Corona discharge prevention structure manufacturing method, corona discharge prevention structure and rotary electric machine

摘要

The method for producing a corona discharge preventing structure covering an outer surface of an insulating object comprises a tape producing step (S10) for producing a corona discharge preventing tape in which a conductive powder and nonconductive nanoparticles are added to a polymer. A main insulation step (S20) of winding the main insulation tape around the insulation object, and a winding step (S30) of winding the corona discharge prevention tape around the outer surface of the insulation object wound around the main insulation tape Have. The tape manufacturing step (S10) includes a mixing agent generation step (S11) of adding conductive powder and nonconductive nanoparticles to a polymer polymer to form a mixing agent, and a coating step of applying the mixing agent to a fiber reinforced cloth It may have (S12), a heating and drying step (S13) and a cutting step (S14).