A Study on Pitch Control Faults of Turbine Blades in Tidal Current Energy Converter System

Tidal current energy is a renewable energy that has the advantage of being predictable by generating power using periodic tidal movements. Because a tidal current energy converter system is installed underwater, maintenance costs are high, and a systematic review of various factors must be performed in advance. In this study, an integrated load analysis was performed to review the blade pitch control problem of tidal current energy converter system. The impact on system performance was analyzed in situations where blade angle adjustment was not possible. It was confirmed that when the blade pitch angle is fixed, the fluctuation range of system power increases above the rated flow speed, and it is found that power generation is difficult even at high speeds when one blade is fixed at the feathering angle. This study is expected to enhance the current understanding and provide a valuable reference for developing a horizontal axis turbine in a tidal current energy converter syste