A METHOD OF PRODUCING TURBO GENERATOR (TG) STATOR WITH WINDING COMPOSED OF END CONNECTIONS IN DOUBLE ROEBEL BARS AND A TURBO GENERATOR STATOR PRODUCEDTHEREOF

摘要

This invention relates to a method of producing turbo generator stator with winding composed of end connection in Double Roebel bars and TG stator produced thereof comprising of making split between two turns of each top and bottom bar each turn having several insulated copper strips being Roebel transposed for 360 degrees; maintaining the split turns circumferentially and axially displaced from each other on connection side to facilitate gaps between two eye connections; constructing eye joints with strips to strip resistance brazing to minimize the eye joint copper losses during machine operation; constructing eye joints on the non-connection side in two tier by maintaining outer turn of an eye joint above the inner ore; providing eye joints on the connection side of the stator twice the number of those of the slots, but making the total extent of eye brazing same as number of slots, to form a double Roebel bar wound stator with optimized machine size with higher terminal voltage and lesser magnetic loading due to optimal size of the core and higher P/W (power / weight) ratio of the machine.