DE1407046A1 - Process for controlling magnetic amplifiers and electrical systems for carrying out the process - Google Patents

Description

sur yteu.eru.n-; from i. '. a _< _ ,; netv - rßty.rkern «liu electrical iliila.je aar ü."sübun.;_; ües 7er f Γ-iireua '

.Lier jjriinäan · - lie. ^ T the i'roble;'. zu _e r; a-.e, eiae .. üa ^ u such aa tax - .., sa 3 der iiap ^ n · --tTer & türicer. "! ieitlic ... ver ^ ö; ert, jeaoc.i iu steady ibr-ängigMt νολί aer -irübe ues o'teuorsijnals an: ·: aas, jteaersi. ^ ual erupts, wo.jei rase, a .ta ^ erau en des ^ expensive si.; aiils they uic ~ -.t immediately, sonJ .er .; only i :. their: ^. ^ eitiic ^ .en I.ittel.vort. also integrated 'on t'.eü i.agnewerBtf.rt: he should have an effect »

. '■ ei i: ar: *. E'n üeitea ^ e ^ ügt the AiieprecuVeruo ^ eran ^' ..es l..a ,, i> etveratäriiers selbrjt. LiLugere Ye-raö ^ er 'ii ^ saeiten iu uer ar ö ;; what order of one or some oekunaes let sicii -jait .xili'e of as integrating jlieaer ~> rirLen.a.en ^ .onuensRtoreu ersieleu. Verrjö Eran ^ ^ s- and Inte., RierKeiteii iifuer irößenorduung one or more Lliuuten are at Portable Äufvfau. "With metal. ^ Apierkondensatoreu jj.edocii niciit to achieve more ', yar i, uirec iterhaitunjj aes Steuerstro.ies for an I -Ia-jastträger- about beiträuiiie τοιι i-iüuten sina Laäungs men. "En requireaarlicfc, aie siel *, in safe Ka ^ assitäten from Vernüniti er iiröiie vAchL nelir store las & su.

ü-'Ui 1-robleii tfird according to the jdrfindan ;; thereby solved, uai3 as tax tension for the üaßnetsteigeri: he one! 'heraospaaiiunV; is used, 3ei inventive use of an i'nermo element as a dteuerapaanungsiiU-Slle for a magnetic amplifier in one

BAD ORIGINAL _r ...... 909805/0767 "

ele :: tri3c ... eii -iri. : '; e ar e e: ._ sic. ϊγ.1 _ .. eu: e advantages:

Jas' .λ .ruoexe; eut liei..vt n · ι-u ± Vfcel : t.? a vo ...!. he ever. j üii'fereua Ev / ire '-. e ■ his. ei; .e- _:. Solder joint. abau ^ i ^ e Giezc · - spaiiiiin ^, iii-i sic as jtor.; - rs_.a t..uu jei ^ er :, ti: en ;. Nieder— ouiasc ^ er -j.:-&'1s^:.^· ". der .ote '-. erv / ic .I ₁ Ur, -.ei ι er.-inatverstlii'jxers ur— r.ittei; ar, eimiss ".rer '-. ei Jiarin. .din Dteuer.; ieic.iric, ter omitted It jj: .7.s J ijr.ioeier-.ent er ^ eurt äie tfleic.ajr.raian.j unr da it den öte'ier vle.ia - ^ - K -fc-voia. solt ..- ve, until tie x'e ^ ipf r: vfcurdi: -. xere.:u; z-.yiscus.c be π.ϋϋτ «3 .bexleü sic -.- from, s.jiic. ea ru.t. ! .an .ua. ^. » uie. ”'änaekapaii did απ. ..ie. '! "" I-iIuii: sVi-r.i'.A "Lir j ^ aer iiöiü. -elxeii leic / t 30 oinriciie., ii:; ic. isrbei ei'oe vv. _ ^- . e * rere, .. ii.u "beu,., t-.i'i..e- .: or" --r .. '■■ ener cii !,

