As an abundant, clean, and predictable source of renewable energy, tidal current energy
provides a cost-effective alternative to fossil fuels. Tidal current energy harvesting …

One of the current biggest hurdles to harnessing renewable energy resources is their
intermittent nature. Hybrid energy conversion minimizes intermittency by diversifying energy …

Most small wind turbines do not have pitch adjustment of the blades. This makes starting at
low wind speed a serious challenge which is magnified by the drivetrain resistance caused …

A growing interest has been devoted to turbines with diffusers, which induce a pressure drop
downstream of the turbine to accelerate the fluid in the axial direction. This effect increases …

Drivetrain resistance of wind turbines is still challenging, since determining static and
dynamic frictional torque is rather complex. Hence, the main motivation of this work is to …

 e Brazilian hydrological information network does not provide data series of daily
velocities. e river velocities are important for the study of hydrokinetic potential. erefore …

In this study, a hydrokinetic turbine is designed for the high-altitude regions where local
electricity network lines are difficult to reach. If there was a stream flow around, electricity …

In recent years, the study on wind turbines for electricity generation has achieved significant
advances in the development of new formulations, analysis or even in efficiency. The growth …

Starting of small turbines is significantly affected by friction resistance of drivetrains. When
the effect of drivetrain is not considered in small turbine design, the rotor starting may be …

The Brazilian hydrological information network provides daily flow data; however, daily
velocity information is not available in historical series. The inventory of river velocities is …