The Cross-Flow turbines cover from the point of view hydraulic power the
running domain of some well-known turbines such as Pelton, Francis or
Kaplan. This type of turbine has a simple construction, long life and low
execution cost, which makes it very suitable for on and off grid small to
medium hydro power plants. It is quite difficult to establish an exact
theoretical dynamic model for this type of turbines, due to the complex flow
phenomenon (bi phase flow water and air). In order to obtain the exact
dynamic behavior of the hydraulic machine, experimental dynamic
identification will be done. In automation, the dynamic properties,
represent the fundamental characteristic of the object which must be
regulated. When the dynamic properties of the regulated object are obtained
experimentally, we analyze the characteristics of the transient regime,
which appears because of the application at the system inlet of some
stochastic or deterministic signals (sine waves for our case). The hydraulic
turbine is modeled as an informational quadrupole having the inlet
parameters the movement of the wicket gate and the turbine head and outlet
parameters the torque and the speed. In this paper it will be presented the
frequency modelling of the cross flow turbine and the validation of the
mathematical model through experimental dynamic identification.
Performance of Double-step Savonius Rotor for Environmentally Friendly Hydraulic Turbine
