'a stator slot wedge with corresponding stator slot for improved ventilation of heat from hydro generators'

摘要

A stator slot wedge with corresponding stator slot for improved ventilation of heat from hydro generators, the hydro generator at least comprising a stator having a stator core provided with a plurality of slots to accommodate corresponding number of conductive coils and bars made of copper wire and assigned for upper and bottom portions of the stator, the stator slots having insulating layers along the periphery and supported by slot wedges configured with plurality of grooves on both longitudinal edges at predefined intervals; a plurality of ventilation ducts installed to allow supply of cool air to dissipate the generated heat via the grooves of the slot wedges which forming a ventilation system, the improvement is characterized in that the slot wedge is constructed with continuous tapered along both the longitudinal edges; and the stator slots are correspondingly modified to increase in supply of cool air thereby improve dissipation of hot air from the hydro generator.