EP2828867A1 - Power transformer with electronic components - Google Patents

Power transformer with electronic components

Info

Publication number
EP2828867A1
EP2828867A1 EP13704944.1A EP13704944A EP2828867A1 EP 2828867 A1 EP2828867 A1 EP 2828867A1 EP 13704944 A EP13704944 A EP 13704944A EP 2828867 A1 EP2828867 A1 EP 2828867A1
Authority
EP
European Patent Office
Prior art keywords
power transformer
electronic components
winding
stray field
core
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Withdrawn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
EP13704944.1A
Other languages
German (de)
French (fr)
Inventor
Volker Karrer
Karsten Viereck
Alexander Reich
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP2828867A1 publication Critical patent/EP2828867A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/346—Preventing or reducing leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances

Definitions

  • the invention relates to a power transformer with electronic components.
  • a tap changer with a motor drive is known. This is arranged on the outside of the housing of a power transformer.
  • the motor drive consists of many individual parts, including many electronic components. These include e.g. a drive motor, position transmitter, microcontroller and a
  • each component requires a power supply.
  • the power supply via a single cable, which connects this with a voltage source arranged in the vicinity realized.
  • Safety devices such as Buchholz relays, temperature sensors, dehumidifiers and gas-in-oil sensors. These too require a voltage source for operation. These safety devices are also located near the transformer and connected by cables to the safety devices. For example, the
  • Buchholz relay is mounted in the upper part of the power transformer, the, outside the housing laid, wiring to the power source is the correspondingly long.
  • Power transformers brings numerous disadvantages. Since power transformers are often in use for several decades, the cables must also ensure a reliable function during this time. However, since the plastic sheathing is exposed to different weather conditions (rain, UV radiation, etc.), open cable position or even fractures may occur. Due to the relatively low voltage levels required by the accessories, it requires a separate, laid only for these applications, line. This is not only costly, but also associated with high costs, since power transformers are often located in areas without low voltage supply. The variety of electronic components requires special installation expertise, as wiring can quickly lead to errors. The remotely located voltage sources complicate this additionally. Despite these disadvantages is a power supply of the electronic
  • the object of the invention is to arrange the power supply of the electronic components of a power transformer closer and thus to eliminate the disadvantages of the prior art.
  • a power transformer with electronic components which has a stray field collector, which is arranged directly in a stray flux of the power transformer.
  • Power transformers are a special kind of transformers that are mostly used in electrical energy networks. These can be designed very large and are able to convert voltages of several hundred kV. They usually consist of three ferromagnetic cores, as well as at least two conductors
  • Windings wrapped around each of the cores.
  • This structure is known inter alia from DE 2943626A1 and US201 1/0248808.
  • the cores are connected to each other at the top and bottom by a yoke and lined up.
  • a first conductor is wound around each core. This is called the first winding.
  • an insulating material is arranged between the core and the first winding to galvanically separate the two parts.
