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This paper presents the use of induction generator turbine machines with simplified frequency control as a direct drive solution for wind energy conversion. An offshore wind farm system is proposed utilising a VSC-HVDC connection. The wind farm will contain variable speed wind turbines driving Squirrel Cage Induction Generators (SCIG). The study will look(More)
The effect of several modular approaches to the design, on the efficiency and size of a Solid State transformer (SST) are investigated. The modular approaches are evaluated for the case of 400 kVA, 10 kV/0.4 kV solid state transformers, considering the daily loading profile of the distribution network. The SST is compared to an equally rated low-frequency(More)
This paper investigates the potential for size reduction of a Dual Active Bridge (DAB) DC-DC converter for a solid state transformer (SST) by implementing the converter in a highly modular manner. It is shown that when IGBT switches are used, a high degree of modularization of the DAB results in lower efficiency and increased overall transformer weight.(More)
II ACKNOWLEDGEMENTS I would like to thank the department technicians, Aodh Dalton, Myles Meehan and especially Martin Burke for their continued assistance throughout this project. I would also like to thank my supervisor, Martin Glavin, for giving me the help I needed, and for giving me the liberty to develop this project, and Lisa Kelly, for her help with(More)
Technological progress and development is bringing commercially available power supplies integrated in a single chip closer and closer to reality. One of crucial milestones in this process is integration of inductors with magnetic core onto a silicon substrate. Such inductors enable full integration of a switch mode voltage converter in a single chip,(More)
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