Performance Evaluation Of Counter Rotating Vertical Axis Wind Turbine In Low Wind Speed Condition

Mohd Radzi, Adil Alimi (2019) Performance Evaluation Of Counter Rotating Vertical Axis Wind Turbine In Low Wind Speed Condition. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Performance Evaluation Of Counter Rotating Vertical Axis Wind Turbine In Low Wind Speed Condition.pdf - Submitted Version Download (342kB)

Abstract

In the present study, designing and development of counter rotating wind turbine (CRWT) has been studied experimentally. CRWT is a system where dual rotors of wind turbine are spinning or rotating in an opposite direction to one another. The type of CRWT system used in this study is Vertical Axis Wind Turbine (VAWT). Most of the existing VAWT has a poor self-starting and not be able to operate well in low wind speed condition. A Darrieus type (H-type) wind turbine has been chosen as the auxiliary rotor because of its longer blades that can generate highest power output. Meanwhile, a Savonius type (S-type) wind turbine is chosen because of its good selfstarting. Thus, a prototype model of Darrieus rotor and Savonius rotor has been established in this study to enhance the performace of the wind turbine at low wind speed and get more power. The main purpose of this study is to design a Hybrid CRWT that combine Savonius type and H-type system that can operate in low wind speed condition. The performance of proposed VAWT system in low wind speed condition in term of aerodynamics parameters such as RPM, torque input, torque coefficient and power coefficient has been investigated in this research through an experimental approach. The results from this study shows that S-type rotor can produce a maximum RPM at lower wind speed compare to H-type rotor. The mechanical torque input of this CRWT system is decreasing as the wind speeds increase since S-type rotor required less torque input to produce greater RPM compare to the H-type rotor. The development of this CRWT prototype model is expected to be used as alternative ways to generate electric power in rural or urban area that has wind speed range as low as from 2 m/s.

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