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 PDF

Info

Publication number
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
Authority
DE
Germany
Prior art keywords
electronic
network
voltage
phase
transformer
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Withdrawn
Application number
DE201010048866
Other languages
German (de)
Inventor
Anmelder Gleich
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE201010048866 priority Critical patent/DE102010048866A1/en
Publication of DE102010048866A1 publication Critical patent/DE102010048866A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion 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
    • H02M5/04Conversion 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
    • H02M5/22Conversion 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
    • H02M5/225Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

The transformer has a control electronic circuit and an optocoupler, where an electronic flux converter enables energy transmission from a medium voltage three-phase network at network three-phase voltage of 400V over the transformer. Dynamic control of the network is implemented according to a preset reference value on a network voltage side. Power adjustments in a local network are performed by decreasing the network voltage at the voltages of 400V or 230V. The flux converter changes impedance in the network to maintain a constant voltage.

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-voltage 400 V 50 Hz are generated. Since there are many small feeders through PV systems in the networks, the voltage is steadily increased.

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 drawing 1.

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 claim 1. In addition, a better efficiency is achieved and contributes to environmental protection.

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 claim 2, Solwertvorgabe is possible and very important for the power quality. As more and more feeders of photovoltaic systems cause problems with voltage boosts in the grid.

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 drawing 2.

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 claim 3, one could at peak load times the electronic transformers z. B. via a potential-free contact to a minimum voltage and thus affect the performance, or directly control the electronic network transformer via a data bus and regulate.

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-voltage network 6 20 kv feeds. See claim 5.

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)

Energieübertragung vom Mittelspannungsdrehstromnetze 6–20 KV auf Netzdrehspannung 400 V 50 Hz über einen elektronischen Drehstromnetztrafo durch Flusswandler.Energy transfer from the medium-voltage three-phase network 6-20 KV to line voltage 400 V 50 Hz via an electronic three-phase network transformer through a flux converter. Die Möglichkeit der dynamischen Regelung nach Sollwertvorgabe auf der Netzspannungsseite.The possibility of dynamic control according to setpoint specification on the mains voltage side. Leistungsregelungen im Ortsnetz durch Absenkung der Netzspannung auf die vom Gesetzgeber vorgeschriebenen Spannungen 400 V/230 V 50 Hz +/– 10%.Power regulation in the local network by lowering the mains voltage to the voltage prescribed by law 400 V / 230 V 50 Hz +/- 10%. Regelungen über Tageslicht bei vielen Einspeisern von Photovoltaikanlagen.Daylight regulations for many feeders of photovoltaic systems. Eine erweiterte Möglichkeit des elektronischen Drehstromnetztrafos für Leistungsübertragung in beiden Richtungen. Lieferung und Bezug vom Mittelspannungsnetz. Siehe Zeichnung 3.An extended possibility of the electronic three-phase power transformer for power transmission in both directions. Delivery and purchase from the medium voltage network. See drawing 3.
DE201010048866 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 Withdrawn DE102010048866A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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
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)

Publication Number Publication Date
DE102010048866A1 true DE102010048866A1 (en) 2012-04-19

Family

ID=45895867

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (1)

Country Link
DE (1) DE102010048866A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
DE102009033515A1 (en) Static converter and method for starting the converter
DE202009019050U1 (en) Device for transmission line control
DE102009014243A1 (en) Local power transformer or circuit for electrical distribution transformer for control or regulation of voltage range of every phase for low voltage level, is provided with distribution transformer with primary and secondary coiling
EP3080821A1 (en) Device and method for reducing a magnetic unidirectional flux component in the core of a transformer
WO2016066484A2 (en) Inverter and reactor for rejecting common-mode interferences
DE102010015276A1 (en) Control / regulation of the secondary voltage of local power transformers through the use of line-commutated inverters
DE102012109293A1 (en) Three-phase reactor power saving device
EP3413422B1 (en) Local network station with variable low voltage outputs
EP2831894B1 (en) Secondary distribution network transformer
DE102010048866A1 (en) 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
AT512779B1 (en) Power supply for an inverter
DE202012103742U1 (en) Einphasendrossel energy saving device
EP3786986B1 (en) Circuit assembly for the reduction of a unidirectional flux component in the soft magnetic core of a transformer
EP3005383B1 (en) Apparatus for reducing a magnetic unidirectional flux component in the core of a transformer
CN203377570U (en) Self-energized-regulation ice-melting power source
EP3596792B1 (en) Electrical energy supplying network and method for operating thereof
AT519338A1 (en) Circuit arrangement for reducing a DC component in the soft magnetic core of a transformer
DE102014116846A1 (en) Electromagnetic mains voltage regulation and Smart Grid application
DE102013001422A1 (en) Power circuit for alternating current-power source of electronic device, has amplifier connected to direct voltage control unit to amplify direct voltage outputted by control unit and convert direct voltage into alternating voltage
DE202012104973U1 (en) Arrangement for uninterruptible power supply, namely online UPS
Kalaskar et al. Report On Harmonics Generation and Mitigation in Power System
DE10118569A1 (en) Circuit arrangement for testing uninterruptible power supplies is connected to the UPS on its input side and connected to the power supply network on its output side via a swing transformer and an equalizing coil
EP3103125A1 (en) Apparatus for reducing a magnetic unidirectional flux component in the core of a transformer
AT79744B (en) Safety system for the automatic shutdown of faulty sections of electrical line networks.
DE202012006784U1 (en) LED control with autotransformer

Legal Events

Date Code Title Description
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20130501