Performance Improvement of pico-hydro power turbine using domestic technology

Although pico hydropower technology's potential for low-cost renewable energy, importing such technology into Thailand can be costly, primarily due to the absence of domestic manufacturers. This project aimed to develop a domestically produced 3 kW hydropower turbine system by enhancing the KIRIWONG hydro turbine to meet international standards. The project succeeded in creating a prototype that achieves a head of 100 m and a flow rate of 5.05 l/s, generating AC electricity at 230 V and 50 Hz. The system features stainless-steel Pelton turbine blades, a 3 kW 6-phase synchronous motor, and an aluminum casting turbine support base, among other components, achieving a water-to-electricity conversion efficiency of 60.5%. Economic analysis showed the system's viability with a payback period of 1 year and 4 months and a cost of energy at 0.26 THB/kWh, proving its competitiveness against small diesel generators and conventional electricity sources. This development not only highlights the project's success in producing a cost-effective, efficient hydropower solution but also its impact on the local hydropower community, leading to increased orders and improved access to sustainable energy solutions.