DE102010048866A1 - Electronic three-phase current supply transformer for use in industries for power supply, has control electronic circuit, where electronic flux converter enables energy transmission from three-phase network at three-phase voltage - Google Patents
Electronic three-phase current supply transformer for use in industries for power supply, has control electronic circuit, where electronic flux converter enables energy transmission from three-phase network at three-phase voltage Download PDFInfo
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- DE102010048866A1 DE102010048866A1 DE201010048866 DE102010048866A DE102010048866A1 DE 102010048866 A1 DE102010048866 A1 DE 102010048866A1 DE 201010048866 DE201010048866 DE 201010048866 DE 102010048866 A DE102010048866 A DE 102010048866A DE 102010048866 A1 DE102010048866 A1 DE 102010048866A1
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- electronic
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- 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
- H02M5/225—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 comprising two stages of AC-AC conversion, e.g. having a high frequency intermediate link
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
Das Anwendungsgebiet ist in der Industrie und Stromversorgung. Überall wo Transformatoren eingesetzt werden die eine Spannungsregelung und Konstanthaltung der Spannung erforderlich machen. Schwerpunkt Mittelspannungsnetze von 6 bis 20 KV in denen auf der Niederspannungsseite 400 V 50 Hz erzeugt werden. Da sich viele kleine Einspeiser durch PV-Anlagen in den Netzen befinden wird die Spannung stetig angehoben.The field of application is in industry and power supply. Wherever transformers are used that require voltage regulation and constant voltage maintenance. Focus on medium-voltage networks from 6 to 20 kV in which low-
Einfache Netztransformatoren arbeiten bei Netzfrequenz mit 50 bzw. 60 Hz und sind relativ groß. Vergleich siehe Zeichnung 1.Simple mains transformers work at mains frequency with 50 or 60 Hz and are relatively large. Comparison see
Da die Änderung der Magnetfeldstärke ein wesentlicher Bestandteil der Transformator-Wirkweise ist, kann ein Trafo bei erhöhter Frequenz auch mehr Leistung übertragen. Mit anderen Worten kann mit steigender Frequenz die Windungszahl und/oder der Kernquerschnitt (Kernvolumen) abnehmen, ohne dass sich die Spannung verändert.Since the change in the magnetic field strength is an essential part of the transformer mode of action, a transformer can also transmit more power at an increased frequency. In other words, with increasing frequency, the number of turns and / or the core cross-section (core volume) may decrease without the voltage changing.
Fortschritte in der Halbleitertechnik ermöglichen es, die Eingangsspannung für den Transformator in höhere Frequenzen (bis einige 100 kHz) umzuformen. Damit wird eine wesentlich höhere Leistungsdichte erreicht und diese sogenannten elektronischen Transformatoren können erheblich kleiner und leichter als konventionelle Trafos gebaut werden. Siehe Patentanspruch 1. Zudem wird auch ein besserer Wirkungsgrad erreicht und trägt zum Umweltschutz bei.Advances in semiconductor technology make it possible to transform the input voltage for the transformer into higher frequencies (up to a few 100 kHz). Thus, a much higher power density is achieved and these so-called electronic transformers can be built much smaller and lighter than conventional transformers. See
Die Möglichkeit der dynamischen Regelung, siehe Patentanspruch 2, nach Solwertvorgabe ist möglich und sehr wichtig für die Netzqualität. Da immer mehr Einspeiser von Photovoltaikanlagen Probleme durch Spannungsanhebungen im Netz verursachen.The possibility of dynamic control, see
Durch den elektronischen Flusswandler besteht die Möglichkeit die Impedanz im Netz zu verändern und dadurch eine konstante Spannung zu halten was mit einfachen Netztrafos nicht der Fall ist, da sie mechanische Umschalter besitzen die nur im spannungslosen Zustand betätigt werden dürfen, um eine statische Angleichung an die Netzimpedanz vornehmen zu können.By the electronic flux converter it is possible to change the impedance in the network and thereby maintain a constant voltage which is not the case with simple power transformers, as they have mechanical switches that can only be operated in the de-energized state to a static equalization to the network impedance to be able to make.