jjrii'iiidui :, s .eioä.i ^ vir. ^ the eii ^ e LUt bölie. ea ■ j .'-.>. ornoele: vei-fcs, χτλ i ^v ol '; e ".aei · ue _c ieilct.u"ueile.; ei..ii: ut, vo. o'Oc; P.: rsij: '-. i: l, ^ eisvisls— prices aine :: i /aciäel.j ir -. ■ 1, er ei: iea ei ^ ;. i :. eratr. ü ^ .ure..flies, arx e. '. eiit. ^ Iy .i'Jouersi / '* iic; l.:.:. I. ^: .n j <3..e net i; -t, .iilr.12 liu er? en, en. Jia s., Ei ~ oe Lü.-soelie des Juermo—

is generally el-si & i. ts, i- ^ 3-cl öi "... e L / sr ^; ~ ic- ^ slöts, siia. eiiö ^ .irTj '^ an.f koastaii- ι: .r.".' e. pari. "cur in .-,. e ^ u, an ic uL ^ aj ^ ii-.s ue ^ peratar ^ e ...... 1 Jen, üie: ... a .1;, jedcc. a .uc, v:,. eiaar: .r.ieite'_. oiei.tI ¹ ^ rO-Je we. i'-iu? ...: er .il "fc, the vou uer x> i: .- erena two oteaer ^, rü. e ;: Eü.iliijt.

From the üjutys "ϊιιγλ /; 3 / ö perc> i. _T r the 'Jnerno-L5pa.-i.aung practisoii ni oeinflujit, since it acts acf jeide Lbtsoelleu in the same ..' eise and its üjiriiluj.) With it "!"

9 0 9 8 0 5 / 076-7-

aas JG ^ Iic ':. ev · .., Ira ulaa will ..., es pd-iche ^ t vu la .: _j * uu: λϊτθ.1 · οβγ ^ ο; ₃ θ..όι :.

Iu xieiberev ., Iuubilf u uer iSrfinur.ii>'iröime: mjM-ere i' ...-. R ;; ioele ert'e i ». part., β κ e retained vrden. Birfcweäer kö ^ us *. "I; r ,. ^! ei -] e \; eils all solder joint ... * aii £ ert.üer., V -: .. lu; i., :: a eii-cr ^ eiaeiaß. "? aeu Ver ^ lelcjaslöt-» "fcelle ^ all Lötatellei- ^ eruer .Y .. · "!. λί, ^ ίύΐι one _; ;; e ^ ei: asa .-. ea "e; el— loiisieiie öri> lic. ^r ; u3ü ·; ei ,, oiü.,) t vreivs. '. aii _{: i} * e ::. eijj.ei? :; e ... Gx:, "fc v; ex * c.ei Jieaexi ie .; besc-ii-eitot; -. ia.:. ', v / eau i'ia. ·. the Jescjatt .emoHnc - .ir.ii .; ernölie :: will * ja- ka. ^ i aüier ό: c .: die TIaI ^ c 1 oar .jiii.jellötBuelle .. ') enat "ieu, au versc * ieae.-s wten. ersi ^ n · Ie acf sie: eiiiY / ir're ·,; 3 "let unc such a r" s .Itiere; i (te, το. · ;; ie> .rereii üröJe :! eb_ifin;, i, 5e T gipa ^ '/ uu .- ^ a er ..' .. Ite-i,

j, i o ', he voriia.> weifäe

ü.ier eino i) ror.f> eis pale, uie, i- «ia: ... sicii -e.": a; iter, eir. * e, aas jjif- treiien. voi 'JeOii-'ielsvrbmeu i : .i 3teaer:, ireiß ver.-inciert, to the control as: lun ·; aes Ha-gnet amplifier aa.; eac lo: seia. 'Iu ■ ia & 2.ciier_ cases ifj-fc ea a "-. cu! -' -. / sc ^ aar ...!.;, ai?.: röelle ..ei- ", ro.: sel ouer.; as it: jlic; i. zu {.er .Jro. ^ i3el an ojuro. se .en, if necessary. 3s recommends siciij. sar Yerne-rfe.iK; · von un-ei-BPißscuöen υ ergangswiuerständea eat. »er.i voä ^ ilieriuoeleiaeut fed control circle aassclilieiS - borrowed Lot- or ociiweiJiverbinäan?; ec ^ a use.

