Optimising Reactive Control in non-ideal Efficiency Wave Energy Converters
When analytically optimising the control strategy in wave energy converters which use a point absorber, the efficiency as- pect is generally neglected. The results presented in this paper provide an analytical expression for the mean harvested electri- cal power in non-ideal efficiency situations. T...
Published in: | Volume 9A: Ocean Renewable Energy |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Society of Mechanical Engineers
2014
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Subjects: | |
Online Access: | https://vbn.aau.dk/da/publications/3eef3c51-ccf3-4236-8fa3-23a0d974a94d https://doi.org/10.1115/OMAE2014-23005 http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1912137 |
Summary: | When analytically optimising the control strategy in wave energy converters which use a point absorber, the efficiency as- pect is generally neglected. The results presented in this paper provide an analytical expression for the mean harvested electri- cal power in non-ideal efficiency situations. These have been de- rived under the assumptions of monochromatic incoming waves and linear system behaviour. This allows to establish the power factor of a system with non-ideal efficiency. The locus of the optimal reactive control parameters is then studied and an alter- native method of representation is developed to model the opti- mal control parameters. Ultimately we present a simple method of choosing optimal control parameters for any combination of efficiency and wave frequency. When analytically optimising the control strategy in wave energy converters which use a point absorber, the efficiency aspect is generally neglected. The results presented in this paper provide an analytical expression for the mean harvested electrical power in non-ideal efficiency situations. These have been derived under the assumptions of monochromatic incoming waves and linear system behaviour. This allows to establish the power factor of a system with non-ideal efficiency. The locus of the optimal reactive control parameters is then studied and an alternative method of representation is developed to model the optimal control parameters. Ultimately we present a simple method of choosing optimal control parameters for any combination of efficiency and wave frequency. |
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