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Computationally Efficient Finite-Element-Based Methods for the Calculation of Symmetrical Steady-State Load Conditions for Synchronous Generators

This paper presents an accurate and computationally efficient finite-element calculation and modeling methods for the simulation of symmetrical steady-state load conditions for synchronous generators. For that purpose two iterative methods are presented, implemented and compared. Those are Newton’s iterative method and the relaxation parameter iterative method, which were both applied to magneto-static and transient finite-elements simulations. Various methods for obtaining armature voltage and power angle are proposed and analyzed from the computational efficiency and the accuracy point of view. All methods showed good convergence results for solving this particular problem. Calculation results were compared with measurements on two synchronous generators installed in power plants

synchronous generator; finite-element method; steady-state; load; computationally efficient

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