(19)
(11) EP 3 869 682 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
12.06.2024 Bulletin 2024/24

(45) Mention of the grant of the patent:
17.04.2024 Bulletin 2024/16

(21) Application number: 20159044.5

(22) Date of filing: 24.02.2020
(51) International Patent Classification (IPC): 
H02M 7/5395(2006.01)
H02J 3/38(2006.01)
(52) Cooperative Patent Classification (CPC):
H02J 3/388; H02M 7/5395; H02J 2310/10; Y04S 20/12; Y02B 90/20

(54)

A METHOD AND A CONTROL DEVICE FOR CONTROLLING A POWER CONVERTER

VERFAHREN UND STEUERUNGSVORRICHTUNG ZUR STEUERUNG EINES STROMWANDLERS

PROCÉDÉ ET DISPOSITIF DE COMMANDE D'UN CONVERTISSEUR DE PUISSANCE


(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(43) Date of publication of application:
25.08.2021 Bulletin 2021/34

(73) Proprietor: Danfoss A/S
6430 Nordborg (DK)

(72) Inventors:
  • TARKIAINEN, Antti
    53100 LAPPEENRANTA (FI)
  • SUMMANEN, Antti
    53850 LAPPEENRANTA (FI)

(74) Representative: Väänänen, Janne Kalervo et al
Vanarix Oy Laaksolahdentie 74
02730 Espoo
02730 Espoo (FI)


(56) References cited: : 
CN-A- 109 980 682
US-A1- 2018 358 907
CN-B- 107 453 412
   
  • GENG YIWEN ET AL: "A Modified Droop Control for Grid-Connected Inverters With Improved Stability in the Fluctuation of Grid Frequency and Voltage Magnitude", IEEE ACCESS, vol. 7, 31 May 2019 (2019-05-31), pages 75658-75669, XP011731136, DOI: 10.1109/ACCESS.2019.2920312 [retrieved on 2019-06-19]
  • Shalini Raosaheb Borade ET AL: "Analysis of Voltage-Frequency (VF) Droop Control Method for AC Microgrid Application", , 2 February 2018 (2018-02-02), XP055721735, Retrieved from the Internet: URL:https://www.ijarse.com/images/fullpdf/ 1518687068_MCCIA3056_IJARSE.pdf [retrieved on 2020-08-11]
  • CAI HANGYI ET AL: "The novel droop control strategy for low voltage microgrid without matching line impedance", 2017 IEEE CONFERENCE ON ENERGY INTERNET AND ENERGY SYSTEM INTEGRATION (EI2), IEEE, 26 November 2017 (2017-11-26), pages 1-6, XP033288497, DOI: 10.1109/EI2.2017.8245760 [retrieved on 2018-01-02]
  • Goethner Fredrik: "Microgrids: What are they, virtual impedance and a control concept for inverters in islanded microgrids - #SINTEFblog", , 10 April 2019 (2019-04-10), XP055902275, Retrieved from the Internet: URL:https://blog.sintef.com/sintefenergy/e lectric-power-components/microgrids-what-a re-they-virtual-impendance-and-a-control-c oncept-for-inverters-in-islanded-microgrid s/ [retrieved on 2022-03-16]
  • LU JINGHANG ET AL: "Virtual resistance-based control strategy for DC link regeneration protection and current sharing in uninterruptible power supply", 2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), IEEE, 1 October 2017 (2017-10-01), pages 4481-4487, XP033247412, DOI: 10.1109/ECCE.2017.8096769 [retrieved on 2017-11-03]
  • CARNIATO L A ET AL: "Power flow optimization for grid connected inverter using evolutionary algorithm and additional control loop", POWER ELECTRONICS CONFERENCE (COBEP), 2011 BRAZILIAN, IEEE, 11 September 2011 (2011-09-11), pages 422-427, XP031999391, DOI: 10.1109/COBEP.2011.6085285 ISBN: 978-1-4577-1644-7
  • MICAH J ERICKSON ET AL: "Impact of active resistance on dynamic power responses in a CERTS microgrid", POWER AND ENERGY CONFERENCE AT ILLINOIS (PECI), 2012 IEEE, IEEE, 24 February 2012 (2012-02-24), pages 1-5, XP032168488, DOI: 10.1109/PECI.2012.6184614 ISBN: 978-1-4577-1681-2
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).