Annual Report 2009 - webfiles its vmware

voltage stability of the transmission systems using transmission line models.Important relationships for different operating conditions and transmissioncapabilities will be predicted. Finally, the research will recommend the appropriateimprovements for the network.Electric power production based on combined energy sourcesParticipants: Ingemar Mathiasson, Ola CarlsonSponsor: ChalmersAutonomous electrical power generating systems are the kind of systems thathave the ability to work and generate power completely independent fromconventional main power grids. The autonomous systems could be of differentsizes, depending on the field of application in question. The autonomous systemscould be a way to solve the energy requirements for those regions that are faraway from the main grid. There are multiple needs, present and future, for thesespecial systems. An example of an application is power generation for smallvillages in the developing countries. These villages are very often located far fromthe main grid. One common way to solve the energy problem in these situations isto use diesel operated generators. Of course while these types of electric powergenerating systems serve their function, they also tend to be harmful to theenvironment. In the future it is necessary to employ more environmentally friendlysolutions that make use of renewable resources e.g. wind and sun. The objectiveof this research project is to analyze autonomous electrical power generatingsystems that fulfil these criteria. The systems consist in this case of foursubsystems:• Wind power system(s)• Sun power system(s) (PV-applications)• Diesel system(s) (as back up)• Power accumulator system(s) (e.g. fuel cells)The project is divided into two main parts, modelling and realization of a testsystem.Electrified vehicle and energy efficiencyThe research on Electrification of vehicles focuses on better utilization of electricpower equipment related to electrified vehicles as well as improved energyefficiency. Projects deal with using the existing propulsion converter andpropulsion electric machine for charging of the vehicle, and involve AndersLindskog, Saeid Haghbin and Sonja Lundmark. Others cover adapting powerelectronic equipment for electrified vehicles, and involve Ghasem Aghdam andTorbjörn Thiringer. Below follows a detailed description of the projects.33 |