METHOD FOR PRODUCING CORONA DISCHARGE-PREVENTING STRUCTURE, CORONA DISCHARGE-PREVENTING STRUCTURE, AND ROTATING ELECTRICAL MACHINE

A method for producing a corona discharge-preventing structure for covering the outer surface of a to-be-insulated object is presented. The method comprises: a tape producing step (S10) of producing a corona discharge- preventing tape including a macromolecular polymer added with an electrically conductive powders and non-electrically conductive nanoparticles; a main insulating step (S20) of winding a main insulating tape around the to-be-insulated object; and a winding step (S30) of winding the corona discharge- preventing tape around the outer surface of the to-be-insulated object around which the main insulating tape has been wound. The tape producing step (S10) may include: a mixture producing step (S11) of producing a mixture by adding the electrically conductive powder and the non-electrically conductive nanoparticles to the macromolecular polymer; a coating step (S12) of coating the mixture on a fiber-reinforced cloth; a heating-drying step (S13); and a cutting step (S14).