The old age, \ es' iheriEoelerients una uar-: itVi-a, r; ELet amplifier iii Dependence on the St e α er si ^ EaI depends on äer ¥ är; -. elcapa-.3ity of the Solder joints of the x'iieriaoele.ients and cteii IliiiilaBgrjhabeniiiasea. at "öieser: L-öosöellen ab. £> abei is the: iäri: ie; -; a.pa; iity in the first place responsible for the response, the cooling

909805/0767

Relationships primarily determine the decay behavior of the arrangement. In a further embodiment of the subject matter of the invention the heat capacity of the thermocouple is made adjustable, e.g. through the possibility of using the thermocouple in a thermally conductive Connected masses, such as the thermocouple contacting blocks of solid material or those surrounding the thermocouple Liquids, change. At the same time the cooling conditions of the thermocouple are made adjustable, e.g. by the possibility of the heat dissipation conditions (coolant - "current, cross-section or nature of a heat-dissipating Body) and / or to change the heat radiation conditions.

-These types with a defined response and decay delay provided. Magnetic amplifiers controlled by a thermocouple can be used for Hegel tasks where the following applies to control time programs. to form time averages, To store or integrate pulses, etc. simply by the decay behavior of one with a large. ¥ equipped with poor capacity and well protected against heat dissipation Eegel soldering point of a thermocouple magnetic veretarker arrangement can be controlled over hours or days. The subject matter of the invention can also be used particularly advantageously in high-voltage rectifier systems for electrostatic precipitators where one invents duly used the thermocouple as an integrator for flashovers. Here, for example, the comparison soldering point of the Thermocouple from the mains voltage or another pre- adjustable constant voltage for opening the magnetic amplifier

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heated up. When this constant voltage is applied, the l'eiaperatur the comparison solder joint first quickly, then always

slower to a limit. To the same extent becomes a Thermal voltage is generated which the control winding of the operating data the system regulating magnetic amplifier with a control supplied with electricity and thus the automatic charging of the voltage or »the amperage of the filter causes. The Hegel solder joint remains at a constant temperature for the time being, preferably

,will;
the ambient temperature, uria \ / in a further development of the invention only in the event of sudden changes in current or voltage or if the consumer resistance drops sharply, ie in the case of filter flashovers and arcs or other short circuits to block the magnetic amplifier, heated, in dent measure, such as uie If the Hegel solder joint is heated, the temperature difference between the comparison solder joint and the Eegellötatelle is reduced, i.e. the thermal voltage and thus the control amperage for the magnetic amplifier regulating the operating data of the system decreases, whereby the operating voltage or current intensity is reduced. The system regulates itself automatically to a voltage baw »current strength at which a certain number of flashovers per minute occurs in the filter. This is the desired operating state of an electric filter in which, in order to achieve an optimal degree of separation, the voltage and current should always be as high as possible, ie as close as possible to the constantly changing flashover limit.

The Begellötatelle can expediently be heated with a heating resistor when there are sudden changes in the operating amperage

9 0 9 8 0 δ / 0 7 87 BAQ ORiGlNAl.

or the operating voltage, as it occurs in the event of flashovers, is traversed by a current derived from this change. Here, parallel to the heating resistor, there is a discharge equal to switched rectifier, which has the effect that the heating resistor is only activated when the operating current is increased or when the operating voltage is reduced is flowed through by current, on the other hand, it is short-circuited for changes in the operating quantities with reversed precedence; because when a flashover occurs, i.e. when the operating current increases and the operating voltage decreases at the same time, a Action on the heating resistor take place, but not when the flashover breaks off when the operating current drops again and the operating stress increases again. j) the heating resistance only if there is a change, the operating data is heated up, ka; m as a result can be achieved that it is connected as a charging resistor in front of an operating value capacitor, which is connected via a current., andler and a charging equalizer is charged to a voltage corresponding to the operating current. The charging rectifier will ZYireckmäSigerweise trained as a bridging linkage and with a smoothing capacitor with a resistor connected in parallel provided, whereby.uer resistance at the same time to implement the Operating amperage iu a corresponding Spaxinun "· and in connection with the discharge rectifier for discharging ctes operational value capacitor in the event of a drop in operation and current strength. So long the operating current strength sicii does not change, the operating value capacitor remains at constant voltage, the heating resistor is de-energized. However, if the current suddenly increases, it flows the charging current, welc.er the operating value capacitor to the now charges correspondingly higher voltage, via the Iieizverbindungen.