  • a second winding is arranged around the first winding. Both windings are also galvanic by an insulating material
  • the core of a power transformer is not formed solid, but from many stacked thin sheets. Stray fluxes can be achieved by close arrangements of the windings to each other, materials with high magnetic conductivity in the core and special structural design of the transformers, reduce. One manages not to hide the leakage flux completely. These leakage fluxes can be used by means of a stray field collector as energy supply.
  • FIG. 2 shows a stray field collector according to the invention
  • Figure 3 shows a stray field collector according to the invention directly to a
  • FIG. 5 shows a further power transformer with possible locations for
  • Figure 1 shows a known from the prior art power transformer 1 with electronic components.
  • On the outer wall 2 is u.a. a temperature sensor 3, load flow meter 4 and a drive unit 5 which drives an on-load stage switch 6 disposed inside.
  • a Buchholz relay 7 In the upper area are a Buchholz relay 7 and two
  • Dehumidifier 8 attached.
  • the section 9 shows the inside of the
  • Power transformer 1 are windings 10 and an indicated yoke 1 1 enclosing them. In the upper area are also insulators 12, through which the power transformer 1 is connected to high voltage power lines. The electronic components are connected to each other and to an external power supply.
  • Figure 2 shows a stray field collector 12 according to the invention consisting of a core 13 and a coil 14. If the stray field collector 12 is brought into an alternating magnetic flux, more precisely stray flux ⁇ , of an AC transformer, a voltage is induced in the coil 14. This voltage can be used to power different electronic components located near a power transformer.
  • the core 13 of the stray field collector 12 is not mandatory. This serves only to increase the inductance. Is this
  • FIG. 3 shows a winding arrangement known from DE 2943626A1 (FIG. 4), which consists of a winding core 15, a first winding 16 and a second winding 17. Both between the first winding 16 and the winding core 15, as well as between the first winding 16 and the second winding 17, an insulating material 18 is arranged to galvanically separate all parts from each other.
  • an alternating voltage is applied to the first winding 16
  • an alternating magnetic flux is generated in the winding core 15 due to the electromagnetic induction.
  • the magnetic alternating flux in turn induces a voltage in the second winding 17.
  • the magnetic flux that runs outside of the winding core 15 (leakage flux ⁇ ) is formed inter alia in the
  • FIG. 4 shows the power transformer 1 with possible positions E.F.G known from the prior art for the attachment of one or more stray field collectors 12.
  • FIG. 5 shows a further linear street sensor which is known from US201 / 0248808A1 (FIG. 2).
  • the three-phase power transformer 19 has three winding assemblies 20, which are connected at the upper or lower end via a yoke 21 with each other.
  • the areas H, J again identify positions where one or more
  • Stray field collector 12 can be arranged. With this arrangement, instead of the core 13, the yoke 21 can be used. Particularly advantageous in the invention is the fact that undesirable lost energy of the stray fields is used and thereby the entire system achieves a higher efficiency.
  • the recovered energy can e.g. for sensors that
  • the stray field collector 12 can be used not only in the high voltage range. Applications are also possible in the medium and low voltage range. It only requires an adjustment of the coil 14 of the stray field collector 12th

