WO1999049559A2 - Procede et dispositif pour supprimer les parasites dans des changeurs de frequence - Google Patents

Procede et dispositif pour supprimer les parasites dans des changeurs de frequence Download PDF

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Publication number
WO1999049559A2
WO1999049559A2 PCT/AT1999/000073 AT9900073W WO9949559A2 WO 1999049559 A2 WO1999049559 A2 WO 1999049559A2 AT 9900073 W AT9900073 W AT 9900073W WO 9949559 A2 WO9949559 A2 WO 9949559A2
Authority
WO
WIPO (PCT)
Prior art keywords
converter
connection
voltage
reference potential
winding
Prior art date
Application number
PCT/AT1999/000073
Other languages
German (de)
English (en)
Other versions
WO1999049559A3 (fr
Inventor
Lutz Erhartt
Karl Edelmoser
Original Assignee
Lutz Erhartt
Karl Edelmoser
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 Lutz Erhartt, Karl Edelmoser filed Critical Lutz Erhartt
Priority to AU30175/99A priority Critical patent/AU3017599A/en
Publication of WO1999049559A2 publication Critical patent/WO1999049559A2/fr
Publication of WO1999049559A3 publication Critical patent/WO1999049559A3/fr

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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4216—Arrangements for improving power factor of AC input operating from a three-phase input voltage
    • 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
    • H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
    • 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
    • H02M1/123—Suppression of common mode voltage or current
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the invention relates to a device and a method for avoiding common mode interference or earth leakage currents in converters, as described in the preambles of claims 1 and 2.
  • a voltage source is interposed between the DC-side positive and negative supply lines of the converter on the one hand and the connections of the DC system on the other hand, so that the DC voltage between the connections of the DC system rests against the earth potential, although the DC voltage between the supply lines of the converter moves with respect to the earth potential.
  • Pulse rectifier circuits take up sine-like mains currents and thus reduce the system perturbations, but represent a major source of interference.
  • the converter connected to the three-phase network generates a DC voltage which, compared to the ground potential, moves at least with switching frequency and switching speed by voltage values that are in the range of the DC link voltage.
  • the alternating component of the voltage generated by the converter between the DC supply lines of the converter and a reference potential of the other system, preferably the neutral point potential of a three-phase system, is referred to below as common mode interference voltage. It leads to problems especially at higher switching frequencies.
  • inverters frequency converters
  • IGBT inverters 6 kHz is already achieved.
  • Higher Switching frequencies are aimed at reducing torque pulsations and noise, but are currently not possible due to the high stress on the insulation in the machines.
  • the filter costs for reducing the output overvoltage of a converter are, depending on their quality, between 10% and 100% of the converter costs and increase the power loss by 1% -1.5% of the nominal power of the converter.
  • Inverters are preferably used to exchange energy between a three-phase system and a direct current system.
  • the largest areas of application are drive converters and uninterruptible power supplies.
  • New, rapidly growing areas of application are reactive power compensators and network equalizers, as well as inverters for feeding renewable energy (solar and wind power) into the public three-phase network and direct current supplies with sinusoidal input currents (pulse rectifier, PFC).
  • All areas of application are becoming increasingly important, with the switching frequency of the converters generally increasing. In the case of pulse rectifiers, too, higher switching frequencies are desirable because of the lower network effects.
  • a converter for example as shown in FIG. 1, is shown in the equivalent circuit diagram of FIG. 3 as a common-mode gate voltage source with internal impedance for the earth capacitors.
  • the common-mode interference voltage is a step function with four voltage levels of the converter is twice the DC voltage or DC link voltage.
  • the internal impedance is one third of the phase impedance of the converter.
  • the phase impedances of the converter are coils with a correspondingly high inductance and as such its large and cost-determining elements.
  • Converter, phase impedances and earth capacitance in Fig. 3 form a series resonant circuit that is excited with the common mode noise voltage. It is obvious that
  • the resonant circuit is only very slightly vaporized by the line resistances and the internal resistances of the phase impedances,
  • the interference voltage which excites the resonant circuit has a broad spectrum from 300 Hz (B6 ripple) to the switching frequency up to the narrow megahertz (switching edges),
  • the differential choke is also an essential component in the common mode interference suppression filters US 4,888,675 A and JP 09 233 854 A.
  • the present invention has for its object to provide a method and an apparatus for interference suppression of converter structures, which is applicable to all structures and which exceeds the previous solutions in terms of economy, operational safety and effectiveness.
  • An advantage of this solution is that due to the compensation of the common mode interference voltage, the resonant circuit formed from the internal impedance of the converter and the earth capacitance is no longer excited and resonance peaks can no longer occur.
  • the device described in the characterizing part of claim 1 consists of a three-winding transformer, which can advantageously be designed only for the switching frequency of the converter.
  • the design of claim 2 prevents the magnetization of the three-winding interference suppressor transformer.
  • FIG. 3 equivalent circuit diagram of a converter compared to the earth capacitance of the intermediate circuit and the load (s) connected to it;
  • Fig. 4 block diagram of the method for common mode interference suppression;
  • Fig.5 Three winding transformer for common mode interference suppression
  • Fig.6 Device for largely avoiding a DC magnetization of the three-winding transformer.
  • the converters 1 in Fig.la and b allow the energy flow in only one direction. These are controlled rectifiers with low mains feedback for supplying a direct current consumer or a direct current or direct voltage intermediate circuit, for example. a drive system.
  • the converter 1 in FIG. 1c can control the energy flow in both directions.
  • the phase voltages of a three-phase system are connected to terminals 2,3,4 of the converter.
  • Terminal 5 is connected to the star point 22 of the three-phase system. This is usually at ground potential or is made potential-free using a mains transformer.
  • a three-phase load can also be connected to the terminals 2-5. Is it eg.
  • phase inductances 6, 7 and 8 of the converter are dimensioned very small or are formed at all by the winding inductances of the machine connected in a triangle or star.
  • the housing of the machine and the star point 22 are usually connected to the earth potential in accordance with regulations.
  • the DC voltage connections of the converter are the terminals 9 and 10.
  • the terminal 16 is connected to the center 15. All elements connected to the DC voltage intermediate circuit, that is, capacitors, filters, consumers, lines, power semiconductors.
  • there can also be a DC voltage source for example. a solar panel, a Wind generator or the like, etc., have an earth capacity.
  • the sum of these earth capacitances is summarized in the capacitance 17, which is connected on the one hand to the node 15 and on the other hand is connected to the earth potential 30.
  • the earth leakage resistance 24 is parallel to the earth capacitance 17.
  • FIG. 2 shows the control signals 18, 19, 20 for the changeover switches 27, 28, 29 of the bidirectional converter in FIG. 1c with the star point 22 at ground potential and the resulting common mode interference voltage 21 between the terminals 5 and 16 without taking into account the ground impedances 17 and 24
  • the positive amplitude 25 and the negative amplitude 26 are half the DC voltage between the terminals 9 and 10.
  • the system shows that the converter acts with respect to the terminals 5 and 16 like the series connection from the ideal interference voltage source 21 with an internal impedance 23 , which results from the phase impedances 6,7,8.
  • FIG. 3 shows the equivalent circuit diagram for all inverters with regard to terminals 5 and 16 when the earth capacitance 17 is small compared to the intermediate circuit capacitors 11 and 12. It is a weakly damped series resonant circuit consisting of the coil 23 and the earth capacitance 17, which is excited by the common mode interference voltage 21. Due to the resonant voltage peaks, 5 or 16 large voltages occur at the ungrounded terminal, which lead, among other things, to insulation problems.
  • FIG. 4 shows the basic circuit diagram of the method for common mode interference suppression.
  • Inverter 1 is connected to the three-phase system with terminals 2-5.
  • the common mode interference filter 31 is connected to its DC-side connection terminals 9, 10. It consists of the voltage sources 34, 35, which compensate for the common mode interference voltage 21 over any earth impedance 40 between the terminals 5 and 16. They are each between a connecting terminal 9, 10 of the converter and a connecting terminal 32, 33 of the intermediate circuit. When the compensation is complete, there is between the. Terminal 5 and terminals 32 and 33, which are at ground potential, only apply direct voltages. No current flows through the earth capacitance of the intermediate circuit connected to terminals 32 and 33, including the consumer.
  • a device according to the invention is shown in FIG.
  • the transformer 31 consists of the transformer 31, the primary winding 37 of which is connected to the terminals 5 and 16.
  • the common mode interference voltage 21 present at the primary winding 37 is transmitted to the secondary winding 38 between the terminals 9 and 32 and to the secondary winding 36 between the terminals 10 and 33.
  • the primary winding 37 has a capacitor 40 connected in series in order to decouple a DC component of the common mode interference voltage that may be present on the common mode interference voltage 21 from the filter transformer 31.
  • circuit elements described can be replaced by any other circuit parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un procédé permettant d'éliminer les parasites en mode commun de changeurs de fréquence (1) avec lesquels le flux d'énergie entre deux systèmes électriques différents, un de ces systèmes étant un système à courant continu, peut être régulé avec une faible perte. Le changeur de fréquence produit la tension parasite en mode commun (21) qui apparaît entre les potentiels de référence des deux systèmes électriques. Le potentiel de référence du système à courant continu est présent au niveau de la borne (16), celui de l'autre système, de préférence le potentiel neutre d'un système triphasé, est présent au niveau de la borne (5). Aux bornes (5 et 16) sont raccordés l'enroulement primaire (37) du transformateur de déparasitage (31) dont les enroulements secondaires (36, 38) sont montés dans la ligne d'alimentation positive et dans la ligne d'alimentation négative du système à courant continu, et raccordés aux bornes du changeur de fréquence (9, 10) côté courant continu et aux bornes (32, 33) du système à courant continu. La tension parasite en mode commun (21) apparaissant au niveau de l'enroulement (37) est également présente au niveau des enroulements secondaires (36, 38) et elle est ainsi compensée de telle sorte qu'aucune tension alternative n'est présente entre un potentiel de référence approprié du système à courant continu et le potentiel à la borne (5) de l'autre système électrique, lequel est de préférence le potentiel de terre.
PCT/AT1999/000073 1998-03-20 1999-03-19 Procede et dispositif pour supprimer les parasites dans des changeurs de frequence WO1999049559A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30175/99A AU3017599A (en) 1998-03-20 1999-03-19 Method and device for suppressing interference in frequency converters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA490/98 1998-03-20
AT0049098A ATA49098A (de) 1998-03-20 1998-03-20 Verfahren und vorrichtung zur entstörung von umrichtern

