Emulação de carga para geração de energia elétrica usando inversor

Abstract

This paper aims to emulate variable load on a simulation bench for wind and hydraulic generation using an inverter connected to a fixed load consisting of a bank of resistances and inductances. From the modeling performed on the hydraulic and wind turbines, it is possible to reproduce the effects caused by variations in the dynamics of each generation, such as the variation in wind, for wind, or the flow of water in a distributor, for hydraulic . The generation simulation bench is composed of a separate excitation machine (DC motor), simulating the primary source, driven by a converter, which is coupled to a generator, this one feeding the inverter, which is responsible for the interface with the load. From this coupling of the motor-generator set, it is possible, through the inverter, to carry out the load variation, in order to simulate different load conditions in the generation. The inverter is used as a load variation strategy for dynamic response studies of simulated generation systems, voltage and frequency regulation, harmonic analysis in the system, among many situations. Through this set, it was possible to vary the generator armature current by properly configuring the inverter parameters. To complete the study, the look at table method is proposed for the proper selection of inverter parameters for load variation.