EP0111794B1 - Einrichtung zur Spannungsversorgung eines Elektrofilters - Google Patents

Einrichtung zur Spannungsversorgung eines Elektrofilters Download PDF

Info

Publication number
EP0111794B1
EP0111794B1 EP83112096A EP83112096A EP0111794B1 EP 0111794 B1 EP0111794 B1 EP 0111794B1 EP 83112096 A EP83112096 A EP 83112096A EP 83112096 A EP83112096 A EP 83112096A EP 0111794 B1 EP0111794 B1 EP 0111794B1
Authority
EP
European Patent Office
Prior art keywords
voltage
thyristor
filter
pulse
time
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
EP83112096A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0111794A1 (de
Inventor
Franz Neulinger
Gerhard Dönig
Helmut Schummer
Walter Schmidt
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.)
GEA Group AG
Siemens AG
Original Assignee
Metallgesellschaft AG
Siemens AG
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 Metallgesellschaft AG, Siemens AG filed Critical Metallgesellschaft AG
Priority to AT83112096T priority Critical patent/ATE18514T1/de
Publication of EP0111794A1 publication Critical patent/EP0111794A1/de
Application granted granted Critical
Publication of EP0111794B1 publication Critical patent/EP0111794B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/68—Control systems therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/903—Precipitators

Definitions

  • the invention relates to a device according to the preamble of the main claim.
  • electrostatic precipitators are operated today with high DC voltage, which is generated by rectification from an AC voltage network (see e.g. Siemens magazine 1971, number 9, pp. 567-572). It is known to superimpose further voltage pulses on this dc voltage, which can be regulated as a function of filter short circuits (cf., for example, DE-OS No. 2608436 or 3027172).
  • pulse voltage sources for supplying the pulse voltage are already known, in which an antiparallel connection of thyristor and diode is connected to a direct voltage source.
  • the thyristor is fired, the resonant circuit formed by the separator in connection with the pulse voltage source is triggered each time (see, for example, DE-OS No. 2608436).
  • the flashover usually occurs at the maximum or shortly after the maximum of the filter voltage, i. H. in the time period in which the diode carries the pulse current. Due to the short circuit, the vibration breaks off immediately. H. the diode locks. This means that the full voltage is immediately back on the anti-parallel connected thyristor. Is the time between quenching the thyristor through the zero crossing of the current and acceptance of the current through the diode very short, d. H. less than the free time of the thyristor, the thyristor can ignite due to the recurring voltage even without an ignition pulse. Since this ignition takes place relatively slowly, the thyristor is subjected to a very high thermal load during this time and may be destroyed.
  • the object of the present invention is to ensure in a device of the type mentioned at the outset that in the event of a breakdown or short circuit in the electrostatic filter, the thyristor or, if appropriate, a series and / or parallel connection. is not damaged by thyristors.
  • This object is achieved in accordance with the characterizing features of the main claim. In this way, the power loss occurring in the thyristor is limited.
  • An electrostatic filter 5 is fed in a manner known per se from a high-voltage rectifier device 6 which is connected to the network RS.
  • a control device 7 is provided which is not the subject of the invention and is described, for example, in more detail in the abovementioned literature reference "Siemens Journal".
  • a pulse voltage source which consists of the rectifier 1 fed from a three-phase network RST with optionally controllable semiconductor valves 11, a parallel supporting capacitor 12, a circuit arrangement 2 with anti-parallel connected thyristor 22 and diode 21 and a pulse transformer 3 with primary winding 31 and secondary winding 32.
  • the pulse voltage Up which can be removed from the secondary winding 32, is fed to the electrostatic filter 5 via a coupling capacitor 4 and is connected to the filter 5 together with the direct voltage U gl coming from the high-voltage rectifier device.
  • the thyristor 22 is assigned an ignition circuit 23, which is periodically spaced, for. B. at a periodic interval Tp of 2 ms, delivers ignition pulses to the thyristor 22.
  • the series resonant circuit consisting of the pulse voltage source, ie the components 12, 31, 32, coupling capacitor 4 and electrostatic filter 5, is triggered.
  • the primary current denoted by i in FIG. 3 flows through the primary winding 31 and induces the pulse voltage denoted Up in the secondary winding 32.
  • the superimposition of the pulse voltage Up and the high DC voltage U gl then results overall in the voltage profile shown in FIG. 2 on the electrostatic filter.
  • the individual pulses have a voltage duration of 200 microseconds.
  • the oscillation in the primary circuit runs in normal operation in such a way that after the thyristor 22 is fired, this thyristor initially carries the current denoted i T until the current is taken over by the diode 21 after the zero crossing.
  • the current i D which forms the second part of the oscillation of the primary current i, then flows through this diode. Is the diode current i o again through zero, the oscillation is terminated, initiated again by a firing pulse to the thyristor 22 to the oscillation circuit.
  • the thyristor 22 would fire again, even without an ignition pulse. However, this process would take a relatively long time, so that the thyristor is thermally overloaded.
  • the time period t x is therefore monitored, in which flows the diode current i D , ie the second half-wave of the primary current. If this time t x is less than the release time tq of the thyristor 22, it is immediately triggered again by an ignition pulse so that it can again take over the current. Since the DC voltage at the electrostatic filter was also reduced to zero as a result of the short circuit, this additional voltage pulse has no major effect.
  • a square-wave signal is generated in a flip-flop 82, the width t x of which corresponds to the distance between the zero crossings of the current i D.
  • This signal triggers a monostable multivibrator 83 which tilts back again within a time which is approximately the Freiwerdezei tt q of the thyristor 22 s t - speaks.
  • the output signal of this flip-flop together with the output signal of the flip-flop 82 are applied to a logic circuit 84, in which a comparison is made as to whether that is the current flow duration t.
  • a logic circuit 84 responds and inputs a memory 85 Set signal.
  • This memory gives via line 86 to the ignition circuit 23 an immediate command to ignite the thyristor 22 and then blocks the delivery of further ignition pulses by the ignition circuit 23 for a time dependent on the filter operating values. B. be made such that when the DC voltage at the filter has reached a certain level again through the control 7, the memory 85 is implemented and the ignition circuit 23 is thereby released.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electrostatic Separation (AREA)
  • Power Conversion In General (AREA)
  • Rectifiers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Surgical Instruments (AREA)
EP83112096A 1982-12-13 1983-12-01 Einrichtung zur Spannungsversorgung eines Elektrofilters Expired EP0111794B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112096T ATE18514T1 (de) 1982-12-13 1983-12-01 Einrichtung zur spannungsversorgung eines elektrofilters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3246057 1982-12-13
DE19823246057 DE3246057A1 (de) 1982-12-13 1982-12-13 Einrichtung zur spannungsversorgung eines elektrofilters

