EP1293253B1 - Source de haute tension à impulsion pour filtre électrique - Google Patents

Source de haute tension à impulsion pour filtre électrique Download PDF

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Publication number
EP1293253B1
EP1293253B1 EP02020250A EP02020250A EP1293253B1 EP 1293253 B1 EP1293253 B1 EP 1293253B1 EP 02020250 A EP02020250 A EP 02020250A EP 02020250 A EP02020250 A EP 02020250A EP 1293253 B1 EP1293253 B1 EP 1293253B1
Authority
EP
European Patent Office
Prior art keywords
pulse generator
voltage pulse
storage capacitor
voltage
inductance
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 - Lifetime
Application number
EP02020250A
Other languages
German (de)
English (en)
Other versions
EP1293253A3 (fr
EP1293253A2 (fr
Inventor
Werner Dr. Hartmann
Michael Dr. Römheld
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1293253A2 publication Critical patent/EP1293253A2/fr
Publication of EP1293253A3 publication Critical patent/EP1293253A3/fr
Application granted granted Critical
Publication of EP1293253B1 publication Critical patent/EP1293253B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • Such high voltage pulse generators are well known. They are used, for example, to superimpose voltage pulses in electrostatic dust collectors (electrostatic precipitators) of a DC voltage to increase the separation efficiency.
  • High-voltage pulse generators are often heavily loaded by flashovers in the electrostatic precipitator (filter punctures). Because due to the filter breakdown large voltage and / or current levels are coupled into the pulse generator. The coupling can be so strong that it leads to the destruction of components of the pulse generator, in particular the switching device. Under certain circumstances, such a filter breakdown also an increase in the pending on the storage capacitor Voltage by several 10 kV result, which can lead to destruction of the storage capacitor.
  • the object of the present invention is to provide a high-voltage pulse generator for an electrostatic precipitator, which is considerably cheaper to produce than high-voltage pulse generators of the prior art.
  • a diode is arranged, which is arranged with respect to a charging current flowing from the high voltage source into the storage capacitor in the forward direction and is flowed through by the charging current when the switching device is opened.
  • a short-circuit path of low impedance is provided in a filter breakdown, so that a short-circuit current is kept from the other elements of the high-voltage pulse generator.
  • a voltage acting on the other components of the high-voltage pulse generator is limited to the forward voltage of the diode.
  • a short-circuit current flowing through the diode is limited by the output inductance.
  • the recharging current limiting element When a recharging current limiting element is arranged between the storage capacitor and the second node, currents from the remaining components of the high voltage pulse generator are particularly reliably prevented.
  • the recharging current limiting element is preferably designed as an inductance.
  • a high-voltage pulse generator has a storage capacitor 1 which is connected to a high-voltage source 4 via a first and a second supply line 2, 3.
  • the storage capacitor 1 is high-voltage source side, a switching device 5 with a freewheeling diode device 5 'connected in parallel.
  • the second supply line 3 has two nodes 6, 7. Via the first node 6, the second supply line 3 is connected to a reference potential. An output inductance 8 is connected to the second node 7. Between the nodes 6, 7, a diode 9 is arranged.
  • a charging current limiting element 10 is arranged between the high voltage source 4 and the switching device 5.
  • the charging current limiting element 10 is according to FIG. 1 as a combination (here serial connection) of a resistor formed with an inductance.
  • the charging current limiting element 10 could also be embodied as a pure resistor or as a pure inductance.
  • a high-voltage pulse can be output via the output inductance 8 and one of these downstream decoupling capacitor 11 to an electrostatic filter 12 which is shown only schematically.
  • the electrostatic filter 12 is precharged via its own high voltage source 13 with a DC voltage in the range of several 10 kV.
  • the DC voltage level of the electrostatic filter 12 is decoupled via the decoupling capacitor 11 from the high-voltage pulse generator.
  • the storage capacitor 1 When the switching device 5 is opened, the storage capacitor 1 is charged via the leads 2, 3 with a charging current I. For this purpose, the diode 9 is poled in the forward direction. When the switching device 5 is closed, the storage capacitor 1 is discharged, whereby the voltage applied to the electrostatic filter 12 is increased.
  • the diode 9 With regard to the discharge of the storage capacitor 1, the diode 9 is poled in the reverse direction.
  • the storage capacitor 1 therefore discharges exclusively via the inductance 14 and the output inductance 8.
  • the inductance 14 serves as a recharging current limiting element 14 and is arranged between the storage capacitor 1 and the second node 7.
  • the high-voltage pulse generator according to the invention is thus formed high-voltage resistant using only one high-voltage diode 9 between the two nodes 6, 7.
  • the storage capacitor 1 and the switching device 5 can therefore be dimensioned considerably less expensive than in a comparable high-voltage pulse generator of the prior art.
  • the power loss of erfindungsgmä touch high-voltage pulse generator is significantly lower than the power loss of a comparable pulse generator, in which between the nodes 6, 7, a resistor or an inductance is arranged.
  • no parasitic oscillations with high-voltage amplitudes of more than 10 kV can occur in the pulse generator according to the invention, which is the case with pulse generators in which an inductance is arranged between the two nodes 6, 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Electrostatic Separation (AREA)
  • Dc-Dc Converters (AREA)
  • Power Conversion In General (AREA)

Claims (6)