909805/0787 BADOTOiNAL ₇

If the operating current decreases again, the operating value capacitor discharges via the discharge device and the άβ ', Ώ. Smoothing capacitor, resistor connected in parallel, whereby the Heiziri ..1er stood again remains de-energized. The operating value capacitor follows the operating value capacitor slowly when it approaches the operating current, without any significant heating output being converted in the measuring resistor. The heating element described in this way for the gel soldering point of the thermocouple is used, regardless of the magnitude of the current strength, to convert short-term current increases or flashovers, also referred to as li'isciier, in the regular soldering point into corresponding heat impulses «

In further training of the founding, the solder joint will be included equipped with a second heating resistor, which only then heats up if arcs or long lasting flashovers occur. This second Heizwidei "stand is made by an ai slow-working Reinforcement element, preferably a Magaet "amplifier regulated, which is controlled by the operating data of the system, in such a way that only when a certain value is exceeded that can be set Minimum — operating amperage and simultaneous signing a certain adjustable minimum — operating voltage a heating— Amperage reads, This arrangement can be adjusted so that each flashover Tjzw. Arc independent of the operating data is reported; because in the event of an electric arc, the J filter voltage breaks and thus the operating voltage down to the short-circuit value together, where the short-circuit amperage was * “So if you a lie. member creates that only responds if both one

909805/0767 _BADO fflGiNAl-

Amperage flows when aucli the voltage collapsed then you can be sure of every rollover. All The other operating states differ from this, e.g. iliess , when the system is blocked, so if the operating voltage is also is low, practically no operating current, while in normal operation an operating current flows, but the operating voltage is far above the iüirzsehlußwert.

i) the arrangement for achieving the desired crucible behavior is made so that the second heat resistance over a voltage-controlling magnetic amplifier to an auxiliary voltage is connected, the magnetic amplifier usually via a control winding through which constant Vorstroin flows is blocked. It has two further control windings, one of which is from an ai direct current derived from the operating voltage in the blocking Sense through which a direct current derived from the operating current intensity flows through the other in an opening sense. Through a- potentiometer, the influence of the various sizes on the voltage-controlling magnetic amplifier can be regulated.

Ä) the second heating resistor for the regular soldering point, which, as described above; practice, is only heated up if prolonged flashovers and arcing take place in the filter, as its current strength or Voltage regulated by a slow working gain element can also be switched in such a way that the operating current intensity or a current intensity derived therefrom flows through it directly and that parallel to the second heating resistor there is a magnetic amplifier with a response delay, which is controlled by the operating voltage and short-circuits the heating resistor when the operating

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voltage has a certain adjustable minimum value, which is in the The range above the short-circuit voltage of the system is exceeded. Aach this circuit arrangement causes the Heat resistance is heated up with every long-lasting arc will. However, while in the first described! "All the heating impulse mainly depends on the duration of the arc and its current intensity is practically independent of the operating data of the system is, since the heating voltage is not derived from the operating data, corresponds to the heating current strength in the last case described directly the arc current strength. It depends on the behavior of the slektrofilter, which of the two options described the preference is to be given

As mentioned, the second Jlegel soldering point is only used for long lasting flashovers or arcs. The thermocouple works to extinguish the arc immediately too sluggish * In the event of a permanent flashover, it would be deleted by 2? Reduction of the voltage or current intensity across the thermocouple elapses an undesirably long time, during which the Regular soldering point would be heated up "that there is a risk of over-regulation and thus the pendulum of the system would arise. Around. this Avoiding undesirable effects can be achieved in advanced training of the invention on the second heating resistor for the Hegellöt— ■ voltage or the current flowing through it at the same time directly to the one controlled by the thermocouple Magnetic amplifier in the sense of a blocking, i.e. in the sense of an immediate reduction of the filter voltage or current strength will. In this way, the arc is extinguished after a short time. After the arc breaks, the second

909805/0787 _ ₁₀

Heating resistance of the sail soldering point without voltage or current, so also, the corresponding control winding of the one controlled by the thermocouple Magnetic amplifier and the system returns to the state caused by the temperature difference between the two solder joints given is.

