DE440793C - Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are phase shifted - Google Patents

Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are phase shifted

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Publication number
DE440793C
DE440793C DEA38626D DEA0038626D DE440793C DE 440793 C DE440793 C DE 440793C DE A38626 D DEA38626 D DE A38626D DE A0038626 D DEA0038626 D DE A0038626D DE 440793 C DE440793 C DE 440793C
Authority
DE
Germany
Prior art keywords
phase
transformer
fluxes
magnet systems
shifted
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.)
Expired
Application number
DEA38626D
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German (de)
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Priority to DEA38626D priority Critical patent/DE440793C/en
Application granted granted Critical
Publication of DE440793C publication Critical patent/DE440793C/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented

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

Description

Mehrphasentransformator mit zwei mehrphasigen Magnetsystemen, deren Flüsse in der Phase gegeneinander verschoben sind. Zur Umformung von Dreiphasen- in Zwölfphasenstrom verwendet man vielfach -neben anderen Anordnungen - zwei Dreiphasentransformatoren, wobei die Primärwicklung des einen in Stern, die des andern in Dreieck geschaltet ist. Jeder dieser Dreiphasentransformatoren hat ein dreiphasiges Magnetsystem, auf welchem eine sechsphasige Wicklung angebracht werden kann. Durch die Stern-Dreieckschaltung der Primärwicklungen wird erreicht, daß die Flüsse der beiden dreiphasigen Magnetsysteme und ebenso auch die von ihnen induzierten Spannungen nicht phasengleich, sondern um 30° elektrisch gegeneinander verschoben sind. Die beiden Sechsphasensysteme ergeben also zusammen ein Zwölfphasensystem mit 3o° Phasenwinkel zwischen je zwei benachbarten Phasen.Multi-phase transformer with two multi-phase magnet systems, whose Rivers in the phase are shifted against each other. For forming three-phase in twelve-phase electricity, two three-phase transformers are often used in addition to other arrangements, The primary winding of one is connected in star, that of the other in delta is. Each of these three-phase transformers has a three-phase magnet system which a six-phase winding can be attached. Through the star-delta connection of the primary windings is achieved that the fluxes of the two three-phase magnet systems and also the voltages they induce not in phase, but rather are electrically shifted from one another by 30 °. The two six-phase systems result so together a twelve-phase system with a phase angle of 30 ° between two adjacent phases each.

Die Erfindung soll es ermöglichen, an Stelle der beiden Transformatoren nur einen zu verwenden, und zwar dadurch, daß die beiden Transformatoren so zusammengebaut werden, daß ihre in Kerntransformatorform angeordneten Magnetsysteme ein, gemeinsames Joch erhalten, in welchem sich zwei verschiedenphasige Felder überlagern. Dadurch wird nicht nur ein Joch gespart, sondern es kann auch das gemeinsame Joch bedeutend schwächer gehalten werden als jedes der beiden einzelnen Joche, wie aus dem Folgenden hervorgeht.The invention is intended to make it possible to replace the two transformers to use only one by having the two transformers so assembled that their magnet systems arranged in the form of a core transformer are a common one Get a yoke in which two different-phase fields are superimposed. Through this Not only is one yoke saved, but the common yoke can also be significant be held weaker than either of the two individual yokes, as from the following emerges.

In Abb. i ist der Aufbau des Eisens für einen nach der Erfindung ausgeführten Transformator dargestellt. Mit ra sind die Säulen des ersten Magnetsystems bezeichnet, mit b die Säulen des zweiten Magnetsystems, mit c das obere Joch des ersten, mit d. das untere Joch des zweiten Magnetsystems und mit e das gemeinsame Joch der beiden Magnetsysteme, In den drei Säulen des oberen Magnetsystems fließen die drei KraftflÜsse f1, cDa, c'" die in Abb. 2 im Vektordiagramm dargestellt sind. In den drei Säulen des unteren Magnetsystems fließen die drei Kraftflüsse f4, CD6, e6, die' ebenfalls in Abb. 2 im Vektordiagramm dargestellt sind, und deren Richtungen gegen die der drei Kraftflüsse des oberen Magnetsystems um 3o° im Vektordiagramm verschoben sind. Nun folgt aus Abb. i, daß im oberen und unteren. Joch dieselben Kraftflüsse fließen wie in den äußern Schenkeln, im mittleren Joch dagegen die Kraftflüsse cP4-cD1 und cbe-cD3, und aus dem Vektordiagramm (Abb. 2) folgt, daß die Flüsse e,7 chl und bs cD, nur ungefähr halb so groß sind wie die' Flüsse cD, bis cbs. Das mittlere gemeinsame Joch braucht also nur den halben Querschnitt zu erhalten wie jedes der äußeren Joche.In Fig. I is the structure of the iron for one made according to the invention Transformer shown. The columns of the first magnet system are denoted by ra, with b the columns of the second magnet system, with c the upper yoke of the first, with d. the lower yoke of the second magnet system and with e the common yoke of the two Magnet systems, In the three pillars of the upper magnet system, the three forces flow f1, cDa, c '"which are shown in the vector diagram in Fig. 2. In the three columns of the lower magnet system, the three power flows f4, CD6, e6, die 'also flow are shown in Fig. 2 in the vector diagram, and their directions against those of the three force flows of the upper magnet system are shifted by 30 ° in the vector diagram. It now follows from Fig. I that in the upper and lower. Yoke the same power flows flow as in the outer thighs, but in the middle yoke the power flows cP4-cD1 and cbe-cD3, and from the vector diagram (Fig. 2) it follows that the flows e, 7 chl and bs cD, are only about half the size of the 'rivers cD, to cbs. The middle common The yoke therefore only needs to have half the cross-section as each of the outer yokes.

