REVIEW OF THE APPLICATION OF BIDIRECTIONAL BLADES IN HORIZONTAL AXIS TIDAL TURBINES
ABSTRACT
Currently, there are three main approaches to solving the problem of bidirectional power generation from ocean currents: utilizing variable pitch mechanisms, passive yaw systems and specially designed bidirectional rotors. Bidirectional rotors can directly harness bidirectional ocean currents. Although the performance of bidirectional blades is inferior to that of unidirectional blades, their simple structure, low cost, and high reliability confer unique advantages in certain scenarios. Numerous research team are dedicated to improving blade design and manufacturing processes to enhance their efficiency and performance. This article reviews their contributions and points out that bidirectional blades have unique applications in certain marine energy sectors and will become an important component of renewable energy technology.