Basing the whole arrangement can be al by. Yiahl and circuit of the magnetic amplifier and in particular can be largely influenced by the coupling conditions of the magnetic amplifiers. However, it is particularly important the ability to influence the sailing behavior by interfering with the thermocouple.

Quake the already described possibilities for setting the heat capacity and the cooling conditions of the soldering points of the The third option for thermocouples is that of the number of Heating means. For example, it may be desirable for a given heating voltage to be non-constant over time, for example over time to supply increasing heating power. This is particularly desirable at the comparison solder point so that when the system is switched on, the at first, rapid upward regulation of the tension is somewhat slowed down and towards the end of the gelling process when the temperature the comparison solder joint tends towards its limit value, is accelerated somewhat. This is achieved according to the invention by connecting a NTC thermistor in front of the reference soldering point or by placing the reference soldering point trains itself as an NTC thermistor. Similar possibilities exist with the icing resistors for the Eegellötstelle There, too, it may be desirable to use non-linear resistances,

909805/0767

For example, thermistors, to switch in front of the hot resistors or but to train the thermal resistances themselves as non-linear resistances.

The figure shows a fully automatic high-voltage rectifier system for electrostatic precipitators as an exemplary embodiment of the invention. A current-controlling parallel transducer 1 in an economy circuit is connected to the network, which feeds the electrostatic filter 4 via the high-voltage rectifier. The transducer 1 serves as an actuator of the system, Sr is controlled via the rectifier transformer 5, which in turn is controlled by the voltage-controlling magnetic amplifier 6. Before the system is switched on, ie before the main switch 7 is actuated, a control current flows through the right control winding of the magnet amplifier 6, which is connected to the network via the auxiliary transformer S, the rectifier 9 and the variable resistor 10, which controls the magnet amplifier 6 blocks. When the system is switched on with the main switch 7, the main transducer 1 is blocked because the magnetic amplifier 6 is blocked, the rectifier transformer or § does not receive any voltage and thus the transductor 1 is without control current. By turning on the main switch 7, however, the supply line to .dem--. Heating resistor 11 of the comparison soldering point 12 of the thermocouple, which is connected to the central control winding of the magnetic amplifier 6 via the electrical coil 13, is closed. 2) the resistor 11 gradually heats the reference soldering point 12, while the Eegellötstelle 14 remains cold for the time being. The temperature difference between the two soldering points increases slowly and thus also increases, the thermal voltage and thus also the mean control *

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ixlaiiij; of the M & gnet amplifier ό dureliflying control current, Jieser control current. This opens the magnetic amplifier 6 slowly, the Grleicärichtertransforinator 5 opens the voltage and the Eaapttransduktorjuvira, whereby the operating current increases slowly The heating current strength for the resistor can be set so that this ^: Equal weight biperator corresponds to the nominal current strength of the high voltage system - current is reached "lim to beeiaflussen the zeitlielien end of this Eeraafregeins, heat capacity and Kiihiungsverliältnisse the Vergleiciis ~ can be solder joint else changed in 12, not shown, T / ier in already geaehiläfcrten way * Außerdeia is Beihe to the heating resistor 11 the thermistor 16 * switched the i'eaperatarincrease of the heating resistance 11 "

and thus> tTer EegellStstelle 12 zanäciist slowed down, then be— " accelerates, i.e. in the sense of a linearization of the i rise sri

