진동수주형 파력발전장치의 연간발전량 추정에 관한 연구

Abstract

In recent years, the global pursuit of carbon neutrality has accelerated research and development on renewable energy technologies. Among various wave energy conversion systems utilizing ocean wave power, the oscillating water column (OWC) type wave energy converter transforms wave-induced motion into the vertical oscillation of an internal water column, driving an air turbine through the resulting bidirectional airflow. To analyze the complex hydrodynamic interaction between the incident waves and the internal fluid subjected to turbine-induced pressure fluctuations, several numerical approaches have been proposed. However, these methods generally require extensive computational resources and validation efforts. In particular, the estimation of annual energy production (AEP) necessitates long-term simulations under a wide range of irregular sea states, which imposes significant limitations on design optimization using conventional time-domain methods. In this study, the linear superposition technique and response spectrum method are applied to evaluate the energy conversion performance of the OWC chamber efficiently. The effectiveness and applicability of the proposed approach for estimating annual energy yield are discussed, demonstrating its potential as a practical and computationally efficient tool for preliminary design and performance assessment of OWC-based wave energy converters.