WO2008142018A1 - Filtre passe-bas sujet aux pertes - Google Patents

Filtre passe-bas sujet aux pertes Download PDF

Info

Publication number
WO2008142018A1
WO2008142018A1 PCT/EP2008/056040 EP2008056040W WO2008142018A1 WO 2008142018 A1 WO2008142018 A1 WO 2008142018A1 EP 2008056040 W EP2008056040 W EP 2008056040W WO 2008142018 A1 WO2008142018 A1 WO 2008142018A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
filter
pass filter
low
lossy
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.)
Ceased
Application number
PCT/EP2008/056040
Other languages
German (de)
English (en)
Inventor
Hubert Schierling
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 WO2008142018A1 publication Critical patent/WO2008142018A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from AC input or output

Definitions

  • the invention relates to a lossy low-pass filter according to the preamble of claim 1.
  • Filter circuits in particular LC low-pass filters, have a resonance frequency. If such a filter is excited in the vicinity of this resonance frequency, this excitation is greatly enhanced. This excitation can be done by mains harmonics or harmonics of a connected to a network inverter.
  • LC low-pass filters in particular lossy low-pass filters, can be used as mains filters or as output filters in a converter. Filters that have the described problem can be seen from the fact that in them the rms value of the capacitor current in the event of excitation in the resonance is greater than in normal operation.
  • FIG. 1 shows a block diagram of an inverter 2 without a DC link capacitor, which is provided with a line filter 4.
  • This converter 2 has a regenerative network-clocked power converter 6, which is also referred to as a fundamental frequency front end converter (FE), and a self-commutated pulse-controlled converter 8 on the load side.
  • FE fundamental frequency front end converter
  • These two power converters 6 and 8 are the direct voltage side electrically conductive with each other connected.
  • the network-side terminals 10, 12 and 14 of the network-side regenerative power converter 6 are electrically connected by means of the network filter 4 with a network, not shown.
  • As a line filter 4 an LC low-pass filter is provided, which has a filter inductor 16 and a filter capacitor 18 for each mains phase.
  • the filter inductance 16 can be generated by a choke or by the internal resistance of the network.
  • the filter capacitors 18 are electrically connected in this illustration in delta, but can also be electrically connected in star.
  • This voltage intermediate-circuit converter 2 with a FE feed-in converter 6 is described in detail in the publication "PCIM 2003 - Nuremberg", May 2003, so that it is not necessary to discuss this converter in more detail here.
  • FIG. 2 shows a block diagram of a load-side converter 20 of a voltage intermediate-circuit converter (not shown in full) with an output filter 22 (FIG. 1 of EP 0 682 402 A1). From the voltage source inverter also a DC link capacitor 24 is shown.
  • the output-side terminals 26, 28 and 30 of the load-side converter 20, which is also referred to as an inverter, are associated with inputs of the output filter 22, at whose outputs a load is connected.
  • As output filter 22, a lossy LC low-pass filter is provided as output filter 22, a lossy LC low-pass filter is provided.
  • This lossy low-pass filter 22 has a filter inductor 16, a filter capacitor 18 and a damping resistor 32 for each output phase of the inverter 20.
  • the filter capacitors 18 are electrically connected in star in this illustration, but can also be electrically connected in a triangle.
  • a damping resistor 32 is electrically connected in series with a filter capacitor 18.
  • the invention is based on the object of developing a lossy low-pass filter in such a way that its power loss is reduced.
  • a separating device can be arranged in one of these capacitor branches.
  • this capacitor branch is separated at a resonance frequency excitation.
  • the capacitance value of the filter capacitor changes, causing this lossy low-pass filter to be detuned.
  • the lossy low-pass filter closes its resonance range, so that the excitation is not amplified so much.
  • the detuning of this lossy low-pass filter depends on the number of separable capacitor branches.
  • a switch and a temperature measuring device may be provided, wherein the temperature measuring device with a damping resistor of a capacitor branch of a capacitor strand of the lossy low-pass filter is thermally and output side linked to a control input of the switch.
  • the separation of a capacitor branch of a capacitor strand is achieved as a function of the temperature of this resistor.
  • PTC resistor More advantageous and less expensive is the use of a resistor with a positive temperature coefficient, a so-called PTC resistor.
  • This PTC resistor is electrically in series with a capacitor of a capacitor branch each connected to a capacitor strand of the lossy low-pass filter. The electrical resistance of this PTC resistor increases with increasing temperature so much that this capacitor branch appears to be separated for the capacitor current. Since this resistor with positive temperature coefficients can conduct a current only at low temperatures, this is also referred to as a PTC thermistor.
  • a filter according to the invention can be designed with less damping, that is, with lower losses.
  • a filter according to the invention which is used as a line filter, can be used for a wide range of network inductance. This makes such a filter robust against any network.
  • Figure 1 shows a block diagram of an inverter with a line filter
  • Figure 2 is a block diagram of an inverter of an inverter with associated output filter shown
  • FIG. 3 shows a first embodiment of a capacitor string of a lossy one
  • Figure 4 shows an advantageous embodiment of a capacitor string of a lossy low-pass filter according to the invention is shown and wherein in the
  • FIGS 5 to 7 show different embodiments of the capacitor string according to Figure 4 are shown.
