| Autor: |
Alexandros S. Zymaris, Benson Waldron, Nikolaos M.P. Kakalis, Claudio Bittencourt |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Volume 6: Ocean Space Utilization; Ocean Renewable Energy. |
| DOI: |
10.1115/omae2016-54921 |
| Popis: |
The pre-commercial development of the tidal energy sector is characterized by a diverse range of technology concepts. Within the spectrum of proposed and developed solutions the three-bladed Horizontal Axis Tidal Turbine (HATT) is one of the more dominant configurations. However, even within this “narrow” classification technology developers have chosen different design solutions and strategies. Major influences on design decisions are the maintenance and repair costs and their impact on Levelised Cost of Energy (LCOE); therefore it is critical to accurately determine reliability to support the engineering and financial decision making. This paper is based upon work done to develop techniques for the reliability analysis of tidal turbines Power Take Off (PTO) systems and proposes a simulation tool for improved reliability prediction. In brief the proposal is to utilize available methodologies and software to demonstrate how the different loading and environmental conditions experienced in tidal impact on PTO reliability. The approach utilizes a system engineering model of the powertrain augmented with physics-of-failure models. Using available surrogate reliability data and the output from the systems engineering modelling a modified probability of failure for a system or component can be generated. The model is capable to simulate the system under nominal, off-design and faulty conditions. By utilizing this approach, the reliability of the turbine can be quantitatively analyzed taking into account realistic operating conditions. An indicative case-study is presented to demonstrate the proposed approach. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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