Horizontal Axis Multi-Blade Wind Power Plant: a Case Study in Talang, Solok Regency

Abstract

This study investigates the design and performance of a multi-blade horizontal axis wind turbine as an alternative energy source in Talang, Solok Regency. The main objective is to develop a wind power generator capable of operating efficiently under the low wind speed conditions typical of the Talang area, while contributing to local electricity supply. The research methodology includes six months of field wind speed measurements at multiple hub heights to establish the wind profile, analysis of regional meteorological data, prototype design with considerations of blade number, pitch angle, and rotor diameter, and evaluation of turbine performance in terms of electrical output, power coefficient, start-up (cut-in) speed, and operational stability under varying wind and load conditions. The results show that with an optimized multi-blade configuration, the turbine achieves cut in at approximately 4-5 m/s, delivering average electrical output within ±10% of the predicted values. Efficiency levels are deemed satisfactory for local deployment, with the turbine maintaining stable operation across wind speed and load variations. Innovations include the adaptation of blade geometry suitable for low-speed wind, use of cost-effective materials, and design for low maintenance. This case study demonstrates that multi-blade horizontal axis wind turbines are viable for regions like Talang with modest wind resources. Recommendations highlight further refinement of blade design and integration of control systems for enhanced consistency and scalability in rural or remote settings.