DE3150385A1 - Static network coupling for high power for coupling a three-phase network at a higher frequency and a single-phase network at a lower frequency - Google Patents

Static network coupling for high power for coupling a three-phase network at a higher frequency and a single-phase network at a lower frequency

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Publication number
DE3150385A1
DE3150385A1 DE19813150385 DE3150385A DE3150385A1 DE 3150385 A1 DE3150385 A1 DE 3150385A1 DE 19813150385 DE19813150385 DE 19813150385 DE 3150385 A DE3150385 A DE 3150385A DE 3150385 A1 DE3150385 A1 DE 3150385A1
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Germany
Prior art keywords
phase
network
phase network
coupling
frequency
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Granted
Application number
DE19813150385
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German (de)
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DE3150385C2 (en
Inventor
Hans-Peter Dr.-Ing. Beck
Ernst Dipl.-Ing. 1000 Berlin Golde
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.)
Licentia Patent Verwaltungs GmbH
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Licentia Patent Verwaltungs GmbH
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Priority to DE19813150385 priority Critical patent/DE3150385C2/en
Publication of DE3150385A1 publication Critical patent/DE3150385A1/en
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Publication of DE3150385C2 publication Critical patent/DE3150385C2/en
Expired legal-status Critical Current

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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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/27—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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 for conversion of frequency
    • H02M5/271—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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 for conversion of frequency from a three phase input voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/34—Arrangements for transfer of electric power between networks of substantially different frequency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks

Abstract

A static network coupling for high power for coupling a three-phase network at a higher frequency and a single-phase network at a lower frequency, having a frequency-reducing direct converter, which is connected to the three-phase network, with a three-phase output in which two phase outputs are connected to the single-phase network and, in each case via an electronic phase-shifter for balancing the load, to the third phase output, and having an electronic phase shifter which is arranged between the phase outputs connected to the single-phase network and has parallel capacitance for the entire single-phase reactive power, the object exists to achieve a supply of energy back from the single-phase network into the three-phase network as well, without any special increased circuitry cost. This is achieved in that the phase reversal required to supply electrical energy back from the single-phase network is always carried out electronically by changing over the delay angle of the direct converter. A particular field of application is railway power supplies.

Description

Statische Netz kupplung für hohe Leistung zurStatic power coupling for high performance

Kupplung eines Dreiphasennetzes höherer Frequenz und eines Einphasennetzes mit niedrigerer Frequenz Die Erfindung betrifft eine statische Netzkupplung für hohe Leistung zur Kupplung eines Dreiphasennetzes höherer Frequenz und eines Einphasennetzes mit niedrigerer Frequenz gemäß dem Oberbegriff des vorliegenden Patentanspruchs.Coupling of a three-phase network with a higher frequency and a single-phase network The invention relates to a static network coupling for high performance for coupling a three-phase network with a higher frequency and a single-phase network with a lower frequency according to the preamble of the present claim.

Aus der DE-OS 29 39 514 ist eine "Vorrichtung zur Ubertragung elektrischer Energie hoher Leistung aus einem dreiphasigen Versorgungsnetz höherer Frequenz in ein einphasiges Lastnetz niedrigerer Frequenz" bekannt, die zur Frequenzuntersetzung Drehstrom-Direktumrichter verwendet, die ein Einphasennetz speisen, das nach dem bekannten Steinmetz-Verfahren mit verstellbaren Blindwiaerständen kompensiert und symmetriert wird.From DE-OS 29 39 514 a "device for the transmission of electrical High power energy from a three-phase, higher frequency supply network in a single-phase load network of lower frequency "known for the frequency reduction Three-phase direct converters are used that feed a single-phase network that is well-known Steinmetz method with adjustable blind resistance compensated and is symmetrized.

In der Fig0 1 ist eine derartige Schaltung angegebene Die Direktumrichter 5, 6, 7 wandeln das Dreiphasennetz mit höherer Frequenz 13 in ein Dreiphasennetz mit niedrigerer Frequenz um und speisen über einen Transformator T, der zwischen die Ausgänge der Direktumrichter 5 und 6 geschaltet ist , das Einphasennetz 14 sowie zwei Saugkreise 8,9, die zwischen den Ausgängen der Direktumrichter 5 und 6 und 6 und 7 liegen und jeweils aus einem Kondensator und einer Drosselspule9 in Reihe geschaltet, bestehen, und drei geschaltete Drosselspulen 1011,12, deren Aufbau in Fig.la dargestellt ist und von denen die erste zwischen den Ausgängen der Direktumrichter 5 und 6, die zweite zwischen den Ausgängen der Direktumrichter 6 und 7 und die dritte zwischen den Ausgängen der Direktumrichter 5 und 7 liegt.In Fig0 1, such a circuit is specified The direct converter 5, 6, 7 convert the three-phase network with a higher frequency 13 into a three-phase network at a lower frequency and feed via a transformer T, which is between the outputs of the direct converters 5 and 6 is switched, the single-phase network 14 and two suction circuits 8,9, which between the outputs of the direct converters 5 and 6 and 6 and 7 are and each consist of a capacitor and a choke coil9 in series switched, consist, and three switched choke coils 1011,12, the structure of which is shown in Fig.la is shown and of which the first between the outputs of the direct converter 5 and 6, the second between the outputs of the direct converters 6 and 7 and the third between the outputs of the direct converters 5 and 7.

