doctoralThesis
Modelagem e análise de impacto harmônico de um gerador de indução do tipo gaiola de esquilo interconectado à rede elétrica e acionado por um regulador eletromagnético de frequência
Fecha
2021-09-30Registro en:
SILVA, Juliano Costa Leal da. Modelagem e análise de impacto harmônico de um gerador de indução do tipo gaiola de esquilo interconectado à rede elétrica e acionado por um regulador eletromagnético de frequência. 2021. 83f. Tese (Doutorado em Engenharia Elétrica e de Computação) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2021.
Autor
Silva, Juliano Costa Leal da
Resumen
The power quality analysis is an essential issue in the integration of distributed energy
resources to the grid. Recent standards regulate the harmonics disturbances due to the
increasing penetration of intermittent energy sources interconnected with the grid employing power converters. This paper aims to analyze the power quality of an interconnected wind turbine system based on a Squirrel Cage Induction Generator (SCIG) driven
by an Electromagnetic Frequency Regulator (EFR). The steady state of the EFR harmonic
model is developed in the stationary frame based on the conventional induction generator
modeling, which allows the study of the harmonic disturbances in the electrical and mechanical variables due to the PWM inverter of the EFR’s armature voltage. There is no
electrical connection between the EFR and SCIG, and the results show that the inherent
system inertia contributes to the mitigation of the harmonic content at the grid side generated by the switching. In addition to the steady-state results, the Total Rated Distortion
(TRD), which considers the harmonics and interharmonics components, was computed
and presented a good performance compared to the IEEE 1547 standard and real data
extracted of a single Doubly Fed Induction Generator (DFIG). Finally, the harmonic performance of the proposed system was evaluated considering the impact of the equivalent
Thevenin impedance of the grid at the Point of Common Coupling (PCC).