Search for dissertations about: "Voltage source converter"
Showing result 21 - 25 of 66 swedish dissertations containing the words Voltage source converter.
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21. Modelling and control of a line-commutated HVDC transmission system interacting with a VSC STATCOM
Abstract : The interaction of an HVDC converter with the connected power system is of complex nature. An accurate model of the converter is required to study these interactions. The use of analytical small-signal converter models provides useful insight and understanding of the interaction of the HVDC system and the connected system components. READ MORE
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22. Main Circuits, Submodules, and Auxiliary Power Concepts for Converters in HVDC Grids
Abstract : In order to enable the massive introduction of renewable energies the need for high-voltage direct current (HVDC) grids is anticipated. Large, globally interconnected HVDC networks will likely be the most cost-efficient means to balance electricity demand and available generation. READ MORE
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23. On Power Electronics Interface for Distributed Generation Applications and its Impact on System Reliability to Customers
Abstract : Distributed generation (DG) is being employed as a means of achieving increased reliability for electrical power systems as regarded by consumers. As the most of DG technologies utilize renewable sources, the power electronic interface plays a vital role to match the characteristics of a DG unit with the grid requirements. READ MORE
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24. Harmonic Mitigation in Traction Drives
Abstract : In railway traffic the low friction between wheel and rail causes long braking distances, normally much longer than the sight distance of the driver, i.e. if the driver starts the braking when a problem on the track is discovered, it might be too late to brake the train. Therefore, safe railway traffic can not only rely on the driver. READ MORE
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25. Modeling and Control of VSC-HVDC Links Connected to Weak AC Systems
Abstract : For high-voltage direct-current (HVDC) transmission, the strength of the ac system is important for normal operation. An ac system can be considered as weak either because its impedance is high or its inertia is low. READ MORE