Wirkungsweise elektronischer Drehstromnetztrafo siehe Zeichnung 2.Mode of operation of electronic three-phase current transformer, see
Elektroversorgungsunternehmen müssen eine eingekaufte Leistungsspitze halten. Um dies leichter zu ermöglichen, siehe Patentanspruch 3, könnte man bei Starklastzeiten die elektronischen Trafos z. B. über einen potentialfreien Kontakt auf eine Mindestspannung absenken und so die Leistung beeinflussen, oder über einen Datenbus direkt den elektronischen Netztrafo steuern und regeln.Electric utilities must hold a purchased peak in performance. To facilitate this, see
Bei Niederspannungsnetzen mit vielen Einspeisern, siehe Patentanspruch 4, besteht die Möglichkeit über einen Lichtsensor bei Tageslicht die Spannung abzusenken und bei Nacht die Spannung anzuheben um so die Netzqualität zu verbessern und sicher zu stellen.In low-voltage networks with many feeders, see claim 4, it is possible to lower the voltage via a light sensor in daylight and raise the voltage at night so as to improve the network quality and ensure safe.
Da in manchen Netzen mehr Energie erzeugt als verbraucht wird, besteht die Möglichkeit, siehe Zeichnung 3 einen elektronischen Drehstromnetztrafo so zu bauen das er über die Auswertung der Netzimpedanz eine automatische und störungsfreie Umschaltung von Bezug auf Lieferung vornimmt und die überschüssige Energie in das Mittelspannungsnetz 6–20 KV einspeist. Siehe Patentanspruch 5.Since in some networks more energy is generated than consumed, it is possible, see drawing 3 to build an electronic three-phase transformer so that he performs the evaluation of network impedance automatic and trouble-free switching from reference to delivery and the excess energy in the medium-
An den Schaltbildern des elektronischen Drehstromnetztransformators ist die Wirkungsweise schemenhaft dargestellt. (Zeichnung 2 und 3)On the circuit diagrams of the electronic three-phase power transformer, the operation is shown schematically. (Drawing 2 and 3)
Erläuterungen der einzelnen Stufen werden in der Zusammenfassung bei der Gegenüberstellung eines normalen Trafoprinzips mit dem eines elektronischen Trafoprinzips gezeigt. (Zeichnung 1)Explanations of the individual stages are shown in the summary in the comparison of a normal Trafoprinzips with that of an electronic Trafoprinzips. (Drawing 1)
Der Vorteil eines elektronischen Trafo zu einem normalen Trafo sind:
Besserer Wirkungsgrad und deshalb Umweltschutz.The advantage of an electronic transformer to a normal transformer are:
Better efficiency and therefore environmental protection.
Dynamische Regelung der Spannungsnetze und dadurch Verbesserung der Netzqualitäten.Dynamic regulation of the voltage networks and thus improvement of the network qualities.
Kleinere Bauform bei geringerem Gewicht und gleicher Leistung.Smaller design with lower weight and same performance.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE201010048866 DE102010048866A1 (en) | 2010-10-19 | 2010-10-19 | Electronic three-phase current supply transformer for use in industries for power supply, has control electronic circuit, where electronic flux converter enables energy transmission from three-phase network at three-phase voltage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE201010048866 DE102010048866A1 (en) | 2010-10-19 | 2010-10-19 | Electronic three-phase current supply transformer for use in industries for power supply, has control electronic circuit, where electronic flux converter enables energy transmission from three-phase network at three-phase voltage |
Publications (1)
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DE102010048866A1 true DE102010048866A1 (en) | 2012-04-19 |
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DE201010048866 Withdrawn DE102010048866A1 (en) | 2010-10-19 | 2010-10-19 | Electronic three-phase current supply transformer for use in industries for power supply, has control electronic circuit, where electronic flux converter enables energy transmission from three-phase network at three-phase voltage |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10205261A1 (en) * | 2002-02-08 | 2003-08-21 | Abb Research Ltd | Modular electrical energy distribution transformer has transformation modules between medium and low voltage d.c. intermediate circuits with d.c. voltage switching and transformers |
WO2009145380A1 (en) * | 2008-05-30 | 2009-12-03 | Kunsan National University Industry-Academy Cooperation Foundation | A grid-interactive photovoltaic generation system with power quality control and energy saving |
-
2010
- 2010-10-19 DE DE201010048866 patent/DE102010048866A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10205261A1 (en) * | 2002-02-08 | 2003-08-21 | Abb Research Ltd | Modular electrical energy distribution transformer has transformation modules between medium and low voltage d.c. intermediate circuits with d.c. voltage switching and transformers |
WO2009145380A1 (en) * | 2008-05-30 | 2009-12-03 | Kunsan National University Industry-Academy Cooperation Foundation | A grid-interactive photovoltaic generation system with power quality control and energy saving |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130501 |