Copper bar module for rotor coil of large air-cooled generator

• Main Authors: GU XINMEI, PU SIWEI, QIN ZHEN, ZHENG YIFAN
• Format: Patent
• Language: Chinese; English
• Published: 16.05.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

The copper bar module for the rotor coil of the large air-cooled generator comprises long-strip-shaped copper bars and epoxy glass cloth plates bonded to the two side faces of the copper bars in the thickness direction, the multiple copper bars are stacked in the thickness direction, and ventilation holes penetrating through the copper bars in the thickness direction are formed in the copper bars. A plurality of ventilation holes are arranged at equal intervals along the extension direction of the copper bar, a plurality of through holes are formed in the epoxy glass cloth plate, the ventilation holes in the copper bar correspond to the through holes in the epoxy glass cloth plate on the two sides of the copper bar in a one-to-one mode and are communicated with each other, and a cooling air channel penetrating through the copper bar module along the thickness direction can be formed in the copper bar module. When the copper bar module rotates along with the rotor coil, the air flow in the cooling air duct can