... coefficient at the end winding bars of large hydro generators. These coefficients are needed for lumped parameter thermal models in the design process. Design/methodology/approach – The computational fluid dynamics simulation in combination with conjugate heat transfer (CHT) validates the accuracy...

... damageable parts for overheating in generators are the end winding bars, pole windings and stator ducts. Design/methodology/approach – The reduced model introduced is basically derived from the state-of-the-art pole section model (PSM) and enables faster computations for heat transfer and cooling...