Installation of new generator wind deflector

Can deflector design improve turbine blade wind flow?

In recent years, various techniques for deflector installation and modified designs have been reported [ 22 ]. Many of these designs have been reported with validated simulations and have contributed to turbine blade wind flow improvements.

Can a wind deflector be installed between two vertical axis turbines?

Similarly to the design shown in Figure 9 reported by [ 78 ], they can be modified to install a wind deflector between two vertical-axis turbines, utilizing the accelerated wind speed in the near wake region from both sides of the deflector.

Why do we need wind deflectors for flow augmentation?

Installation of wind deflectors for flow augmentation helps to reduce the negative torque generated by the returning blades as well as enhance the positive torque by creating a diversion in the upstream wind towards the forwarding blade during operation.

What is a wind deflector?

A wind deflector can be of a very simple form such as a flat plate, or it can also be of an aerodynamic shape [ 73 ]. The geometry of the deflector significantly affects the power enhancement of VAWTs [ 74 ].

Does a flat plate deflector increase the power output of a wind turbine?

Qasemi et al. showed the effect of a flat plate deflector on the power output of a vertical axis wind turbine, and its C p - was increased by a factor of 16.42% with respect to the bare turbine. In contrast these studies, the present work using a deflector with a maximum improvement of around 20% provides a superior outcome.

Do wind deflectors improve rotor performance?

Wind deflectors in small wind turbines are installed to improve the static torque generated by the rotor; however, in large wind turbines, their applications improve the ventilation to enhance the thermal performance of the stator generator [ 67 ].