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Blar i NTNU Open på forfatter "Göthner, Fredrik T. B. W."

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    • Challenges of SiC MOSFET Power Cycling Methodology 

      Göthner, Fredrik T. B. W.; Spro, Ole Christian; Hernes, Magnar; Peftitsis, Dimosthenis (Chapter, 2018)
      This paper investigates the power cycling methodology for reliability testing of SiC metal-oxide-semiconductor field-effect transistors (MOSFETs). Dedicated test benches were designed and built to study this issue. The ...
    • Effect of Including Transient Virtual Impedance in Droop-Controlled Microgrids 

      Göthner, Fredrik T. B. W.; Midtgård, Ole-Morten; Torres Olguin, Raymundo E.; D'Arco, Salvatore (Chapter, 2018)
      Droop control has shown promising results for decentralized power sharing in microgrids. However, the basic scheme can suffer from unequal reactive power sharing power due to differing line impedances between converters ...
    • The Effect of Non-Ideal Operating Conditions on Reliability of Inverters in Microgrids 

      Berg, Sondre Johan Kjellin; Göthner, Fredrik T. B. W.; Vadlamudi, Vijay Venu; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2020)
      Microgrids are becoming increasingly popular due to modern trends in power consumption and distribution. Power converters are essential in order to ensure the desired function of a microgrid. As with traditional distribution ...
    • Investigation of the Effect of Operating Conditions on Reliability of DC-link Capacitors in Microgrids 

      Berg, Sondre Johan Kjellin; Vadlamudi, Vijay Venu; Göthner, Fredrik T. B. W.; Peftitsis, Dimosthenis (Chapter, 2020)
      This paper considers a microgrid system where the impact of different non-ideal operating conditions on the reliability of the DC-link capacitor in three phase inverter systems is investigated. Rather than focusing on the ...
    • Power- and Current-Based Control of Distributed Inverters in Low-Voltage Microgrids: Considerations in Relation to Classic Droop Control 

      Dos Santos Alonso, Augusto Matheus; Göthner, Fredrik T. B. W.; Brandao, Danilo Iglesias; Marafao, Fernando Pinhabel; Tedeschi, Elisabetta (Chapter, 2020)
      This paper addresses the matter of active and reactive power sharing among distributed inverters in low-voltage microgrids, particularly highlighting the peculiarities of two strategies of coordinated control based on a ...
    • Unbalanced Load Compensation by PowerBased Control in the Synchronous Reference Frame 

      Göthner, Fredrik T. B. W.; Brandao, Danilo; Tedeschi, Elisabetta (Chapter, 2019)
      Power-based control has proven to be an effective and robust way for having a centralized control scheme in a microgrid. The scheme has a minimal communication requirement, which enables the distributed energy resources ...
    • Virtual Impedance Design for Power Quality and Harmonic Sharing Improvement in Microgrids 

      Göthner, Fredrik T. B. W.; Midtgård, Ole-Morten; Torres Olguin, Raymundo E.; Roldan-Pérez, Javier (Chapter; Peer reviewed, 2019)
      One of the main challenges of decentrally operated islanded microgrids has been proper harmonic sharing for parallel connected inverters. This is largely affected by differences in the feeder impedances of the inverters. ...

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