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

The invention relates to a power transformer with electronic components. The aim of the invention is to arrange the energy supply of the electronic components of a power transformer closer to the components and thus eliminate the disadvantages of the prior art. According to the invention, a stray field collector is brought into a stray field of the power transformer, whereby a voltage is generated.

Description

Leistungstransformator mit elektronischen Bauelementen  Power transformer with electronic components
Die Erfindung betrifft einen Leistungstransformator mit elektronischen Bauelementen. Aus der DE4214431 C2 ist ein Stufenschalter mit einem Motorantrieb bekannt. Dieser ist außen am Gehäuse eines Leistungstransformators angeordnet. Der Motorantrieb besteht aus vielen Einzelteilen, unter anderem auch aus zahlreichen elektronischen Bauelementen. Dazu gehören z.B. ein Antriebsmotor, Stellungsgeber, Mikrocontroller und eine The invention relates to a power transformer with electronic components. From DE4214431 C2, a tap changer with a motor drive is known. This is arranged on the outside of the housing of a power transformer. The motor drive consists of many individual parts, including many electronic components. These include e.g. a drive motor, position transmitter, microcontroller and a
Auswerteeinheiten. Um einen sicheren Betrieb dieser elektronischen Bauelemente zu gewährleisten, benötigt jedes Bauteil eine Spannungsversorgung. Beim Motorantrieb wird die Energieversorgung über ein einziges Kabel, welches diesen mit einer in der näheren Umgebung angeordneten Spannungsquelle verbindet, realisiert. Evaluation. To ensure safe operation of these electronic components, each component requires a power supply. When motor drive, the power supply via a single cable, which connects this with a voltage source arranged in the vicinity realized.
Neben dem Motorantrieb findet man bei modernen Leistungstransformatoren zahlreiche andere elektronische Bauelementente. Darunter befinden sich zahlreiche In addition to the motor drive can be found in modern power transformers numerous other electronic device elements. Among them are numerous
Sicherheitseinrichtungen wie z.B. Buchholzrelais, Temperatursensoren, Luftentfeuchter und Gas-in-ÖI-Sensoren. Auch diese benötigen für den Betrieb eine Spannungsquelle. Diese Sicherheitseinrichtungen sind ebenfalls in der Nähe des Transformators angeordnet und über Kabel mit den Sicherheitseinrichtungen verbunden. Da beispielsweise das  Safety devices such as Buchholz relays, temperature sensors, dehumidifiers and gas-in-oil sensors. These too require a voltage source for operation. These safety devices are also located near the transformer and connected by cables to the safety devices. For example, the
Buchholzrelais im oberen Teil des Leistungstransformators angebracht ist, ist die, außen am Gehäuse verlegte, Verkabelung zu der Spannungsquelle dem entsprechend lang. Buchholz relay is mounted in the upper part of the power transformer, the, outside the housing laid, wiring to the power source is the correspondingly long.
Diese herkömmliche Art der Spannungsversorgung, nämlich über lange Kabel mit räumlich getrennten Spannungsquellen, der elektronischen Bauelemente der This conventional type of power supply, namely over long cables with spatially separated voltage sources, the electronic components of the
Leistungstransformatoren bringt zahlreiche Nachteile mit sich. Da Leistungstransformatoren oftmals mehrere Jahrzehnte im Einsatz sind, müssen auch die Kabel in dieser Zeit eine sichere Funktion gewährleisten. Da aber die Kunststoffummantelung unterschiedlichen Witterungsbedingungen (Regen, UV-Strahlung, etc.) ausgesetzt ist, kann es zu offenen Kabelstellung oder sogar Brüchen kommen. Auf Grund des verhältnismäßig niedrigen Spannungsniveaus, das die Zusatzgeräte benötigen, bedarf es einer gesonderten, nur für diese Anwendungen verlegten, Leitung. Dies ist nicht nur kostenintensiv, sondern auch mit hohem Aufwand verbunden, da sich Leistungstransformatoren oftmals in Gegenden ohne Niederspannungsversorgung befinden. Die Vielzahl der elektromischen Bauelemente erfordert besondere Fachkenntnisse bei der Installation, da es bei der Verdrahtung schnell zu Fehlern kommen kann. Die entfernt angeordneten Spannungsquellen erschweren dies zusätzlich. Trotz dieser Nachteile ist eine Spannungsversorgung der elektronischen Power transformers brings numerous disadvantages. Since power transformers are often in