Electrical generators in ocean energy converters
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Publication date
2013-01-01
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Institution of Engineering and Technology
Abstract
This chapter provides an outline of the issues confronting the designer of an ocean energy converter (OEC) when selecting or designing the electrical generator and its associated control system. It is clear that, especially for wave energy converters (WECs), this is a complex problem due to the high variance in device power take-off (PTO) type, and indeed the functionality of the generator itself within the power chain. Specification and design of the generator system in tidal energy converters (TECs) have been reviewed and shown to be highly dependent on the device, turbine and current characteristics. Both squirrel cage induction generators (SCIGs) and permanent magnet synchronous generators (PMSGs) are promising generator technologies for application in TECs, showing individual advantages and disadvantages. As important as the choice of the generator technology are the concepts to deal with the special requirements of TEC devices like marine environment, submerged operation and extended maintenance intervals. A consistent requirement in both WEC and TEC system generators is the need for variable speed control and operation. In this context, the power converter technology and controller algorithms related to this need have been introduced.
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Publisher Copyright: © The Institution of Engineering and Technology 2014.
Keywords
Asynchronous generators , Asynchronous machines , Controller algorithms , Electrical generators , Maintenance engineering , Maintenance engineering , Marine engineering , Ocean energy applications , Ocean energy converters , Permanent magnet generators , Permanent magnet synchronous generators , Plant engineering, maintenance and safety , PMSG , Power converter technology power convertors and power supplies to apparatus , power convertors , Power take-off efficiency , PTO , Squirrel cage induction generators , Synchronous generators , Synchronous machines , Tidal energy system , Tidal power stations , Tidal power stations and plants , Wave energy converter , Wave energy systems , Wave power , Wave power plants , General Engineering , SDG 7 - Affordable and Clean Energy
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Citation
O’Sullivan , D , Bard , J , Kracht , P , Ceballos , S & Robles , E 2013 , Electrical generators in ocean energy converters . in Electrical Design for Ocean Wave and Tidal Energy Systems . Institution of Engineering and Technology , pp. 3-41 . https://doi.org/10.1049/PBRN017E_ch2