Publications (2)

Publication Number Publication Date
WO1999049559A2 true WO1999049559A2 (fr) 1999-09-30
WO1999049559A3 WO1999049559A3 (fr) 2000-02-03

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PCT/AT1999/000073 WO1999049559A2 (fr) 1998-03-20 1999-03-19 Procede et dispositif pour supprimer les parasites dans des changeurs de frequence

Country Status (3)

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AT (1) ATA49098A (fr)
AU (1) AU3017599A (fr)
WO (1) WO1999049559A2 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1553699A1 (fr) * 2002-08-19 2005-07-13 TDK Corporation Circuit de suppression de signal dans le mode commun et circuit de suppression de signal dans le mode normal
DE10353192A1 (de) * 2003-11-13 2005-08-04 Schüler, Uwe, Dipl.-Ing.(FH) Verfahren zur Kompensation eines Erdableitstromes bei elektrischen Betriebsmitteln und Vorrichtung zur Kompensation eines Erdableitstromes beim Betrieb von elektrischen Betriebsmitteln
EP1692758A2 (fr) * 2003-10-30 2006-08-23 The Regents of the University of California Blocs de commande triphase pour convertisseurs de puissance
WO2008134206A2 (fr) * 2007-04-23 2008-11-06 Raytheon Company Procédés et appareil pour redresseur triphasé avec commutateurs basse tension
DE102005050842B4 (de) * 2005-10-24 2011-06-09 Siemens Ag Verfahren zum Betrieb eines Umrichters sowie Schaltungsanordnung
DE102014210562A1 (de) * 2014-06-04 2015-12-17 Robert Bosch Gmbh Vorrichtung und verfahren für ein anriebssystem mit einem ein-/ rückspeisefähigen umrichter
EP2367272A3 (fr) * 2010-02-25 2017-06-21 Kostal Industrie Elektrik GmbH Onduleur
EP3916980A1 (fr) * 2020-05-26 2021-12-01 Delta Electronics (Shanghai) Co., Ltd. Dispositif de conversion
US11509239B2 (en) 2020-05-26 2022-11-22 Delta Electronics (Shanghai) Co., Ltd Conversion device having reduced size and cost