use for several decades, the cables must also ensure a reliable function during this time. However, since the plastic sheathing is exposed to different weather conditions (rain, UV radiation, etc.), open cable position or even fractures may occur. Due to the relatively low voltage levels required by the accessories, it requires a separate, laid only for these applications, line. This is not only costly, but also associated with high costs, since power transformers are often located in areas without low voltage supply. The variety of electronic components requires special installation expertise, as wiring can quickly lead to errors. The remotely located voltage sources complicate this additionally. Despite these disadvantages is a power supply of the electronic
Bauelemente notwendig. Components necessary.
Die Aufgabe der Erfindung ist es, die Energieversorgung der elektronischen Bauelemente eines Leistungstransformators näher anzuordnen und damit die Nachteile des Standes der Technik zu beseitigen. The object of the invention is to arrange the power supply of the electronic components of a power transformer closer and thus to eliminate the disadvantages of the prior art.
Diese Aufgabe wird durch einen Leistungstransformator mit elektronischen Bauelementen gelöst, der einen Streufeldsammler aufweist, der unmittelbar in einem Streufluss des Leistungstransformators angeordnet ist. This object is achieved by a power transformer with electronic components, which has a stray field collector, which is arranged directly in a stray flux of the power transformer.
Leistungstransformatoren sind eine spezielle Art von Transformatoren die meist in elektrischen Energienetzen eingesetzt werden. Diese können sehr groß gestaltet werden und sind in der Lage Spannungen von mehreren hundert kV umzusetzen. Sie bestehen üblicherweise aus drei ferromagnetischen Kernen, sowie mindestens zwei Leitern Power transformers are a special kind of transformers that are mostly used in electrical energy networks. These can be designed very large and are able to convert voltages of several hundred kV. They usually consist of three ferromagnetic cores, as well as at least two conductors
(Wicklungen), die um jeden der Kerne gewickelt sind. Dieser Aufbau ist unter anderem aus der DE2943626A1 sowie der US201 1/0248808 bekannt. Die Kerne sind an der oberen und unteren Seite über ein Joch miteinander verbunden und aneinander gereiht. Um jeden Kern ist zunächst ein erster Leiter gewickelt. Diesen bezeichnet man als erste Wicklung. Zwischen dem Kern und der ersten Wicklung ist ein Isoliermaterial angeordnet, um beide Teile galvanisch voneinander zu trennen. Um die erste Wicklung ist eine zweite Wicklung angeordnet. Beide Wicklungen sind ebenfalls durch ein Isoliermaterial galvanisch  (Windings) wrapped around each of the cores. This structure is known inter alia from DE 2943626A1 and US201 1/0248808. The cores are connected to each other at the top and bottom by a yoke and lined up. At first, a first conductor is wound around each core. This is called the first winding. Between the core and the first winding, an insulating material is arranged to galvanically separate the two parts. A second winding is arranged around the first winding. Both windings are also galvanic by an insulating material
voneinander getrennt. Bei einem idealen Transformator sind die Spannungen an den Wicklungen aufgrund der elektromagnetischen Induktion proportional zur separated from each other. In an ideal transformer, the voltages on the windings due to the electromagnetic induction are proportional to
Änderungsgeschwindigkeit des magnetischen Flusses und zur Windungszahl der Wicklung. Folglich verhalten sich die Spannungen so zueinander wie die Windungszahlen. Diese Aussage stimmt jedoch nur in der Theorie, da sich unterschiedlichste Einflüsse auf den Wirkungsgrad niederschlagen und diesen senken. Dazu gehören unter anderem die Rate of change of the magnetic flux and the number of turns of the winding. Consequently, the voltages behave as each other as the number of turns. However, this statement is true only in theory, since most different influences affect the efficiency and lower this. These include the
Widerstände der Wicklungen, Wirbelstromverluste, Permeabilität des Kerns sowie magnetische Streuflüsse. Resistances of the windings, eddy current losses, permeability of the core and magnetic leakage fluxes.