  1. Générateur d'impulsions de haute tension pour un électrofiltre ( 12 ),
    - comprenant un condensateur ( 1 ) accumulateur, qui est relié à une source ( 4 ) de haute tension par une première et une deuxième lignes ( 2, 3 ), la deuxième ligne ( 3 ) étant reliée à un potentiel de référence par un premier point ( 6 ) nodal,
    - comprenant un dispositif ( 5 ) de commutation, qui est monté en parallèle du côté de la source de haute tension avec le condensateur ( 1 ) accumulateur,
    - et comprenant une inductance ( 8 ) de sortie, qui est reliée à la deuxième ligne ( 3 ) par un deuxième point ( 7 ) nodal, le deuxième point ( 7 ) nodal étant interposé entre le condensateur ( 1 ) accumulateur et le premier point ( 6 ) nodal et une impulsion de haute tension pouvant être émise en passant par l'inductance ( 8 ) de sortie,
    caractérisé
    en ce que, entre le premier et le deuxième points ( 6, 7 ) nodal, est montée une diode ( 9 ), qui, par rapport à un courant ( I ) de charge allant de la source ( 4 ) de haute tension au condensateur ( 1 ) accumulateur, est polarisée dans le sens passant et est parcourue par le courant ( I ) de charge lorsque le dispositif ( 5 ) de commutation est ouvert.
  2. Générateur d'impulsions de haute tension suivant la revendication 1,
    caractérisé
    en ce qu'un élément ( 10 ) limiteur du courant de charge est monté dans la première ligne ( 2 ) entre la source ( 4 ) de haute tension et le dispositif ( 5 ) de commutation.
  3. Générateur d'impulsions de haute tension suivant la revendication 2,
    caractérisé
    en ce que l'élément ( 10 ) de limitation du courant de charge est constitué sous la forme d'une résistance, d'une inductance ou d'une combinaison d'une résistance et d'une inductance.
  4. Générateur d'impulsions de haute tension suivant la revendication 1, 2 ou 3,
    caractérisé
    en ce qu'un élément ( 14 ) de limitation du contre-courant de charge est monté entre le condensateur ( 1 ) accumulateur et le deuxième point ( 7 ) nodal.
  5. Générateur d'impulsions de haute tension suivant la revendication 4,
    caractérisé
    en ce que l'élément ( 4 ) de limitation du contre-courant de charge est constitué sous la forme d'une inductance ( 14 ).
  6. Générateur d'impulsions de haute tension suivant l'une des revendications précédentes,
    caractérisé
    en ce qu'un condensateur ( 11 ) de découplage est monté en aval de l'inductance de sortie.
EP02020250A 2001-09-18 2002-09-10 Source de haute tension à impulsion pour filtre électrique Expired - Lifetime EP1293253B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145993A DE10145993A1 (de) 2001-09-18 2001-09-18 Hochspannungs-Pulsgenerator für ein Elektrofilter
DE10145993 2001-09-18

Publications (3)

Publication Number Publication Date
EP1293253A2 EP1293253A2 (fr) 2003-03-19
EP1293253A3 EP1293253A3 (fr) 2006-03-29
EP1293253B1 true EP1293253B1 (fr) 2010-09-01

Family

ID=7699436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020250A Expired - Lifetime EP1293253B1 (fr) 2001-09-18 2002-09-10 Source de haute tension à impulsion pour filtre électrique

Country Status (6)

Country Link
US (1) US7067939B2 (fr)
EP (1) EP1293253B1 (fr)
AT (1) ATE479502T1 (fr)
DE (2) DE10145993A1 (fr)
ES (1) ES2351434T3 (fr)
PT (1) PT1293253E (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328586A1 (de) * 2003-06-25 2005-01-20 Siemens Ag Elektrostatisches Filter mit Durchschlagerkennung
PL1652586T5 (pl) 2004-10-26 2016-08-31 Smidth As F L System wytwarzający impulsy dla odpylacza elektrostatycznego
US9498783B2 (en) * 2011-05-24 2016-11-22 Carrier Corporation Passively energized field wire for electrically enhanced air filtration system
US10005015B2 (en) 2011-05-24 2018-06-26 Carrier Corporation Electrostatic filter and method of installation
US11192119B2 (en) 2017-10-09 2021-12-07 Kraftpowercon Sweden Ab High-voltage power supply system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602080A (ja) 1983-06-17 1985-01-08 Hitachi Ltd 高電圧パルス電源
US4600411A (en) * 1984-04-06 1986-07-15 Lucidyne, Inc. Pulsed power supply for an electrostatic precipitator
US5274271A (en) * 1991-07-12 1993-12-28 Regents Of The University Of California Ultra-short pulse generator
IT1276108B1 (it) * 1995-11-10 1997-10-24 Enel Spa Circuito elettronico per generare impulsi elettrici ad alta tensione in un alimentatore a impulsi per un precipitatore elettrostatico
JP2828958B2 (ja) 1996-02-29 1998-11-25 住友重機械工業株式会社 パルス荷電型電気集塵機用回路及び電気集塵機
EP0927506B1 (fr) * 1997-07-22 2001-10-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Systeme d'eclairage comprenant une lampe a decharge a barriere dielectrique et un circuit pour produire des sequences d'impulsions
EP1119912B1 (fr) * 1998-09-29 2002-05-29 Siemens Aktiengesellschaft Generateur d'impulsions destine a produire une impulsion de tension et procede correspondant

Also Published As

Publication number Publication date
DE10145993A1 (de) 2003-04-24
ES2351434T3 (es) 2011-02-04
EP1293253A3 (fr) 2006-03-29
DE50214622D1 (de) 2010-10-14
US7067939B2 (en) 2006-06-27
ATE479502T1 (de) 2010-09-15
US20030071521A1 (en) 2003-04-17
EP1293253A2 (fr) 2003-03-19
PT1293253E (pt) 2010-09-30

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