Control of Electromagnetic Forces on Stator Windings of Large Turbine-Generators

In the past 20 years there has been a dramatic increase in kVA ratings of large turbine-generators, accompanied by a parallel increase in the electromagnetic forces acting on the stator windings. This has created an industry-wide problem of providing a stator winding support system which is capable of adequately restraining these forces to avoid impairment of machine reliability.