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Stator bar transposition is a key technology in the electromagnetic design of water-cooled turbo-generator. Transposition bars are located in the slot within the scope of different leakage magnetic fields, circulating current and additional loss are produced among the parallel strands connected by the end nose, which bring the local overheating and seriously affect the operation safety. In engineering,...
In hydro-generator, rotor end plate is one of the most important components, which is usually placed in the space between pole and the end of field winding, used to clamp the laminated pole and prevent the damping ring from flying off because of large centrifugal force. Generally, rotor end plate is made of 1Crl8Ni9Ti, forged steel and cast steel, which are either non-magnetic or magnetic material...
In large turbogenerators, the stator bars are made of several parallel strands which are connected together in end region. Because of the disparity of electromotive force between every two strands in the same bar, circulating current flows around a close-cycle and inevitably leads to useless circulating current losses, generating heat. Thus the transposition must be used in strands to avoid the circulating...
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