Horizontal axis wind turbine undergoes aerodynamic inefficiencies in the blade area due to many nonaerodynamic constrain which includes bareness of the blade, the gear box frictions, and the turbine. These
constrain lead to great loss of power output of the wind turbine. A novel diffuser augmented wind turbine
(DAWT) concept is adapted in this work which aims at mitigating these losses. Even though power production
by wind turbines falls short of the Betz limit, diffuser augmented wind turbine have power coefficient larger
than the Betz standard maximum coefficient of performance which is 0.59. The wind turbine system and the
adapted diffuser augmented system are modeled and simulated using the Simulink tool in MATLAB software.
Simulation results confirmed the increase in energy capture potential of the diffuser augmented wind turbine
with a maximum coefficient of performance of 0.64, an 8% improvement over the Betz limit.
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