• A Voltage Instability Predictor Using Local Area Measurements 

      Warland, Leif (Dr. ingeniøravhandling, 0809-103X; 2002:21, Doctoral thesis, 2002)
      There has been a pressure to operate power systems closer to their security limits. This has partially been due to financial imperatives following the deregulating of markets. Other practical difficulties have been obtaining ...
    • Charge accumulation in rod-plane air gap with covered rod 

      Mauseth, Frank (Doktoravhandlinger ved NTNU, 1503-8181; 2006:239, Doctoral thesis, 2007)
      The focus of this work has been on hybrid insulation in inhomogeneous electric fields under lightning impulse voltage stress. The principal idea behind hybrid insulation is the intentional use of surface charges to ...
    • Distributed Generation - Power Electronic Converters, Communication and Control 

      Hoff, Erik Stjernholm (Doktoravhandlinger ved NTNU, 1503-8181; 2007:89, Doctoral thesis, 2007)
      This thesis tries to explain the changes in the control of power electronic converters that are possible by the use of communication. Many of the renewable energy sources such as photovoltaic panels are geographically ...
    • Electrical Power Supply to Offshore Oil Installations by High Voltage Direct Current Transmission 

      Myhre, Jørgen Chr. (Dr. ingeniøravhandling, 0809-103X; 2001:24, Doctoral thesis, 2001)
      This study was initiated to investigate if it could be feasible to supply offshore oil installations in the North Sea with electrical power from land. A prestudy of alternative converter topologies indicated that the most ...
    • Multilevel Power Electronic Converters for Electrical motor Drives 

      Lund, Richard (Doktoravhandlinger ved NTNU, 1503-8181; 2005:62, Doctoral thesis, 2005)
      Power electronic converters are widely used in industrial power conversion systems both for utility and drives applications. As the power level increases, the voltage level is increased accordingly to obtain satisfactory ...
    • Peaking Capacity in Restructured Power Systems 

      Doorman, Gerard (Dr. ingeniøravhandling, 0809-103X; 2000:100, Doctoral thesis, 2000)
      The theme of this thesis is the supply of capacity during peak demand in restructured power systems. There are a number of reasons why there is uncertainty about whether an enegyonly electricity market (where generators ...