  • FIG. 3 shows a first embodiment of a capacitor string 34 of a lossy, for example polyphase, low-pass filter 22.
  • a series connection of a damping resistor 32 and a filter capacitor 18 forms a capacitor string 34.
  • this filter capacitor 18 is split into two capacitor branches 36 and 38.
  • a capacitor 40 and the damping resistor 32 are electrically connected in series, wherein in the capacitor branch 38, a capacitor 42 and a switch 44 are electrically connected in series.
  • the sum of the two capacitance values of the two capacitors 40 and 42 corresponds to the capacitance value of the filter capacitor 18, for example the lossy low-pass filter 22 of FIG. 2.
  • this capacitor string 34 also has a temperature measuring device 36 which thermally couples with the damping resistor 32 is linked.
  • this temperature measuring device 46 is electrically conductively connected to a control input of the switch 44.
  • any switchable semiconductor switch or mechanical switch (relay) can be provided.
  • the capacitor branch 38 of this capacitor string 34 is separated. This halves the capacitance value of the filter capacitor 18, as a result of which this filter 22 is detuned.
  • excitation in the vicinity of the resonance frequency of the filter 22 is canceled because the resonance frequency of the detuned filter 22 is not equal to the resonance frequency of the un-detuned filter 22.
  • the resistance of the damping resistor 32 may be lower, whereby the lossy low-pass filter 22 according to the invention has a lower attenuation. Because of the lower attenuation, this filter 22 also has a lower power loss.
  • FIG. 4 shows an advantageous embodiment of a capacitor string 34 of the lossy low-pass filter 22 is shown schematically.
  • This advantageous embodiment differs from the embodiment according to FIG. 3 in that, instead of the switch 44 and the temperature measuring device 46, a resistor 48 with positive temperature coefficients is provided.
  • This PTC thermistor 48 is connected electrically in series with the capacitor 42 of the capacitor branch 38 of the capacitor string 34. With reaching a PTC temperature of this PTC thermistor 48 is very high. The transition from low-impedance to high-impedance state is very steep. In high-resistance state, this PTC resistor 48 can no longer conduct electricity. As a result, the capacitor 42 is switched out of this capacitor string 34, whereby the capacitance value of the filter capacitor 18 has been halved.
  • FIG. 5 schematically illustrates another embodiment of a capacitor string 34 of a lossy low-pass filter 22 according to the invention.
  • This capacitor string 34 differs from the capacitor string 34 of Figure 4 in that the capacitor branch 38, a further damping resistor 50 is provided which is electrically connected in series with the PTC resistor 48.
  • a thermistor 48 having a smaller resistance can be used.
  • This PTC thermistor 48 is cheaper compared to the PTC thermistor 48 of the embodiment of Figure 4 and reaches its PTC temperature in a shorter time.
  • the attenuation of the filter can be chosen so independent of the availability of PTC resistors of appropriate size by this further damping resistor.
  • FIG. 6 illustrates a further embodiment of a capacitor string 34 of a lossy low-pass filter 22 according to the invention.
  • This embodiment differs from the embodiment according to FIG. 5 in that the capacitor branch 36, consisting of the series connection of the damping resistor 32 and the capacitor 40, is connected electrically in parallel to the series connection of the cold conductor 48 and the capacitor 42 of the capacitor strand 38.
  • the damping resistor 50 for both capacitor branches 36 and 38 is effective. That is, the resistance value of the damping resistor 32 of the capacitor branch 36 can be further reduced without changing the operation of the detuning of the filter 22 anything.
  • the resistor 50 contributes to detuning the filter for damping.
  • FIG. 7 shows a further embodiment of a capacitor string 34 of a lossy low-pass filter 22 according to the invention.
  • a filter capacitor 18 of the filter 22 is divided into three capacitors 40, 42 and 52, which are each arranged in a capacitor branch 36, 38 and 54.
  • These capacitor branches 36, 38 and 54 are electrically connected in parallel, so that the sum of the capacitance values of these three capacitors 40, 42 and 52 is equal to the capacitance value of the filter capacitor 18 of the low-pass filter 22 according to FIG.
  • the two capacitor branches 36 and 38 each have a PTC resistor 48 and 56.
  • These three electrically parallel capacitor branches 36, 38 and 40, a damping resistor 58 is connected in series.
  • the PTC thermistors 48 and 56 and the capacitor values are chosen so that the detuning of the filter 22 is made stepwise.
  • the capacitance value of the filter capacitor 18 is reduced by one third, wherein in a second stage, the capacitance value is reduced by a third. This also dominates the case that the excitation contains both the resonance of the unvoiced filter and that of the first-stage detuned filter.
  • the configuration according to the invention of the capacitor strings 34 of a lossy multiphase low-pass filter can be applied to all filter topologies in which the effective value of a capacitor current in the case of excitation in the resonance becomes greater than in normal operation.
  • the invention can be applied not only to the line filter of a F E converter of a voltage source converter 2 according to FIG. 1, but to all types of line filters and also to output filters of converters, for example according to FIG.
  • each capacitor strand 34 of a lossy low-pass filter 22 reduces the cost of such a filter, because the size of the damping resistors can be reduced. As a result, a lossy low-pass filter 22 with capacitor strands 34 designed according to the invention has a lower power loss. In addition, this filter 22 is more robust against mains harmonics, mains impedance variations, and harmonic distortion of the power converter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)

Abstract

L'invention concerne un filtre passe-bas (22) sujet aux pertes, présentant une inductance de filtre (16), un condensateur de filtre (18) et une résistance d'amortissement (32), reliée électriquement au condensateur de filtre (18) dans un montage en série. Selon l'invention, le condensateur de filtre (18) est réparti sur au moins deux branches de condensateur (36, 38) et un dispositif de coupure est placé dans au moins une branche de condensateur (38). On obtient ainsi un filtre passe-bas sujet aux pertes, présentant une plus faible dissipation de puissance et robuste vis-à-vis de n'importe quel réseau.
PCT/EP2008/056040 2007-05-23 2008-05-16 Filtre passe-bas sujet aux pertes Ceased WO2008142018A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710023845 DE102007023845B4 (de) 2007-05-23 2007-05-23 Verlustbehaftetes Tiefpassfilter
DE102007023845.4 2007-05-23

Publications (1)

Publication Number Publication Date
WO2008142018A1 true WO2008142018A1 (fr) 2008-11-27

Family

ID=39863021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/056040 Ceased WO2008142018A1 (fr) 2007-05-23 2008-05-16 Filtre passe-bas sujet aux pertes

Country Status (2)

Country Link
DE (1) DE102007023845B4 (fr)
WO (1) WO2008142018A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3078454A1 (fr) * 2018-02-27 2019-08-30 Commissariat A L'energie Atomique Et Aux Energies Alternatives Module d’alimentation pour moteur de vehicule electrique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1658344A1 (ru) * 1988-07-20 1991-06-23 Николаевский Кораблестроительный Институт Им.Адм.С.О.Макарова Устройство плавного включени статического преобразовател
EP0682402A1 (fr) * 1994-05-11 1995-11-15 Schaffner Elektronik Ag Dispositif pour la limitation de la pente des grandeurs de sortie d'un convertisseur auto-commuté à circuit intermédiaire à tension continue
DE19822130C1 (de) * 1998-05-07 1999-10-28 Manoharan Thamodharan Verfahren zur Steuerung eines Lichtbogenschweißgeräts
DE19931055A1 (de) * 1999-07-06 2001-01-18 Epcos Ag Schutzvorrichtung zur Vermeidung der Überlastung von Kondensatoren mit hochfrequenten Spannungen
DE10330283A1 (de) * 2003-07-04 2005-02-03 Siemens Ag Vorrichtung zur Begrenzung von auftretenden Potentialverschiebungen eines Zwischenkreises eines Gleichspannungszwischenkreis-Umrichters
DE102005019215A1 (de) * 2005-04-25 2006-11-02 Siemens Ag Ausgangsfilter für einen gepulsten Stromrichter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01117666A (ja) * 1987-10-29 1989-05-10 Fuji Electric Co Ltd マグネット励磁用サイリスタ整流器の直流平滑回路

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1658344A1 (ru) * 1988-07-20 1991-06-23 Николаевский Кораблестроительный Институт Им.Адм.С.О.Макарова Устройство плавного включени статического преобразовател
EP0682402A1 (fr) * 1994-05-11 1995-11-15 Schaffner Elektronik Ag Dispositif pour la limitation de la pente des grandeurs de sortie d'un convertisseur auto-commuté à circuit intermédiaire à tension continue
DE19822130C1 (de) * 1998-05-07 1999-10-28 Manoharan Thamodharan Verfahren zur Steuerung eines Lichtbogenschweißgeräts
DE19931055A1 (de) * 1999-07-06 2001-01-18 Epcos Ag Schutzvorrichtung zur Vermeidung der Überlastung von Kondensatoren mit hochfrequenten Spannungen
DE10330283A1 (de) * 2003-07-04 2005-02-03 Siemens Ag Vorrichtung zur Begrenzung von auftretenden Potentialverschiebungen eines Zwischenkreises eines Gleichspannungszwischenkreis-Umrichters
DE102005019215A1 (de) * 2005-04-25 2006-11-02 Siemens Ag Ausgangsfilter für einen gepulsten Stromrichter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3078454A1 (fr) * 2018-02-27 2019-08-30 Commissariat A L'energie Atomique Et Aux Energies Alternatives Module d’alimentation pour moteur de vehicule electrique
WO2019166733A1 (fr) * 2018-02-27 2019-09-06 Commissariat A L'energie Atomique Et Aux Energies Alternatives Module d'alimentation pour moteur de véhicule électrique

Also Published As

Publication number Publication date
DE102007023845A1 (de) 2009-01-22
DE102007023845B4 (de) 2012-11-08

Similar Documents

Publication Publication Date Title
DE3333768C2 (fr)
EP2737510B1 (fr) Disjoncteur de courant continu
EP1805879B1 (fr) Filtre reseau polyphase
WO2011128139A1 (fr) Unité de couplage et module de batterie à onduleur à impulsions intégré, à fiabilité élevée
EP3870982B1 (fr) Procédé de mesure de la résistance d'isolement dans les onduleurs à topologie multipoint et les onduleurs à topologie multipoint
WO2011128136A1 (fr) Batterie à tension de sortie variable
DE202016100226U1 (de) Passives Filter für Wechselstrom-Oberschwingungen und Verzerrungen
EP1069673B1 (fr) Filtre réseau
DE102008026869B4 (de) Verlustbehaftetes dreiphasiges Tiefpassfilter
EP2367272B1 (fr) Onduleur
EP1779488B1 (fr) Filtre de reseau
EP2789091B1 (fr) Procédé d'élimination d'un arc électrique généré par au moins une source de tension simple d'un circuit onduleur
WO2008142018A1 (fr) Filtre passe-bas sujet aux pertes
WO2014001116A1 (fr) Onduleurs en parallèle sur une bobine de choc
DE102010027856A1 (de) Batterie mit integriertem Pulswechselrichter
WO2011113403A2 (fr) Circuit de convertisseur de moteur pour un moteur d'entraînement électrique et dispositif d'entraînement électrique équipé d'un circuit de convertisseur de moteur de ce type
DE112020004142T5 (de) Dc-leistungsverteilsystem
WO2003085797A2 (fr) Procede de transmission inductive d'energie electrique
DE102015003225A1 (de) Wechselrichter
DE102018010146A1 (de) Vorrichtung zur Filterung von hochfrequenten Störspannungen in einer Schaltung zur Leistungsfaktorkorrektur
DE102022210814A1 (de) Fahrzeugladeschaltung mit zweistufiger Entladung über Gleichspannungswandler und passive Entladungsschaltung
DE4224037C2 (de) Abgestimmter Filterkreis einer Filterkreisanlage für Energieverteilnetze
WO2020084064A1 (fr) Dispositif de filtrage pour un réseau d'énergie, utilisation d'un agencement de bobines et procédé de fonctionnement d'un dispositif de filtrage
DE102011003182A1 (de) Vorrichtung zum Unterdrücken harmonischer Oberschwingungen
AT18164U1 (de) Synchronkonverter mit Über- und Unterstromschutz

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08750327

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08750327

Country of ref document: EP

Kind code of ref document: A1