If the nominal current is reached _i without flashovers occurring beforehand, the control is finished and the system runs in the steady state with the nominal current and at a voltage which is calculated from this nominal current and the filter resistance according to Ohm's law.In most cases However, flashovers occur in the electrostatic precipitator 4 aaf before the nominal streak strength is reached. Then the current strength and the voltage should not be increased any further and if they occur too frequently

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- 13 -

This excess stroke Werdes even lowered again and derairfe that a certain average number τοπ overs per unit of time takes place * 3EI-.i occurrence Kurser flashovers (wiper) _t which is generally not the cooperation of the voltage broke lead and tear off again automatically., the comparison solder joint 14 is heated by the heating resistor 17. As a result, the temperature difference between the. both soldering points of the thermocouple from _r the steamer current strength of the central control winding of the magnetic amplifier 6 decreases, _s the operating current strength of the system goes back somewhat:.

the

Amperage of current flowing through it consists mainly of the operating value capacitor IS, which is charged via the rectifier 19 or the current transformer 20 to a voltage which, according to Ohm's law, is the current intensity supplied by the current transformer 2 and the value of the circuit arrangement causing this leveling behavior Resistance 21 calculated. The charging of the operating capacitor 18 takes place via the heating resistor 17. As long as the operating current does not change, no current flows through the heating resistor 17 because the voltage across the resistor 21 remains constant. If the operating strain increases slowly, for example after switching on the main switch? is the case with the upward regulation, the amount of charge flowing through the resistor 17 for charging the operating value capacitor 18 per unit of time is so small that significant heating does not take place. When flashovers occur, however, the current suddenly rises sharply,

909805/0767 " ¹⁴ ~

whereby the voltage across resistor 21 increases. Accordingly, the operation value capacitor 18 via a & n is ueizwiderstand recharged 17, wherein the full flowing to the Betrlebswertko & ensator IS energy converted into heat in lieiswiäerstand 17 «When tearing off the ilberschlags- or the operating auruckgelien current passes the voltage as: resistor 21 back and The operating value capacitor 18 discharges via the discharge rectifier 22 and the resistor 21 until it has reached this voltage. Here flows through the core resistance 1? No current, the discharging device 22 accelerating the discharge of the operating capacitor 18 is required above all if the system is to be operated with large excess frequencies * The capacitor 2jj is only used for smoothing.

A second heating resistor 24 for the gel soldering point 14 is heated up in the event of permanent flashover. Continuous flashovers are not detected by the heating resistor 17 because the operating current strength no longer changes in the event of a permanent flashover, so the operating value capacitor 18 remains at a constant voltage and therefore the electrical resistance 17 is de-energized. The die resistance 24, on the other hand, is connected to a voltage via a voltage-controlling magnetic amplifier 25 which responds with a delay in such a way that it is heated up during the entire duration of a long flashover. The magnetic amplifier 25 is normally, that is, when no flashover occurs, blocked by the left auxiliary winding. This blocking is counteracted by the variable resistor 26 adjustable n ) auxiliary winding, which is connected via a variable resistor 27 parallel to the resistor 21 and thus receives a voltage,

9 0 9805/0767 ™ ™ «--- - ¹ ^ -

proportional to the operating current, the control winding * of the magnet amplifier 25 is connected to the operating voltage via a control unit 2S and a rectifier 29 and also has a blocking effect. The magnetic amplifier 25 opens only when if the additional blocking caused by the operating spam is no longer available, i.e. if the operating voltage is interrupted during the arc, and if the arc current strength counteracts the blocking preset at the resistor 26. The heating resistor 24 is therefore good in the case of long-lasting electric arcs leading to voltage zasanuseuse to heat up the Eegellötstelle 14, i) ie on: Electricity resistor 24 during the arc voltage can be used at the same time to extinguish the arc immediately Sense bad "a rectifier 2S and a variable resistor 29 is applied to the left control winding of the ^ agnet amplifier 6. When an arc occurs, the system locks itself immediately and, when the arc is extinguished, opens again, but does not quite reach the old operating values because the heating resistor 24 has heated up the soldering point 14 by a small amount.

""'"""■""'"'"" * 90 9805/076 7

BATH ORIGINAL

Claims (1)

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