Because of the azimuth velocity generated in the wake behind the wind turbine, it rotates in the opposite direction to the upstream rotor. In order to gain an in-depth understanding of the basic physics of higher total power generation and better durability of wind turbines.Īlthough most wind turbines in modern wind farms are single-rotor wind turbine (SRWT) systems, the concept of a counter-rotating wind turbine (CRWT) system has been proposed in recent years. Recently, extensive experimental and numerical studies have been conducted to examine aerodynamics of wind turbines and wake interference among the multiple wind turbines. Therefore, how to increase the power generation of downstream wind turbines is one of the most important research topics in recent years. Based on the spacing and layout of the wind turbine array, it was found that the power loss of downstream turbines was up to 40% due to wake interference. In a typical wind farm, due to the upwind turbine wake interference, wind turbines located in the wake of upstream turbines will experience significantly different surface winds than wind turbines located upwind. A Doctor from Iowa State University and his team studied the effects of the relative rotation direction of two tandem wind turbines on power generation performance, flow characteristics in turbine wakes, and the effect of the resulting wind load on the turbine.

Wind energy is one of the most promising renewable energy sources in the world today.

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