Renewable energy is a naturally available source in nature, including wind, bioenergy, geothermal heat, solar radiation, flowing and high-drop water, as well oceanic motion temperature changes. Planning for the Micro Hydro Power Plant (PLTMH) Yeh Dikis Banjar Lebah, Tabanan Regency, utilizes an AC generator one of ways renewable can be utilized. The literature review observation methods were em...

The hydro turbine dynamics have a considerable influence on the dynamic stability of power system. In the study of dynamic stability, the system is modeled by the linear differential equations (small  signal analysis). Small signal stability of power systems is needed in all conditions and only is dependent on the conditions of power system performance before commotion occurrence. This paper pr...

This paper examines failure of helical gear in speed increasing gearbox used in the wind turbine generator (WTG). In addition, an attempt has been made to get suitable gear micro-geometry such as pressure angle and tip relief to minimize the gear failure in the wind turbines. As the gear trains in the wind turbine gearbox is prearranged with higher speed ratio and the gearboxes experience shock...

The need for electrical energy in Nehibe village is currently increasing along with the increase population and new households. demand electricity this reaches 18 kW, an average power per household of 450 VA. problem that Hachakwa Micro Hydro Power Plant (PLTMH), which very close to village, has a capacity only 10 kW. Based on problem, study aims design peltor turbine two nozzles 26 kW PLTMH. T...

the aim of this study is designing the impeller of a centrifugal compressor in order to supply pressure ratio for a 65 kw micro gas turbine. first, the primary thermodynamic analysis has been conducted for the considered cycle using a home made code. herein, the compressor pressure ratio was considered to be 4. the obtained thermal efficiency was 25.64%. then, the design of micro compressor in ...

The primary goal of the this paper is to summarize field demonstrations of the feasibility of detecting changes in blade and shaft natural frequencies (such as those associated with a blade or shaft crack) on operating machinery using non-contact, nonintrusive measurement methods. Laboratory demonstration of feasibility and some special signal processing issues were addressed in Parts 1 and 2 [...

A comprehensive review of fatigue behavior and fatigue design of heavy section wind turbine castings made of ductile iron EN-GJS-400-18-LT is performed. Common metallurgical defects that are affecting fatigue behavior of this material were studied. Review of different researches on quantitative effect of chunky graphite and micro structure on fatigue behavior of EN-GJS-400-18-LT was perform...

This paper deals with a multi-objective optimization of a novel micro solar driven combined power and ejector refrigeration system (CPER). The system combines an organic Rankine cycle (ORC) with an ejector refrigeration cycle to generate electricity and cold capacity simultaneously. Major thermodynamic parameters, namely turbine inlet temperature, turbine inlet pressure, turbine back pressure, ...

Self exited Induction generators are widely used in non conventional energy systems such as wind, micro/mini hydro, etc. The squirrel cage induction generator is simple, reliable, cheap, lightweight, ruggedness, and requires very little maintenance. This paper presents the self-excitation and modeling, steady-state, performance analysis and generating schemes of induction generators.

In a microgrid connected with both intermittent and dispatchable sources, intermittency caused by sources such as solar wind power plants can be balanced dispatching hydro into the grid. Both generation consumption are stochastic in nature, not known perfectly, require future prediction. The will cause grid frequency to drift away from required range. To improve performance, operation should op...