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186524A2 (fr) * 1984-12-28 1986-07-02 Kabushiki Kaisha Toshiba Filtre de ligne
US4888675A (en) * 1987-08-26 1989-12-19 Harris Corporation Switching power supply filter
US5502630A (en) * 1994-07-19 1996-03-26 Transistor Devices, Inc. Power factor corrected rectification
DE19736786A1 (de) * 1997-08-23 1999-02-25 Asea Brown Boveri U-Umrichter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186524A2 (fr) * 1984-12-28 1986-07-02 Kabushiki Kaisha Toshiba Filtre de ligne
US4888675A (en) * 1987-08-26 1989-12-19 Harris Corporation Switching power supply filter
US5502630A (en) * 1994-07-19 1996-03-26 Transistor Devices, Inc. Power factor corrected rectification
DE19736786A1 (de) * 1997-08-23 1999-02-25 Asea Brown Boveri U-Umrichter

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1553699A4 (fr) * 2002-08-19 2008-03-05 Tdk Corp Circuit de suppression de signal dans le mode commun et circuit de suppression de signal dans le mode normal
EP1553699A1 (fr) * 2002-08-19 2005-07-13 TDK Corporation Circuit de suppression de signal dans le mode commun et circuit de suppression de signal dans le mode normal
US7796411B2 (en) 2003-10-30 2010-09-14 The Regents Of The University Of California Universal three phase controllers for power converters
EP1692758A2 (fr) * 2003-10-30 2006-08-23 The Regents of the University of California Blocs de commande triphase pour convertisseurs de puissance
US8279647B2 (en) 2003-10-30 2012-10-02 The Regents Of The University Of California Universal three phase controllers for power converters
EP1692758A4 (fr) * 2003-10-30 2009-09-16 Univ California Blocs de commande triphase pour convertisseurs de puissance
DE10353192A1 (de) * 2003-11-13 2005-08-04 Schüler, Uwe, Dipl.-Ing.(FH) Verfahren zur Kompensation eines Erdableitstromes bei elektrischen Betriebsmitteln und Vorrichtung zur Kompensation eines Erdableitstromes beim Betrieb von elektrischen Betriebsmitteln
DE10353192B4 (de) * 2003-11-13 2007-03-08 Schüler, Uwe, Dipl.-Ing. Schaltungsanordnungen zur Kompensation eines kapazitiven Erdableitstroms bei elektrischen Betriebsmitteln
DE102005050842B4 (de) * 2005-10-24 2011-06-09 Siemens Ag Verfahren zum Betrieb eines Umrichters sowie Schaltungsanordnung
US7751212B2 (en) 2007-04-23 2010-07-06 Raytheon Company Methods and apparatus for three-phase rectifier with lower voltage switches
WO2008134206A3 (fr) * 2007-04-23 2008-12-18 Raytheon Co Procédés et appareil pour redresseur triphasé avec commutateurs basse tension
WO2008134206A2 (fr) * 2007-04-23 2008-11-06 Raytheon Company Procédés et appareil pour redresseur triphasé avec commutateurs basse tension
EP2367272A3 (fr) * 2010-02-25 2017-06-21 Kostal Industrie Elektrik GmbH Onduleur
DE102014210562A1 (de) * 2014-06-04 2015-12-17 Robert Bosch Gmbh Vorrichtung und verfahren für ein anriebssystem mit einem ein-/ rückspeisefähigen umrichter
DE102014210562A8 (de) * 2014-06-04 2016-04-14 Robert Bosch Gmbh Vorrichtung und verfahren für ein antriebssystem mit einem ein-/ rückspeisefähigen umrichter
EP3916980A1 (fr) * 2020-05-26 2021-12-01 Delta Electronics (Shanghai) Co., Ltd. Dispositif de conversion
US11509239B2 (en) 2020-05-26 2022-11-22 Delta Electronics (Shanghai) Co., Ltd Conversion device having reduced size and cost
US11515806B2 (en) 2020-05-26 2022-11-29 Delta Electronics (Shanghai) Co., Ltd Conversion device having reduced common-mode current

Also Published As

Publication number Publication date
ATA49098A (de) 1999-09-15
WO1999049559A3 (fr) 2000-02-03
AU3017599A (en) 1999-10-18

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