Carbon Dioxide, CO2 (R744) was one of the first commonly applied working fluids in the infancy of refrigeration more than 100 years ago. In contrast to ammonia it mainly disappeared after the first generation of synthetic refrigerants have been introduced to the market after 1930. One reason was...
MaRINET Project funded by the EU through the 7th Framework Programme, aims to accelerate the development of marine renewable energy (wave, tidal, offshore-wind) by bringing together world-class testing facilities at all scales. It involves a total of 29 partners across the European Union and...
Black-box transformer high-frequency models can be determined via frequency sweep measurements and curve fitting based on rational functions. This procedure often leads to unacceptable model behaviors around 50/60 Hz, making it hard to properly initialize the model for high-frequency transient...
Transmission active power losses can influence the distribution of power flows in the transmission grid which consequently alter the generation dispatch and scheduling through the power system. This can especially affect the exploitation of large scale renewable energy sources (RES) since they are...
The objective of this paper is to present the current status and possibilities of microgrid in Nepal. There are many possibilities of microgrid implementation, interconnecting micro hydro power plants (MHPs). Hybrid microgrids could also be formed interconnecting MHPs with wind turbines or...
The output voltage references in grid connected Voltage Source Converters must be limited according to the available dc voltage to avoid over-modulation and windup of the current controllers. This may be especially critical for Active Power Filters (APFs), since uncontrolled over-modulation can...
In Norway there is an increased interest in utilizing photovoltaic generation of electricity (PV) in building installations. As many parts of the LV distribution system in Norway are rather weak, large influx of PV might introduce both voltage quality problems as well as feeder overloads. As the...