Publications (2)

Publication Number Publication Date
EP0111794A1 EP0111794A1 (de) 1984-06-27
EP0111794B1 true EP0111794B1 (de) 1986-03-12

Family

ID=6180508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112096A Expired EP0111794B1 (de) 1982-12-13 1983-12-01 Einrichtung zur Spannungsversorgung eines Elektrofilters

Country Status (5)

Country Link
US (1) US4873620A (enrdf_load_stackoverflow)
EP (1) EP0111794B1 (enrdf_load_stackoverflow)
JP (1) JPS59115758A (enrdf_load_stackoverflow)
AT (1) ATE18514T1 (enrdf_load_stackoverflow)
DE (2) DE3246057A1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2561453B2 (ja) * 1983-02-07 1996-12-11 住友重機械工業株式会社 電気集塵機用パルス電源
DE3511622A1 (de) * 1985-03-29 1986-10-09 Metallgesellschaft Ag, 6000 Frankfurt Verfahren und einrichtung zur versorgung eines elektroabscheiders mit hochspannungsimpulsen
DE3640092A1 (de) * 1986-11-24 1988-06-01 Metallgesellschaft Ag Verfahren und einrichtung zur energieversorgung eines elektroabscheiders
ES2075201T3 (es) * 1990-04-04 1995-10-01 Siemens Ag Procedimiento para la regulacion de la instalacion de alimentacion de corriente de un electrofiltro.
US5542967A (en) * 1994-10-06 1996-08-06 Ponizovsky; Lazar Z. High voltage electrical apparatus for removing ecologically noxious substances from gases
US6063168A (en) * 1997-08-11 2000-05-16 Southern Company Services Electrostatic precipitator
JP4627165B2 (ja) * 2004-09-02 2011-02-09 三菱電機株式会社 電力用半導体装置の制御用回路および制御用集積回路
EP1652586B2 (en) * 2004-10-26 2016-03-16 FLSmidth A/S Pulse generating system for electrostatic precipitator
US20070156051A1 (en) * 2005-12-29 2007-07-05 Amit Pascal Device and method for in-vivo illumination
US10734257B2 (en) * 2012-04-25 2020-08-04 Applied Materials, Inc. Direct current lamp driver for substrate processing
ES2888225T3 (es) * 2014-06-13 2022-01-03 Smidth As F L Control de una fuente de alimentación de alta tensión para un precipitador electrostático
RU2770756C2 (ru) * 2017-10-09 2022-04-21 Крафтповеркон Свиден Аб Система высоковольтного электропитания