Um diese Einflüsse zu verringern oder zumindest zu reduzieren, werden unterschiedliche Maßnahmen getroffen. Um Wirbelstromverluste zu reduzieren, wird beispielsweise der Kern eines Leistungstransformators nicht massiv ausgebildet, sondern aus vielen aufeinander geschichteten dünnen Blechen. Streuflüsse lassen sich durch enge Anordnungen der Wicklungen zueinander, Werkstoffen mit hoher magnetischer Leitfähigkeit im Kern und besondere konstruktive Ausgestaltung der Transformatoren, reduzieren. Man schafft es jedoch nicht die Streuflüsse völlig auszublenden. Diese Streuflüsse können mittels eines Streufeldsammlers als Energieversorgung genutzt werden Anhand der nachstehenden Zeichnungen, soll beispielhaft auf die Erfindung noch näher eingegangen werden. Es zeigen In order to reduce or at least reduce these influences, different measures are taken. To reduce eddy current losses, for example, the core of a power transformer is not formed solid, but from many stacked thin sheets. Stray fluxes can be achieved by close arrangements of the windings to each other, materials with high magnetic conductivity in the core and special structural design of the transformers, reduce. One manages not to hide the leakage flux completely. These leakage fluxes can be used by means of a stray field collector as energy supply With reference to the following drawings, the invention will be discussed in more detail by way of example. Show it
Figur 1 einen aus dem Stand der Technik bekannten Leistungstransformator mit elektronischen Bauelementen 1 shows a known from the prior art power transformer with electronic components
Figur 2 einen erfindungsgemäßen Streufeldsammler,  FIG. 2 shows a stray field collector according to the invention,
Figur 3 einen erfindungsgemäßen Streufeldsammler unmittelbar an einer  Figure 3 shows a stray field collector according to the invention directly to a
Wicklungsanordnung eines Leitungstransformators,  Winding arrangement of a line transformer,
Figur 4 einen Leistungstransformator mit möglichen Stellen zum Anbringen des erfindungsgemäßen Streufeldsammlers  4 shows a power transformer with possible locations for attaching the stray field collector according to the invention
Figur 5 einen weiteren Leistungstransformator mit möglichen Stellen zum  FIG. 5 shows a further power transformer with possible locations for
Anbringen des erfindungsgemäßen Streufeldsammlers.  Attachment of the stray field collector according to the invention.
Figur 1 zeigt einen aus dem Stand der Technik bekannten Leistungstransformator 1 mit elektronischen Bauelementen. An der Außenwand 2 befindet sich u.a. ein Temperatursensor 3, Laststrommesser 4 und eine Antriebseinheit 5, die einen im Inneren angeordneten Laststufenschalter 6 antreibt. Im oberen Bereich sind ein Buchholzrelais 7 und zwei Figure 1 shows a known from the prior art power transformer 1 with electronic components. On the outer wall 2 is u.a. a temperature sensor 3, load flow meter 4 and a drive unit 5 which drives an on-load stage switch 6 disposed inside. In the upper area are a Buchholz relay 7 and two
Luftentfeuchter 8 angebracht. Der Ausschnitt 9 zeigt die sich im Inneren des Dehumidifier 8 attached. The section 9 shows the inside of the
Leistungstransformators 1 befinden Wicklungen 10 sowie ein angedeutetes Joch 1 1 das diese umschließt. Im oberen Bereich befinden sich auch Isolatoren 12, durch die der Leistungstransformator 1 mit Hochspannungsleitungen verbunden ist. Die elektronischen Bauelemente sind dabei unter einander und mit einer externen Energieversorgung verbunden. Power transformer 1 are windings 10 and an indicated yoke 1 1 enclosing them. In the upper area are also insulators 12, through which the power transformer 1 is connected to high voltage power lines. The electronic components are connected to each other and to an external power supply.
Figur 2 zeigt einen erfindungsgemäßen Streufeldsammler 12 bestehend aus einem Kern 13 und einer Spule 14. Wird der Streufeldsammler 12 in einen wechselnden magnetischen Fluss, genauer Streufluss Φ, eines Wechselstromtransformators gebracht, so wird eine Spannung in der Spule 14 induziert. Diese Spannung kann dazu verwendet werden, um unterschiedliche elektronische Bauteile, die in der Nähe eines Leistungstransformators angeordnet sind, mit Energie zu versorgen. Der Kern 13 des Streufeldsammlers 12 ist nicht zwingend erforderlich. Dieser dient lediglich der Verstärkung der Induktivität. Ist das Figure 2 shows a stray field collector 12 according to the invention consisting of a core 13 and a coil 14. If the stray field collector 12 is brought into an alternating magnetic flux, more precisely stray flux Φ, of an AC transformer, a voltage is induced in the coil 14. This voltage can be used to power different electronic components located near a power transformer. The core 13 of the stray field collector 12 is not mandatory. This serves only to increase the inductance. Is this
Streufeld Φ stark genug, bedarf es nur der Spule 14. Figur 3 zeigt eine aus der DE2943626A1 bekannte Wicklungsanordnung (Fig. 4), die aus einem Wicklungskern 15, einer ersten Wicklung 16 und einer zweiten Wicklung 17 besteht. Sowohl zwischen der ersten Wicklung 16 und dem Wicklungskem 15, als auch zwischen der ersten Wicklung 16 und der zweiten Wicklung 17, ist ein Isoliermaterial 18 angeordnet, um alle Teile galvanisch voneinander zu trennen. Beim Anlegen einer Wechselspannung an die erste Wicklung 16 wird aufgrund der elektromagnetischen Induktion ein wechselnder magnetischer Fluss im Wicklungskern 15 erzeugt. Der magnetische wechselnde Fluss induziert wiederum eine Spannung in der zweiten Wicklung 17. Der magnetische Fluss der außerhalb des Wicklungskerns 15 verläuft (Streufluss Φ) entsteht u. a. in den Stray field Φ strong enough, it requires only the coil 14th FIG. 3 shows a winding arrangement known from DE 2943626A1 (FIG. 4), which consists of a winding core 15, a first winding 16 and a second winding 17. Both between the first winding 16 and the winding core 15, as well as between the first winding 16 and the second winding 17, an insulating material 18 is arranged to galvanically separate all parts from each other. When an alternating voltage is applied to the first winding 16, an alternating magnetic flux is generated in the winding core 15 due to the electromagnetic induction. The magnetic alternating flux in turn induces a voltage in the second winding 17. The magnetic flux that runs outside of the winding core 15 (leakage flux Φ) is formed inter alia in the
gekennzeichneten Bereichen A-D und ist hier besonders groß. Durch Positionierung eines Streufeldsammlers 12 in diesen Bereichen kann der unerwünschte Streufluss Φ zur marked areas A-D and is particularly large here. By positioning a stray field collector 12 in these areas, the unwanted leakage flux Φ to
Energiegewinnung genutzt werden. Figur 4 zeigt den aus dem Stand der Technik bekannten Leistungstransformator 1 mit möglichen Positionen E.F.G für die Anbringung eines oder mehrerer Streufeldsammler 12. Energy generation can be used. FIG. 4 shows the power transformer 1 with possible positions E.F.G known from the prior art for the attachment of one or more stray field collectors 12.
Figur 5 zeigt einen weiteren Le i st u ng stra n sf o rm ato r der aus der US201 1/0248808A1 (Fig. 2) bekannt ist. Der dreiphasige Leistungstransformator 19 weist drei Wicklungsanordnungen 20 auf, die am oberen oder unteren Ende über ein Joch 21 mit einander verbunden sind. Die Bereiche H, J kennzeichnen wieder Positionen, an denen ein oder mehrere FIG. 5 shows a further linear street sensor which is known from US201 / 0248808A1 (FIG. 2). The three-phase power transformer 19 has three winding assemblies 20, which are connected at the upper or lower end via a yoke 21 with each other. The areas H, J again identify positions where one or more
Streufeldsammler 12 angeordnet werden können. Bei dieser Anordnung kann an Stelle des Kerns 13 das Joch 21 verwendet werden. Besonders vorteilhaft an der Erfindung ist die Tatsache, dass unerwünscht verloren gegangene Energie der Streufelder genutzt wird und dadurch das gesamte System einen höheren Wirkungsgrad erzielt. Die gewonnene Energie kann z.B. für Sensoren, die Stray field collector 12 can be arranged. With this arrangement, instead of the core 13, the yoke 21 can be used. Particularly advantageous in the invention is the fact that undesirable lost energy of the stray fields is used and thereby the entire system achieves a higher efficiency. The recovered energy can e.g. for sensors that
Betätigung von Halbleiterschaltern, einen Antrieb oder einfache Statusanzeigen verwendet werden. Dabei ist der Streufeldsammler 12 nicht nur im Hochspannungsbereich einsetzbar. Auch im Mittel- und Niederspannungsbereich sind Anwendungen möglich. Es bedarf nur einer Anpassung der Spule 14 des Streufeldsammlers 12. Operation of semiconductor switches, a drive or simple status displays are used. In this case, the stray field collector 12 can be used not only in the high voltage range. Applications are also possible in the medium and low voltage range. It only requires an adjustment of the coil 14 of the stray field collector 12th