In der Konstruktion und Schaltung eines solchen Transformators sind im einzelnen noch manche Abänderungen möglich. Z. B. können die Primärwicklungen der beiden Magnetsysteme parallel oder in Serie geschaltet werden. Die Sekundärwicklungen können zu Dreiphasen-, Sechsphasen- oder Zwölfphasensystemen zusammengefaßt werden. Die Leistung der beiden Teile des Transformators kann ferner verschieden sein, wodurch verschieden große Eisenquerschnitte bedingt sein können. Schließlich kann die Erfindung ebenso wie für die Umformung von Dreiphasenstrom in Zwölfphasenstrom auch für andere mehrphasige Anordnungen Verwendung finden. Es kann z. B. primär Zweiphasenstrom zur Verfügung stehen und sekundär Acht- oder Mehrphäsenstrom entnommen werden.In the design and circuit of such a transformer are some changes are still possible in detail. For example, the primary windings of the two magnet systems can be connected in parallel or in series. The secondary windings can be combined into three-phase, six-phase or twelve-phase systems. The performance of the two parts of the transformer can also be different, whereby different sized iron cross-sections can be conditional. Finally, the invention as well as for the conversion of three-phase electricity into twelve-phase electricity for others Find multi-phase arrangements use. It can e.g. B. primarily two-phase electricity are available and secondary eight-phase or multi-phase electricity can be drawn off.

Claims (1)

PATrV TANSPRLTC$: Mehrphasentransformator mit zwei mehrphasigen Magnetsystemen, deren Flüsse in der Phase gegeneinander verschoben sind, dadurch gekennzeichnet, daß diese beiden in Kerntransformatorform angeordneten Magnetsysteme ein gemeinsames Joch haben, in welchem sich zwei verschiedenphasige Felder überlagern. PATrV TANSPRLTC $: Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are shifted in phase with respect to one another, characterized in that these two magnet systems arranged in the form of a core transformer have a common yoke in which two different-phase fields are superimposed.
DEA38626D 1922-10-06 1922-10-06 Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are phase shifted Expired DE440793C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA38626D DE440793C (en) 1922-10-06 1922-10-06 Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are phase shifted

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA38626D DE440793C (en) 1922-10-06 1922-10-06 Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are phase shifted

Publications (1)

Publication Number Publication Date
DE440793C true DE440793C (en) 1927-02-15

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ID=6930904

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA38626D Expired DE440793C (en) 1922-10-06 1922-10-06 Multi-phase transformer with two multi-phase magnet systems, the fluxes of which are phase shifted

Country Status (1)

Country Link
DE (1) DE440793C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767485C (en) * 1932-12-11 1952-09-08 Siemens Schuckertwerke A G Choke coil arrangement, in particular for voltage regulation of AC power lines
DE764332C (en) * 1935-08-16 1954-09-27 Siemens Schuckertwerke A G Arrangement to suppress the harmonics, preferably the fifth and seventh, in the current or in the voltage of saturated three-phase choke coils or transformers
FR2506064A1 (en) * 1981-05-18 1982-11-19 Westinghouse Electric Corp Core arrangement for multiple winding compound transformer - has common yoke section allowing flux to be diverted through secondary cores by controlling the current in series windings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767485C (en) * 1932-12-11 1952-09-08 Siemens Schuckertwerke A G Choke coil arrangement, in particular for voltage regulation of AC power lines
DE764332C (en) * 1935-08-16 1954-09-27 Siemens Schuckertwerke A G Arrangement to suppress the harmonics, preferably the fifth and seventh, in the current or in the voltage of saturated three-phase choke coils or transformers
FR2506064A1 (en) * 1981-05-18 1982-11-19 Westinghouse Electric Corp Core arrangement for multiple winding compound transformer - has common yoke section allowing flux to be diverted through secondary cores by controlling the current in series windings

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