A new monitoring method for determination of average hydrogenerator field winding temperature is introduced in order to increase the robustness measurement system using classic U-I method. The approach prone error due brush voltage drop, especially when low. Developed thermal model based on current and cold cooling air measurements, as well temperatures acquired from digital sensors mounted acr...

a numerical investigation of forced convection in a channel with hot solid block inside a square porous block mounted on a bottom wall was carried out. the lattice boltzmann method was applied for numerical simulations. the fluid flow in the porous media was simulated by brinkman-forchheimer model. the effects of parameters such as porosity and thermal conductivity ratio over flow pattern and t...