Claims

Patentansprüche claims
1. Leistungstransformator mit elektronischen Bauelementen, 1. power transformer with electronic components,
dadurch gekennzeichnet,  characterized,
dass mindestens ein Streufeldsammler (12) zur Spannungsversorgung der elektronischen Bauelemente vorgesehen ist,  at least one stray field collector (12) is provided for supplying voltage to the electronic components,
dass der mindestens eine Streufeldsammler (12) jeweils einen Kern (13) aus einem ferromagnetischen Material aufweist und  that the at least one stray field collector (12) each has a core (13) made of a ferromagnetic material, and
dass um den Kern (13) eine Spule (14) angeordnet ist.  in that a coil (14) is arranged around the core (13).
2. Leistungstransformator mit elektronischen Bauelementen nach Anspruch 1 , 2. Power transformer with electronic components according to claim 1,
dadurch gekennzeichnet,  characterized,
dass der mindestens eine Streufeldsammler (12) in unmittelbarer Umgebung einer ersten Wicklung (16), einer zweiten Wicklung (17) und eines Wicklungskerns (4) oder eines Jochs (1 1 , 21 ) des Leistungstransformators angeordnet ist.  in that the at least one stray field collector (12) is arranged in the immediate vicinity of a first winding (16), a second winding (17) and a winding core (4) or a yoke (11, 21) of the power transformer.
3. Leistungstransformator mit elektronischen Bauelementen nach Anspruch 1 oder Anspruch 2, 3. A power transformer with electronic components according to claim 1 or claim 2,
dadurch gekennzeichnet,  characterized,
dass die Spule (14) um ein Joch (15, 21 ) des Leistungstransformators angeordnet ist.  in that the coil (14) is arranged around a yoke (15, 21) of the power transformer.
EP13704944.1A 2012-03-21 2013-02-18 Power transformer with electronic components Withdrawn EP2828867A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012102398.0A DE102012102398B4 (en) 2012-03-21 2012-03-21 Power transformer with electronic components
PCT/EP2013/053175 WO2013139541A1 (en) 2012-03-21 2013-02-18 Power transformer with electronic components

Publications (1)

Publication Number Publication Date
EP2828867A1 true EP2828867A1 (en) 2015-01-28

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EP13704944.1A Withdrawn EP2828867A1 (en) 2012-03-21 2013-02-18 Power transformer with electronic components

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US (1) US9218902B2 (en)
EP (1) EP2828867A1 (en)
JP (1) JP2015514308A (en)
CN (1) CN104126208A (en)
DE (1) DE102012102398B4 (en)
HK (1) HK1202976A1 (en)
WO (1) WO2013139541A1 (en)

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US10306715B2 (en) 2015-08-31 2019-05-28 Tridonic Gmbh & Co Kg Assembly with control gear for lamps
CN110581004B (en) 2018-06-08 2021-08-10 光宝电子(广州)有限公司 Power transformer and circuit board module
TWI658477B (en) * 2018-06-08 2019-05-01 大陸商光寶電子（廣州）有限公司 Power transformer and circuit board module
CN113675954A (en) * 2021-07-12 2021-11-19 上海置信智能电气有限公司 Induction electricity-taking and energy-supplying device based on transformer magnetic leakage

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DE102012102398A1 (en) 2013-09-26
DE102012102398B4 (en) 2015-01-08
US9218902B2 (en) 2015-12-22
HK1202976A1 (en) 2015-10-09
WO2013139541A1 (en) 2013-09-26
CN104126208A (en) 2014-10-29
JP2015514308A (en) 2015-05-18
US20150009001A1 (en) 2015-01-08

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