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Blar i NTNU Open på forfatter "Midtgård, Ole-Morten"

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    • A real-time energy management system for smart grid integrated photovoltaic generation with battery storage 

      Nge, Chee Lim; Ranaweera, K.M. Iromi Udumbara; Midtgård, Ole-Morten; Norum, Lars Einar (Journal article; Peer reviewed, 2019)
      This paper proposes a real-time energy management system (EMS) suitable for rooftop PV installations with battery storage. The EMS is connected to a smart grid where the price signals indirectly control the power output ...
    • An insight into geometry and orientation of capacitors for high-speed power circuits 

      Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2018)
      SiC transistors can switch extremely fast. Often turn-off di/dt is reduced to limit the turn-off over voltages due to the stray inductances in the commutation loops. Thus, the potential low switching losses are not met. ...
    • Analyse og Feilsøking av et Eldre BIPV Anlegg - Reparasjon av Solveggen på Gløshaugen, NTNU 

      Norheim, Marius (Master thesis, 2015)
      Denne oppgaven ser på Solveggen på Gløshaugen, NTNU. Dette er et nett-tilknyttet BIPV anlegg i form av en dobbeltfasade som ble installert rundt årtusenskiftet. Anlegget ble installert for å undersøke dypere hvordan en ...
    • Avoiding Voltage Rise in Distribution Grids Using Energy Storage Systems 

      Melkevik, Mari (Master thesis, 2016)
      As a consequence of the combination of increased worldwide energy consumption and rising concerns regarding environment, the amount of renewable electric power plants are rapidly increasing. These are often connected ...
    • Causes and Impacts of Partial Shading for a Building-Applied PV System 

      Ødegården, Lovinda (Master thesis, 2016)
      The world as we know it today is full of technical equipment that requires energy of some sort, let it be oil, gas or electricity. With an increasing growth of the earth s population, as well as a boost in the general ...
    • Centralized control of energy storages for voltage support in low-voltage distribution grids 

      Ranaweera, Iromi; Midtgård, Ole-Morten (Chapter, 2016)
      This paper presents a centralized voltage control scheme for unbalanced low-voltage grids experiencing over voltage problems due to high PV power penetration. Voltage control is primarily achieved by remotely controlling ...
    • Characterization of body diodes in the-state-of-the-art SiC FETs-Are they good enough as freewheeling diodes? 

      Tiwari, Subhadra; Abuishmais, Ibrahim Abed; Langelid, John Kåre; Lund, Richard; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2018)
      This paper investigates the switching phenomenon of body diodes in the state-of-the-art discrete SiC FETs. A comparative performance evaluation of the body diodes in planar and double-trench SiC MOS-FETs, and trench cascode ...
    • CLIQ Based Quench Protection of 16 [T] Nb3Sn Block-Coil Dipole Magnets for a Future Circular Collider 

      Ghini, Jonas Blomberg (Master thesis, 2015)
      Protection of large high-field, high-energy accelerator magnets is very challenging with current technology. To avoid damage to the magnet coil by local or global overheating, the maximum temperature in the hot-spot of the ...
    • Comparative evaluation of a commercially available 1.2 kV SiC MOSFET module and a 1.2 kV Si IGBT module 

      Tiwari, Subhadra; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter; Conference object; Peer reviewed, 2016)
      In this paper, a comparative performance evaluation of a 1.2 kV SiC MOSFET module and a 1.2 kV Si IGBT module is carried out under a series of different conditions such as similar dv/dt, di/dt, voltage overshoot, current ...
    • Control strategies for residential battery energy storage systems coupled with PV systems 

      Ranaweera, Iromi; Midtgård, Ole-Morten; Korpås, Magnus; Farahmand, Hossein (Chapter, 2017)
      This paper presents, and compares the performances of four control strategies for residential battery energy storages coupled with photovoltaic (PV) energy systems. The control strategies are: 1) rule based control, 2) ...
    • Design and Performance Analysis of an Electric Motor Drive utilizing Sillicon Carbide MOSFETs 

      Kvitvang, Jostein Danielsen (Master thesis, 2017)
      The recent commercialization SiC technology, has made it desirable to use SiC in electrical motor drives for marine applications, due to the superior material qualities of SiC compared to conventional Si based technology. ...
    • Distributed control scheme for residential battery energy storage units coupled with PV systems 

      Ranaweera, Iromi; Midtgård, Ole-Morten; Korpås, Magnus (Journal article, 2017)
      A distributed control method for residential battery energy storage (BES) units coupled with photovoltaic (PV) systems is presented. The objective is to utilize customer owned BES units for solving the over-voltage issues ...
    • Driver stage implementation with improved turn-on and turn-off delay for wide band gap devices 

      Spro, Ole Christian; Guidi, Giuseppe; Ljøkelsøy, Kjell; Hernes, Magnar; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2018)
      This paper presents a driver topology intended for WBG devices with the goal of improving the switching performance. In particular, the initial delay time of the switching transient was targeted. In high power and high ...
    • Driving of a GaN enhancement mode HEMT transistor with zener diode protection for high efficiency and low EMI 

      Spro, Ole Christian; Basu, Supratim; Abuishmais, Ibrahim Abed; Midtgård, Ole-Morten; Undeland, Tore Marvin (Chapter, 2017)
      The ultra-low gate charge characteristics and low gate voltage limitation of a GaN enhancement mode HEMT in combination with stray circuit elements poses many challenges of driving them in power electronic applications. ...
    • 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 ...
    • Efficiency and Conducted EMI evaluation of a single-phase power factor correction boost converter using state-of-the-art SiC MOSFET and SiC diode 

      Tiwari, Subhadra; Basu, Supratim; Undeland, Tore Marvin; Midtgård, Ole-Morten (Journal article; Peer reviewed, 2019)
      SiC-based diodes and MOSFETs switch extremely quickly with low conduction losses. Thus, from the perspective of efficiency, such devices are ideal for a continuous conduction mode (CCM) boost power factor correction (PFC) ...
    • Elektrisk energiproduksjon fra et delvis skyggelagt solcelleanlegg i Trondheim: Simuleringsforsøk og overvåkning av faktisk produksjon 

      Hårklau, Siri (Master thesis, 2014)
      Denne oppgaven tar for seg «Lerkendalsanlegget», som er et nettilknyttet solcelleanlegg installert i bygningen der TrønderEnergi har sitt hovedkontor. Bakgrunnen for oppgaven er at modulene i anlegget er delvis skyggelagt ...
    • Energy Management System for a Photovoltaic System With Battery Storage Participating in Grid Voltage Quality Improvement 

      Ranaweera, Iromi; Midtgård, Ole-Morten (Chapter, 2015)
      Coupling an energy storage to a photovoltaic (PV) system not only increases the self-consumption but also solves the over-voltage issues if the cycling of the storage is properly controlled. Whatever the application the ...
    • Energy Storage for Control of Distributed Photovoltaic Power Systems 

      Ranaweera, K. M. Iromi Udumbara (Doctoral theses at NTNU;2019:15, Doctoral thesis, 2019)
      The residential energy storage market is growing at a rapid pace in many countries. Increasing the consumption of locally produced energy and the use of energy storage as a backup source have been the main reasons for ...
    • Evaluation of Switching Characteristics, Switching Losses and Snubber Design for a Full SiC Half-Bridge Power Module 

      Torsæter, Bendik Nybakk (Master thesis, 2016)
      In this thesis, the performance of the full Silicon Carbide (SiC) half-bridge power module BSM120D12P2C005 from Rohm Semiconductor is investigated. A laboratory circuit enabling double-pulse tests of the half-bridge module ...

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