The paper describes and analyses a hydropower system based on siphons in which the pressure of low-head water is converted into air pressure. The analysis suggests that, with careful design of the  ow passages to minimize losses, air-pumping efŽ ciencies of 70 per cent or more should be achievable; the overall efŽ ciency of the hydropower system should be better than 60 per cent. Although such...

Reset controllers are commonly used to smooth the transient response of systems. We use this technique to improve a standard baseline pitch controller for offshore wind turbines (WTs). The introduction of this strategy enhances the overall performance of the WT. In particular, the fore-aft and side-to-side accelerations of the WT tower are significantly reduced, whilst a steadier power output i...

The water turbine must be specially designed according to the calculation of its energy potential, proportional height falling and discharge. This research is conducted study solution fluid engine that functions as a pico hydro turbine, namely centrifugal blower with simple construction, operating at low head, small discharge, easy installation operation price. used in this test already on mark...

Hard particles as Quartz and Feldspar are present in large amount in most of the rivers across the Himalayan basins. In run-off-river hydro power plants these particles find way to turbine and cause its components to erode. Loss of turbine material due to the erosion and subsequent change in flow pattern induce several operational and maintenance problems in the power plants. Reduction in overa...

In the XFLEX HYDRO Vogelgrun demonstrator, a run-of-river hydropower plant, hybridization of one turbine-generator unit with battery energy storage system is being investigated. This paper describes integration methodology hybrid control algorithm without replacing existing speed governor unit. Furthermore, comparison performances non-hybrid and discussed, first experiences gained during operat...

Abstract In recent years and in many countries the economic development of distant regions is increasingly dependent on energy resources. This fact makes world scientific community pay more attention to renewable sources. Special paid solar, wind small hydropower for electrical consumers who have no possibility connect central power supply lines. that water resources financial support given mic...