Fließt die elektrische energie vom Dreiphasennetz zum Einphasennetz, müssen die Direktumrichter am Ausgang (Klemmen 1, 2, 3) ein rechtsdrehendes symmetrisches Spannungssystem erzeugen.If the electrical energy flows from the three-phase network to the single-phase network, the direct converter must have a clockwise symmetrical at the output (terminals 1, 2, 3) Generate tension system.

Soll die Eneregierichtung umgekehrt werden, muß entweder der Saugkreis 9 zwischen die Anschlüsse 1 und 3 gelegt werden oder das speisende rechtsdrehende Drehfeld durch ein Vertauschen der Anschlüsse 2 und 3 in ein linksdrehendes verwandelt werden. Dies ist bei der Schaltungsanordnung gemäß der genannten Offenlegungsschrift aber nicht vorgesehen.If the direction of energy is to be reversed, either the suction circuit must be used 9 can be placed between connections 1 and 3 or the feeding clockwise The rotating field is converted into a counterclockwise rotating field by swapping connections 2 and 3 will. This is the case with the circuit arrangement according to the published patent application cited but not provided.

Bei der Vorrichtung zur Energieübertragung kann daher auch nicht von einer Netzkupplung gesprochen werden.In the case of the device for energy transmission, therefore, can also not be of a network coupling are spoken.

Die Aufgabe der Erfindung besteht darin, die bekannte -Vorrichtung zur Übertragung elektrischer Energie aus dem Dreiphasen- in das Einphasennetz so zu erweitern, daß eine Energierücklieferung vom Einphasen- in das Dreiphasennetz ohne besonderen Schaltungsmehraufwand möglich ist.The object of the invention is the known device for the transmission of electrical energy from the three-phase to the single-phase network see above to expand that energy return from the single-phase to the three-phase network without special circuit overhead is possible.

Dies wird erfindungsgemaß durch die im Kennzeichen des Patentanspruchs aufgeführten Merkmale erreicht.This is according to the invention by the characterizing part of the claim listed features achieved.

Es wird also die Phasenfolge in einem bestimmten Zeitpunkt durch Umschalten der Steuerfunktionen der Direktumrichter α1(t), α2(t), α3(t), vgl. Fig.1, vertauscht.So it is the phase sequence at a certain point in time by switching the control functions of the direct converters α1 (t), α2 (t), α3 (t), see Fig.1, reversed.

Dabei sind zwei Bedingungen zu erfüllen: 1. Der Zeitverlauf der Ausgangsspannung u12 zwischen den Direktumrichtern 5 und 6, vgl. Fig. 1, muß von der Phasenumschaltung unberührt bleiben.Two conditions have to be fulfilled: 1. The time curve of the output voltage u12 between the direct converters 5 and 6, see Fig. 1, must be affected by the phase changeover remain untouched.

2. Der Zeitverlauf der Ausgangsspannung u23 zwischen den Direktumrichtern 6 und 7, vgl. Fig. 1 muß bzgl. der Grundschwingung stetig bleiben, damit in dem Kondensator in der Kompensationseinrichtung 9 keine unzulässig hohen Ausgleichsströme fließen. 2. The time course of the output voltage u23 between the direct converters 6 and 7, see Fig. 1, must remain constant with respect to the fundamental oscillation so that in the Capacitor in the compensation device 9 no unacceptably high equalizing currents flow.

