DE1736678U - POWER CONVERTER SYSTEM WITH ANODE REACTORS. - Google Patents

Description

BBC Mannheim * the ll.lTuni

BROWN, BOVERI & CiI

Corporation

MANNHEIM

»Converter system, with

In the case of multi-phase converters, in particular, "at low It takes courage to improve control of the low power factor the so-called; 3 & asen sequencing applied> both? the esa fieklungg & tr & ngeii same% annung tmd piiaseäiläge lying not equivocal, goEdeieÄ u & te # ssyslieifeea? Tertauseliimg old divorceeai ¥ erj3 ^ $ ea? ung confessions ·! weMen. In the case of a 0ö3u? Hold on to the Stroia ^ ieter in view of the Dei iedem The currents occurring in the event of a disturbance are different from " more symmetrical

As is well known, each commutation works for a short period of time two different phases of their tensions Equilateral anodes »© You should order these anodes with an eye During this time there are briefly two cases

is in msentXiöhen "isedingt by the between

Μχ $ & β & underneath the dining frimärnet2 lying st ^ euimpedan ^ · Sini now »as is & usual» the special windings can be driven with biasing control. Return * ^ phasena isteme in öinem gömöinsamen fransformator arranged so hot is the gehräuehliche "Wicklungeanordniingen the 4's for Eurg * iöohlussttrom mass continuous total stray impedance naheau unaohangig it," $ u $ simultaneously & m $ third Corresponding weighting parts of the two higher-phaoensyotems kuragegtehio ^ sen ßindjr or whether only two fieklunga strands of one of these. Systems are in the »

In the first case, however, see the Zurasohlusstrom distributed over two Kura © ohlUöS0tromkrei © e , while e? in the second case only one EurÄöohlusstromkreis Kon2ientrier.t * which is correspondingly higher stressed *

Ber the first of the genaaatiitea 5 ¹ EHq occurs * when the through the; both winding eöyöteme fed Stromrichteranoaen symmetrically controlled

m 2. ■ · * ·

BC letterhead VIII 3472 (955.5000 / AN)
1

while the wide Pall sick "with a" phase sequence control results, since sie, with this only two anodes of a system are simultaneously in the short circuit ".

The high end-of-line current free phase flow control can be inadmissible or a? At least undesired load conditions of the stream riot seranodes result in what can be expected of the retardation periods.

Of course, you can use the anodes to stress the strain in fcekarurfceT Weiee diireii limit the containment of anode fossils ". * tlelfaön Bollen aTsei? Stä? OmrieliteTanlage33. üsalilweise with synrnetiiscnei? Control or with phase sequence control are · With symmetrical control, the an unreasonable amount of money for loan savings

A proper elimination of the difficulties mentioned would be this makes it possible to generate each of the two secondary ones Mehrphasenetromsinteme provides a "special transformer" line Such a solution does not come in practical for price reasons ! Days *

After the renewal, this will be avoided in the case of Stromriöhter systems with a common ffiransformer with awei secondary Mehrphaseiiwiokitingen and connected converter anodes »the optionally with Ehasento control or éametric control he * are driven »anode chokes with ^ e ^ four windings provided, the 00 in the connecting lines between Sransformatorwioklungen and the Stromriöhter anodes are switched on »that they are disconnected from the currents two in phase a? Weighting strands of the two multiphase systems against ^ are flowed through

An example of the firing is shown in the drawing darges / barks.

In the » 3""·

The two three-phase secondary windings kept in power 1 and 2 of a transformer; * whose primary winding is not shown is »feed the anodes 6, T, 8» or: w., 9, 10, 11 of a Stromrichter®

The anodes know - as shown * they can be arranged in a "special vessel or even several % m * all in a common vessel"

The star points of the two coupling systems are connected in the usual way via a suction throttle pipe 3 , the center of which is led to the external oil 13 of the converter, while the cathodes form the positive pole 12.

The critter of the Jüaoden β, T, 8 are with a Bteu.er0inriGhtim.g Ί4 connected »The ®itteji of the anodes 9> 10 »11 are guided via a switch 16» through the el * optionally with the same control device 14 or connected to a second control device 15 Minnen * The two control units bewirls-ensaidGss in the one shown Position of; Bioswitch; 16 an uns3rmmetric control, i.e. one Phase sequence control of the gtromriehters § · If the switch 16 is close turned left, 00 all grids are connected to the control device 14 and are controlled symmetrically by these »

2which are the Aodes and the secondary transformer windings the anode chokes 4, each with separate loops, correspond to the increase 4a and 4b held * As you can see, these windings are held by the currents 3 © of two in-phase weighing strands flow in opposite directions

Does the Stromriöhttr work with the drawn position of the switch 16 with phase sequencing, an anode generally commutates just then "when the" wide anode, which is coupled to the first through the anode choke in question, does not change its current * Due to the change in current associated with the commutation, it becomes aether a voltage induces in the choke which changes the current counteracts and thereby the current in the during commutation short-circuited circuit limited

• 4 -

If, however, the StroKiriehter after Üjalegen the switch controlled ayinmetriaöh 16 * Change 00 see the streams of the same to phase * Wieklungsgtränge sngesehlösgönön anodes gleiöhiaeitig and gleichmäsöig * In AnOdendrosselft arises as a result of entgegengeeetaten Y cklungsainnes of the two windings 4 and 4b in dieäeia cases no: ^s troubled, so that the currents of the

Cj

The anodeji is not connected to earth and the voltage drop of the

is not other than whom. the anode chokes would not be present.

The known SiOH Anödendrosöeln Jait two counter stromdurchfloösenen licklungen thus result in this connexion a beneficial effect _r the soleher in the previous application chokes "when they only aur achieve a uniform Stromverteilmig on paralleIgeschaltete anodes served * nioht in question came." but is completely new.

The arrangement after the fire does not correspond to that described Example tied * but can be in the appropriate Tfeise on all known Stromriöhtersohaltungen with phase sequence ^ apply control *

Claims (1)

with a common Sranaformator with two secondary Hehrpla ^ ejawisseitaigem and attached to it Sti? Omrioii -}; e ^ aö.O (l0a, the walilüeise with bias sequence control or symmetrisöiiesr control feeiiiieisea -w ^^ deii köimeÄ * gö- * kenjizeiolme-fe durok iiiodejidajosseispulen (4) with two fici? - ltmgen (4a and 41b) so connect in the iferMn & wga lines iEr ^ nsfoaJmatorwieklungen and the Strom ^ icnteianoden What are retained are · * that ait ^ oä the currents of two equals ^ iclclwngeötränge dea? two heat systems Cl and 2) opposite directional flow