Providing ancillary services with wind turbine generators based on DFIG with a two-branch static converter

• Autor(a) principal: Morais, Ernande Eugenio Campelo
• Data de Publicação: 2019
• Outros Autores: Lima, Francisco Kleber de Araújo, Fonseca, Jean Marcos Lobo da, Castelo Branco, Carlos Gustavo, Machado, Lívia de Araújo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/69450
• topic: Wind power generation; DFIG; Ancillary services; Power quality; Reduced-Switches topology

This work aims to analyze and validate through mathematical modeling and experimental results, in a three-phase three-wire electrical system, the technical viability of a static power converter with a two-level topology with only two controlled branches (2L2B), operating as a grid-side converter (GSC) in a wind turbine generator based on a doubly fed induction generator (DFIG). With this reduced-switches topology, the GSC is able to regulate the DC-link voltage level from the generator back-to-back converter and provide ancillary services of harmonic filtering and reactive power compensation from linear/nonlinear loads connected to the point of common coupling. An 8-kVA experimental prototype was implemented in the laboratory to validate the proposal. The prototype control system was realized using the dSPACE DS1103 PPC Controller Board platform programmed via MATLAB/Simulink. The effectiveness of the proposed system is verified by comparing the results obtained with the 2L2B topology to the ones with the usual two-level three-branch topology.