CA2216133A1 - Method and device for correcting the dc offset of a converter - Google Patents

Method and device for correcting the dc offset of a converter

Info

Publication number
CA2216133A1
CA2216133A1 CA002216133A CA2216133A CA2216133A1 CA 2216133 A1 CA2216133 A1 CA 2216133A1 CA 002216133 A CA002216133 A CA 002216133A CA 2216133 A CA2216133 A CA 2216133A CA 2216133 A1 CA2216133 A1 CA 2216133A1
Authority
CA
Canada
Prior art keywords
converter
offset
correcting
pass filter
low
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.)
Granted
Application number
CA002216133A
Other languages
French (fr)
Other versions
CA2216133C (en
Inventor
Peter Dahler
Osvin Gaupp
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.)
ABB Schweiz AG
Original Assignee
ABB Asea Brown Boveri Ltd
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 ABB Asea Brown Boveri Ltd filed Critical ABB Asea Brown Boveri Ltd
Publication of CA2216133A1 publication Critical patent/CA2216133A1/en
Application granted granted Critical
Publication of CA2216133C publication Critical patent/CA2216133C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

A method and a device for correcting the DC
offset of a converter are specified. The invention is defined in that the output voltage of the converter on the AC voltage side is fed to an essentially passive low-pass filter which reduces the output voltage to a level which can be processed electronically. Connected downstream of the low-pass filter is a controller which controls the DC offset essentially to zero by delaying the switching commands. The low-pass filter and the controller are arranged at a high-voltage potential.
CA002216133A 1996-11-25 1997-09-23 Method and device for correcting the dc offset of a converter Expired - Fee Related CA2216133C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19648696A DE19648696A1 (en) 1996-11-25 1996-11-25 Method and device for regulating the DC offset of a converter
DE19648696.3 1996-11-25

Publications (2)

Publication Number Publication Date
CA2216133A1 true CA2216133A1 (en) 1998-05-25
CA2216133C CA2216133C (en) 2005-02-08

Family

ID=7812666

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002216133A Expired - Fee Related CA2216133C (en) 1996-11-25 1997-09-23 Method and device for correcting the dc offset of a converter

Country Status (7)

Country Link
US (1) US5870297A (en)
EP (1) EP0844729B1 (en)
JP (1) JPH10164849A (en)
AT (1) ATE233447T1 (en)
CA (1) CA2216133C (en)
DE (2) DE19648696A1 (en)
ZA (1) ZA978695B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100553293B1 (en) * 1999-02-02 2006-02-22 로크웰삼성오토메이션 주식회사 An apparatus for eliminating variable offset values of current detecting signals and its method
US6385007B1 (en) 2000-08-29 2002-05-07 International Business Machines Corporation Heat dissipation system of magnetic recording disk
FI112558B (en) * 2002-05-17 2003-12-15 Vacon Oyj Inverter control
JP2006136037A (en) * 2004-11-02 2006-05-25 Fuji Electric Holdings Co Ltd Circuit for detecting dc component of inverter output voltage
DE102007036700A1 (en) 2007-08-03 2009-02-05 Semikron Elektronik Gmbh & Co. Kg Driver circuit for a power converter with DC link
US7800925B2 (en) * 2008-03-05 2010-09-21 Honeywell International Inc. Mitigation of unbalanced input DC for inverter applications
DE102011084773A1 (en) 2010-10-20 2012-04-26 Sunways Ag Guided power transformer-free inverter for grid-connected photovoltaic system, has regulating device controlling shift operations of switch device dependent on detected voltages such that direct current component in network is reduced
US8922062B2 (en) * 2011-03-14 2014-12-30 Sunpower Corporation Automatic voltage regulation for photovoltaic systems
US9680301B2 (en) 2011-10-27 2017-06-13 Sunpower Corporation Master-slave architecture for controlling operation of photovoltaic power plants
US20160065046A1 (en) * 2014-08-29 2016-03-03 John Alan GIBSON Method and circuits for diminishing dc offset
DE102016124233A1 (en) 2016-12-13 2018-06-14 TRUMPF Hüttinger GmbH + Co. KG Protection arrangement for protecting a transformer and method for protecting a transformer
EP3721678B1 (en) * 2017-12-04 2024-01-24 CFT S.p.A. Ohmic heater and method for operating
DE102021201149A1 (en) * 2021-02-08 2022-08-11 Robert Bosch Gesellschaft mit beschränkter Haftung Readout circuit for a sensor system and sensor system

