The increasing demand for energy and the concerns regarding environmental protection have been driving forces toward exploitation of renewable sources as a better alternative compared to conventional sources. Furthermore, enable an independent supply isolated locations or communities that lack access main electricity grid, additionally, they offer possibility use available beneficial individual...

The Francis hydro-turbine generator unit (FHTGU) is a typical nonlinear system with the coupling hydraulic, mechanical and electric subsystems. It challenge to understand reasons for its operational failures because major reason involves complex interactions of three Subsystems’ model interaction method normal forms has been well developed investigated, overcoming linear methods used in FHTGU’s...

Hydropower offers highly flexible, low-carbon generation that can be used to balance electricity grids with high levels of wind and solar penetration. This will become increasingly important as the energy transition unfolds. However, hydropower faces several problems when in a fast manner (on order seconds) part-load, overload, or transient conditions. Some these issues may addressed by an impr...

Abstract. A multi-body dynamical model of a wind turbine power generation system (WTPGS) based on hydromechanical hybrid transmission (HMHPT) technology is developed and simulated to overcome the individual drawbacks gear train hydrostatic (HPT) system. The HMHPT concept single-stage planetary (SSPGT) typical HPT. input shaft SSPGT coupled with rotor, whereas output hydraulic pump. pump supplie...