ORfGfNAL
In den Pig. 2b und 2c ist der zeitliche Verlauf der Kondensatorspannung uc im Verhältnis zu einer Phasenspannung Up, und der zugehörige Strom ic "bei vernachlässigbar kleinem Motorstrom i^ dargestellt. Wie man erkennt, ist aufgrund des Umschwingstromes auch ohne Kotorstrom i,, eine Umladung der Kommutierungskondensatoren C innerhalb einer vorgegt-bcnen Zeit gewährleistet. In the pig. 2b and 2c shows the time course of the capacitor voltage u c in relation to a phase voltage Up, and the associated current i c "with a negligibly small motor current i ^ Commutation capacitors C guaranteed within a predetermined time.
130033/0543130033/0543
BAD ORIGINALBATH ORIGINAL
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803005151 DE3005151A1 (en) | 1980-02-08 | 1980-02-08 | COMMUTING DEVICE FOR A PHASE-REQUIRED INVERTER |
| FR8102408A FR2475820A1 (en) | 1980-02-08 | 1981-02-06 | Free running inverter supplying three=phase asynchronous motor - uses thyristors parallel to phase shift choke and antiparallel phase shift diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803005151 DE3005151A1 (en) | 1980-02-08 | 1980-02-08 | COMMUTING DEVICE FOR A PHASE-REQUIRED INVERTER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3005151A1 true DE3005151A1 (en) | 1981-08-13 |
Family
ID=6094392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803005151 Ceased DE3005151A1 (en) | 1980-02-08 | 1980-02-08 | COMMUTING DEVICE FOR A PHASE-REQUIRED INVERTER |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3005151A1 (en) |
| FR (1) | FR2475820A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3703676A (en) * | 1970-05-15 | 1972-11-21 | Asea Ab | Inverter |
| DE2447324A1 (en) * | 1974-10-03 | 1976-04-08 | Siemens Ag | CONVERTER |
-
1980
- 1980-02-08 DE DE19803005151 patent/DE3005151A1/en not_active Ceased
-
1981
- 1981-02-06 FR FR8102408A patent/FR2475820A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2475820A1 (en) | 1981-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |