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GRID CONNECTION FOR WAVE POWER FARMS
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| Author(s) |
Marcos BLANCO, Marcos LAFOZ, Dionisio RAMÍREZ |
| Abstract |
Linear generators used as direct-drive solution in wave energy conversion have the main advantage ofhigher efficiency and more simple and robust system. However there are some important drawbacksthat should be solved to increase the reliability and feasibility. This paper will study in detail theproblem of the power oscillation introduced intro the electric grid due to the zero speed point at theend of the stroke. Four different solutions are analyzed: first option is to plan the distribution of thepoint absorbers in the wave farm considering the most predominant wave period; second is to controlthe device by means of supplying some reactive PTO force in order to get a more reduced poweroscillation, maintaining a compromise with the resonance situation which is desired to get themaximum energy transference; third consists on controlling the system with a hybrid strategy thatincludes a DC-link voltage control and direct power control; and finally the fourth solution consists onthe addition of energy storage systems, independent of the generator to absorb and develop the excessand defaults of energy. Some of the solutions can be implemented together and the benefits of theresulting system increase. |
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| Filename: | 0417-epe2011-full-23165697.pdf |
| Filesize: | 542 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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