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Publication number Priority date Publication date Assignee Title
US4124885A (en) * 1977-03-23 1978-11-07 Westinghouse Electric Corp. Offset compensation for harmonic neutralized static AC generator
US4307441A (en) * 1980-07-28 1981-12-22 United Technologies Corporation Current balanced DC-to-DC converter
ATA386782A (en) * 1982-10-21 1984-05-15 Fronius Schweissmasch REGULATED SWITCHING MACHINE FOR TEMPERATURE AND / OR AC ARC WELDING
US4521672A (en) * 1981-10-27 1985-06-04 Miller Electric Manufacturing Company Electronic welding apparatus
US4439822A (en) * 1982-03-26 1984-03-27 California Institute Of Technology Method and apparatus for detecting and preventing impending magnetic saturation in magnetic materials
DE3682033D1 (en) * 1985-11-21 1991-11-21 Toshiba Kawasaki Kk CONTROL DEVICE FOR POWER CONVERTER.
JPH0724463B2 (en) * 1986-03-07 1995-03-15 株式会社東芝 Power converter
FR2609552B1 (en) * 1987-01-09 1990-11-30 Merlin Gerin CIRCUIT FOR MEASURING THE CONTINUOUS COMPONENT OF THE CURRENT THROUGH THE PRIMARY WINDING OF THE OUTPUT TRANSFORMER OF AN INVERTER
JPH0775471B2 (en) * 1987-02-12 1995-08-09 三菱電機株式会社 Inverter device
US4800477A (en) * 1987-11-23 1989-01-24 Anthony Esposito Digitally controlled switch-mode power supply apparatus employing quantized stored digital control signals
JP2783555B2 (en) * 1988-09-26 1998-08-06 株式会社東芝 Power converter
DE3900796A1 (en) * 1989-01-12 1990-07-19 Asea Brown Boveri Arrangement for avoiding transformer saturation when operating a voltage converter
US4939633A (en) * 1989-02-03 1990-07-03 General Signal Corporation Inverter power supply system
JPH0777516B2 (en) * 1989-04-27 1995-08-16 三菱電機株式会社 Output DC component prevention device for multi-phase inverter
JPH03150095A (en) * 1989-11-07 1991-06-26 Nippon Otis Elevator Co Offset correction circuit of pwm inverter
US4994950A (en) * 1990-07-31 1991-02-19 Eaton Corporation Waveform generator for inverter control
US5045988A (en) * 1990-07-31 1991-09-03 Eaton Corporation Isolated adjustable frequency AC inverter control
JP2774685B2 (en) * 1990-09-12 1998-07-09 株式会社東芝 Inverter control device with DC bias suppression control for three-phase transformer
IT1255581B (en) * 1992-07-22 1995-11-09 Ansaldo Spa CIRCUIT DEVICE TO AVOID SATURATION OF THE TRANSFORMER IN A DC / AC CONVERTER WITH REGULATOR REVERSE INVERTER
JP3220570B2 (en) * 1993-06-25 2001-10-22 オークマ株式会社 Inverter control device
JPH0728534A (en) * 1993-07-13 1995-01-31 Toshiba Corp Controller for power converter
DE4408325C2 (en) * 1994-03-11 1996-03-07 Siemens Ag Method for controlling an inverter of an inverter and arrangement for carrying out the method
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JPH08228485A (en) * 1995-02-21 1996-09-03 Fuji Electric Co Ltd Circuit for adjusting offset of three-phase ac detector
JPH08233869A (en) * 1995-03-01 1996-09-13 Toshiba Corp Current detecting circuit

Also Published As

Publication number Publication date
DE19648696A1 (en) 1998-05-28
ZA978695B (en) 1998-03-26
US5870297A (en) 1999-02-09
DE59709385D1 (en) 2003-04-03
JPH10164849A (en) 1998-06-19
EP0844729A2 (en) 1998-05-27
EP0844729A3 (en) 2000-03-01
ATE233447T1 (en) 2003-03-15
EP0844729B1 (en) 2003-02-26
CA2216133C (en) 2005-02-08

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Legal Events

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EEER Examination request
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