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Direct interconnection of offshore electricity generators

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dc.contributor.advisor Leahy, Martin J.
dc.contributor.advisor Toal, Daniel Pican, Emmanuel 2012-08-23T14:39:59Z 2012-08-23T14:39:59Z 2011
dc.description peer-reviewed en_US
dc.description.abstract In distributed energy systems, permanent magnet synchronous generators (PMSG) are often connected to the grid via power converters, such as voltage source converters (VSC). The price of the converter constitutes a large part of the costs of a variablespeed turbine (driven either by wind or ocean energy system) and is often required in order to conform to stringent grid codes imposed by transmission system operators (TSOs). While the addition of these components assure compliance they have an impact on the overall reliability and, in an offshore environment, the reliability factor is paramount. A new approach which can be taken by the industry is to rethink the design of their offshore energy devices. In a “farm” like configuration, a different approach can be taken to make the farm compliant rather than involving each individual device. This approach can also be applied for any offshore renewable energy system using synchronous generators. Furthermore onshore locations could benefit from this configuration especially when remote. The performance of the new approach is analyzed, while general guidelines and recommendations imposed by the industry are applied in the analysis. By analyzing the results produced by the simulation model the guidelines for efficient synchronization and load sharing are presented. The simulation model is used to simulate generator paralleling, electromagnetic torque analysis and load transients. A scaled down prototype Wind Farm (WF) was also constructed and its results analyzed and compared to the simulation model. Practical measurements and observations are highlighted and analyzed. Wind speed is entered in the model to simulate behavior of the new approach in different conditions. Fault ride through and ride through capabilities of the model are also partially studied. en_US
dc.language.iso eng en_US
dc.publisher University of Limerick en_US
dc.subject permanent magnet sychronous generators (PMSG) en_US
dc.subject power converters en_US
dc.subject load sharing en_US
dc.subject electromagnetic torque en_US
dc.subject wind turbine design en_US
dc.subject offshore renewable energy systems en_US
dc.subject synchronization en_US
dc.title Direct interconnection of offshore electricity generators en_US
dc.type info:eu-repo/semantics/doctoralThesis en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.supercollection ul_theses_dissertations en_US
dc.rights.accessrights info:eu-repo/semantics/closedAccess en_US

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