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4831015B1 (enrdf_load_stackoverflow) * 1969-01-08 1973-09-26
DE1923952C3 (de) * 1969-05-10 1980-04-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Regelvorrichtung für einen Elektroabscheider zum elektrostatischen Abscheiden von Aerosolen, insbesondere für die Abgasentstaubung
SE364826B (enrdf_load_stackoverflow) * 1972-07-10 1974-03-04 Asea Ab
DK150012C (da) * 1975-03-03 1992-05-25 Smidth & Co As F L Elektrisk kobling til et elektrostatisk filter
JPS51116663A (en) * 1975-04-07 1976-10-14 Hitachi Ltd Gate control unit for thyrister valve
DE2713675C2 (de) * 1977-03-28 1984-08-23 Siemens AG, 1000 Berlin und 8000 München Stromversorgung für einen Elektroabscheider
JPS55141982A (en) * 1979-04-24 1980-11-06 Toshiba Corp Gate circuit for thyristor converter
SE446418B (sv) * 1980-07-07 1986-09-08 Asea Ab Aterhemtningsskydd for en tyristorventil med ett flertal seriekopplade tyristorer
DE3027172A1 (de) * 1980-07-17 1982-02-18 Siemens AG, 1000 Berlin und 8000 München Verfahren zum betrieb eines elektrofilters
NL8103474A (nl) * 1981-07-23 1983-02-16 Hollandse Signaalapparaten Bv Energieomzetter.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SIEMENS-ZEITSCHRIFT, Band 45, Heft 9, September 1971, ERLANGEN (DE), A. GOLLER et al.: "Elektrofiltersteuerung mit direkter Durchbruchserfassung", Seiten 567-572 *

Also Published As

Publication number Publication date
ATE18514T1 (de) 1986-03-15
US4873620A (en) 1989-10-10
JPS6110181B2 (enrdf_load_stackoverflow) 1986-03-28
DE3246057A1 (de) 1984-06-14
DE3362565D1 (en) 1986-04-17
EP0111794A1 (de) 1984-06-27
JPS59115758A (ja) 1984-07-04

Similar Documents

Publication Publication Date Title
EP0268934B1 (de) Verfahren und Einrichtung zur Energieversorgung eines Elektroabscheiders
EP0111794B1 (de) Einrichtung zur Spannungsversorgung eines Elektrofilters
DE69206182T2 (de) Hochfrequenz-Kommutationstyp geschützt durch Leistungsversorgung, insbesondere für elektrostatische Abscheider.
DE3133883A1 (de) "geregelte stromversorgungseinheit"
DE3779850T2 (de) Laservorrichtung mit hochspannungsimpulsgenerator, hochspannungsimpulsgenerator und verfahren zur impulserzeugung.
DE69400861T2 (de) Elektro-Abscheider
DE3884258T2 (de) Leistungsversorgung für Magnetron.
EP0676121A1 (de) Vorschaltgerät für mindestens ein parallel betriebenes gasentladungslampen-paar.
DE3323400C2 (de) Stromversorgungsschaltung für eine elektromagnetische Betätigungsvorrichtung
DE3927888A1 (de) Wechselrichteranordnung
DE3403619A1 (de) Elektrische stromversorgungsquelle fuer die verwendung in einer elektrostatischen ausfaellvorrichtung
DE3607414C2 (enrdf_load_stackoverflow)
CH656818A5 (de) Energiezuliefereinheit fuer eine funkenerosionsmaschine.
EP0060992A2 (de) Prüf- und Auswerteschaltung für Näherungsschalter in Maschinensteuerungen
EP0197369B1 (de) Verfahren und Einrichtung zur Versorgung eines Elektroabscheiders mit Hochspannungsimpulsen
DE69513646T2 (de) Schaltung zum Betreiben von Entladungslampen mit vorgeheizten Wendeln
DE4235766C1 (de) Koronagenerator
DE2745417C2 (de) Schaltung zum Erzeugen eines sägezahnförmigen Stroms in einer Spule
DE2950092C2 (de) Anordnung zum gleichzeitigen Zünden einer Vielzahl von in Reihe geschalteten Thyristoren
DE69225289T2 (de) Energieversorungseinrichtung eines Ozonerzeugers
EP0211300A2 (de) Schaltnetzteil
CH636210A5 (de) Verfahren und vorrichtung zum aufladen eines kondensators, sowie anwendung des verfahrens.
DE3437953C2 (enrdf_load_stackoverflow)
DE1751892C3 (de) Elektrische Impulserzeugungseinrichtung
DE2250711A1 (de) Steuerbare stromversorgungsanlage fuer einen lichtbogen-schmelzofen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI SE

17P Request for examination filed

Effective date: 19840726

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB LI SE

REF Corresponds to:

Ref document number: 18514

Country of ref document: AT

Date of ref document: 19860315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3362565

Country of ref document: DE

Date of ref document: 19860417

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 83112096.9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950217

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950317

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19951123

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19951129

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19951221

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19951226

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19951231

Ref country code: CH

Effective date: 19951231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19961201

Ref country code: AT

Effective date: 19961201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19961202

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19961201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970829

EUG Se: european patent has lapsed

Ref document number: 83112096.9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST