Metodologia de desenvolvimento de redes de relutâncias estáticas para geradores síncronos

Abstract

This work presents a design approach of reluctance networks in order to calculate the direct and quadrature axis reactances of salient pole synchronous machines. The calculation of these reactances is essential for the design of synchronous generators, as they are used to calculate the voltage drop due to the armature reaction, being essential to obtain the terminal voltage of the generator operating under load. There are three ways to calculate these reactances: finiteelement simulation, which requires a long processing time; analytical method, which presents low precision for machines with complex geometries; and reluctance network. There are few reluctance networks that present good accuracy for this purpose, mainly involving salient pole machines. For this reason, the reluctance networks developed in this work are intended to be simple, allowing easy reproduction; robust, representing machines with different dimensions; and accurate to provide adequate results. In addition, reluctance networks are more versatile than the finite element simulation method, as they are simpler to couple with optimization software. Obtained results were validated through electromagnetic simulation with finite element software. Finally, the methodology developed for the elaboration of reluctance networks for the calculation of direct and quadrature axis reactances can be ratified.