COMPUTATION OF THE TURBOGENERATOR END-REGION FIELD USING THE BEM

The Boundary Element Method has been adapted to the 2 D electromagneti c field analysis in the piece-wise homogeneous regions described by th e Laplace, Poisson and Helmholtz partial differential equations. Two s ubregions described by the Helmholtz equation have been introduced. Th e axial component of the magnetic flux density on the surface of turbo generator end laminations has been calculated using the above approach . The copper electromagnetic shield is placed between the clamping rin g and pressure fingers in the afore-mentioned turbogenerator and the c onducting elements has been considered as the Helmholtz subregions. Th e numerical results have been compared with measured ones.