Die Ausgangsspannungen u12, u23, u31 (u31 Ausgangsspannung zwischen den Direktumrichtern 7 und 5) werden aus den Strangspannungen u1, u2, u3 nach den Gleichungen u12 - U-1 - U2 (1) U23 3 u2 - u3 (2) 1 (3)-U31 = u3 -U gebildet. Die Bedingungen 1, 2- können erfüllt werden, wenn die Strangspannungen im Nulldurchgang von (u3(tU) = O) an der Senkrechten gespiegelt werden, vgl.The output voltages u12, u23, u31 (u31 output voltage between the direct converters 7 and 5) are derived from the phase voltages u1, u2, u3 according to the Equations u12 - U-1 - U2 (1) U23 3 u2 - u3 (2) 1 (3) -U31 = u3 -U formed. the Conditions 1, 2- can be met if the phase voltages are in the zero crossing be mirrored by (u3 (tU) = O) on the vertical, cf.

Fig. 2, in der die bei t = tu an der Senkrechten gespiegelten Strangspannungen dargestellt sind.Fig. 2, in which the phase stresses mirrored at t = tu on the vertical are shown.

In diesem Zeitpunkt gilt u3(tU) = -u3(tU) (4) u1(tU) = -u2(tU) (5) und u2(tU) = -u1(tU) (6) Daher ist ein stetiges Umschalten der Steuerfunktionen α1(t), α2(t), α3(t) möglich.At this point in time applies u3 (tU) = -u3 (tU) (4) u1 (tU) = -u2 (tU) (5) and u2 (tU) = -u1 (tU) (6) Therefore, there is a constant switching of the control functions α1 (t), α2 (t), α3 (t) possible.

Nach dem Umschalten gilt u1(t>tU) = - u2(t<tU) (7) u2(t>tU) = - u1(t<tU) (8) u3(t>tU) = - u3(t<tU) (9) Setzt man Gl. (7,8) in (1) ein, erkennt man, daß sich u12 nicht ändert.After switching, u1 (t> tU) = - u2 (t <tU) (7) u2 (t> tU) = - u1 (t <tU) (8) u3 (t> tU) = - u3 (t <tU) (9) If one sets Eq. (7,8) in (1) a, you can see that u12 does not change.

u12 = u1 - u2 (10) =- u2 - (u1) Weiterhin gilt u23(t>tU) = - u1 - (-u3) (11) = u3 - u1 = u31(t<tu) und u31(t>tU) = - u3 - (- u2) (12) =u2 - u3 =u23(t<tU) womit die Umkehrung des Drehsinns gezeigt ist. u12 = u1 - u2 (10) = - u2 - (u1) Furthermore, u23 (t> tU) = - u1 - (-u3) (11) = u3 - u1 = u31 (t <tu) and u31 (t> tU) = - u3 - (- u2) (12) = u2 - u3 = u23 (t <tU) which shows the reversal of the direction of rotation.

Figo 3 zeigt den Verlauf der Steuerfunktionen vor und nach der Umschaltung für sinusförmige Aussteuerung. In Fig. 2 sind die sich daraus ergebenden Strangspannungen eines dreiphasigen Zwölfpuls-Direktumrichters dargestellt.3 shows the course of the control functions before and after the switchover for sinusoidal modulation. In Fig. 2 are the resulting Phase voltages of a three-phase twelve-pulse direct converter shown.

Bildet man nach den Gln. (1), (2), (3) die verketteten Spannungen, fallen die durch drei teilbaren Oberschwingungen heraus. Es ergeben sich die in Fig. 4 dargestellten Xurvenverläufe.If one forms according to Eqs. (1), (2), (3) the linked voltages, the harmonics that can be divided by three drop out. The in Fig. 4 shown Xurve courses.

Die Simulationsergebnisse bestätigen die im Hinblick auf die Einhaltung der geforderten Bedingungen richtige Wahl des Umschaltzeitpunktes, der jeweils nach T/2 wiederkehrt und eine elektronische Phasenumkehr mit einer Totzeit, die glei.ch der halben Netzperiodendauer ist, erlaubt.The simulation results confirm that with regard to compliance of the required conditions correct choice of the switching time, which in each case after T / 2 recurs and an electronic phase reversal with a dead time, the glei.ch half the network period is allowed.

Das angegebene Verfahren zur Umkehrung der Phasenfolge ist selbstverständlich nicht auf die Phasen 2, 3 beschränkt.The specified procedure for reversing the phase sequence is self-evident not limited to phases 2 and 3.

Es kann durch zyklisches Vertauschen der Phasenbenennungen auch auf die übrigen beiden Phasen 1, 2 und 1, 3 angewendet werden.It can also be activated by cyclically swapping the phase names the other two phases 1, 2 and 1, 3 are applied.

Besondere Vorteile der statischen Netzkupplung gemäß der Erfindung bestehen darIn, dy: egenüber der eingangs genannten bekannten Vorrichtung kein Mehraufwand an Schaltgeräten erforderlich ist, daß der Umschaltvorgang nur eine geringe Totzeit aufweist und keine Ausgleichsschwingungen nach dem Umschaltvorgang auftreten.Particular advantages of the static network coupling according to the invention there is no additional expense compared to the known device mentioned at the beginning on switching devices it is necessary that the switching process only has a short dead time and no compensating oscillations occur after the switchover process.

L e e r s e i t eL e r s e i t e

Claims (1)

Patentanspruch Statische Netzkupplung für hohe Leistung zur Kupplung eines Dreiphasennetzes höherer Frequenz und eines Einphasennetzes mit niedrigerer Frequenz mit einem am Dreiphasennetz angeschlossenen frequenzuntersetzenden Direktumrichter mit einem dreiphasigen Ausgang, bei dem zwei Phasenausgänge mit dem Einphasennetz und jeweils über einen elektronischen Phasenschieber zur Symmetrierung der Last mit dem dritten Phasenausgang verbunden sind und einen zwischen den ans Einphasennetz angeschlossenen Phasenausgängen angeordneten elektronischen Phasenschieber mit Parallelkapazität für die gesamte Einphasenblindleistung, dadurch gekennzeichnet, daß die bei Rückspeisung der elektrischen Energie aus dem Einphasennetz erforderliche Phåsenumkehr auf elektronischem Wege stetig durch Umschaltung der Steuerwinkel der Direktumrichter erfolgt.Static network coupling for high performance for coupling a three-phase network with a higher frequency and a single-phase network with a lower frequency Frequency with a frequency-reducing direct converter connected to the three-phase network with a three-phase output, in which two phase outputs with the single-phase network and each via an electronic phase shifter to balance the load are connected to the third phase output and one between the connected to the single-phase network connected phase outputs arranged electronic phase shifter with parallel capacitance for the entire single-phase reactive power, characterized in that the feedback of the electrical energy from the single-phase network required phase reversal on electronic Paths are made continuously by switching over the control angle of the direct converter.
DE19813150385 1981-12-17 1981-12-17 Static network coupling for high performance for coupling a three-phase network with a higher frequency and a single-phase network with a lower frequency Expired DE3150385C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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DE19813150385 DE3150385C2 (en) 1981-12-17 1981-12-17 Static network coupling for high performance for coupling a three-phase network with a higher frequency and a single-phase network with a lower frequency

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DE3150385A1 true DE3150385A1 (en) 1983-06-30
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084812A (en) * 1989-10-19 1992-01-28 Asea Brown Boveri Ltd. Arrangement for converting two single-phase alternating currents into a symmetric three-phase current
WO1993018567A1 (en) * 1992-03-11 1993-09-16 Siemens Aktiengesellschaft Electric enery transmission system
WO1993018566A1 (en) * 1992-03-11 1993-09-16 Siemens Aktiengesellschaft Electric energy transmission system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE465745B (en) * 1990-02-05 1991-10-21 Asea Brown Boveri STATIC TRANSFORMER EQUIPMENT FOR TRANSFER OF POWER BETWEEN ONE THREE PHASE AND ONE PHASE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030222A1 (en) * 1970-06-19 1971-12-23 Inst Schiffbau Circuit arrangement for coupling electrical networks of any number of phases, voltage amplitudes and frequencies
DE2939514A1 (en) * 1979-09-28 1981-04-16 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR TRANSMITTING HIGH-PERFORMANCE ELECTRICAL ENERGY FROM A THREE-PHASE SUPPLY NETWORK HIGHER FREQUENCY TO A SINGLE-PHASE LOAD NETWORK LOWER FREQUENCY

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030222A1 (en) * 1970-06-19 1971-12-23 Inst Schiffbau Circuit arrangement for coupling electrical networks of any number of phases, voltage amplitudes and frequencies
DE2939514A1 (en) * 1979-09-28 1981-04-16 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR TRANSMITTING HIGH-PERFORMANCE ELECTRICAL ENERGY FROM A THREE-PHASE SUPPLY NETWORK HIGHER FREQUENCY TO A SINGLE-PHASE LOAD NETWORK LOWER FREQUENCY

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084812A (en) * 1989-10-19 1992-01-28 Asea Brown Boveri Ltd. Arrangement for converting two single-phase alternating currents into a symmetric three-phase current
WO1993018567A1 (en) * 1992-03-11 1993-09-16 Siemens Aktiengesellschaft Electric enery transmission system
WO1993018566A1 (en) * 1992-03-11 1993-09-16 Siemens Aktiengesellschaft Electric energy transmission system

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