Estudo e desenvolvimento de inversores multiníveis para aplicações em redes inteligentes de distribuição de energia elétrica

Author(s)

Tiago Davi Curi Busarello

• Document type: Doctoral Thesis
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação
• Defense date: 2015-09-10

Examining board members

José Antenor Pomilio; Helmo Kelis Morales Paredes; Lourenço Matakas Junior; Flávio Alessandro Serrão Gonçalves; Marcelo Gradella Villalva; Walmir de Freitas Filho

• Advisor: José Antenor Pomilio

Abstract

Distributed generation systems have become common along the last years due to the development of renewable energy sources. Additionally, storage technologies and their respect power converters have been added into the system in order to store and to supply energy in suited moments. By aiming the reliability, uninterrupted supplying, efficiency and stability, centralized controllers were implemented in distributed system, making them to be entitled smart-grids. Such controllers manage the operation modes of the system generators and converters. This thesis presents a research project covering the study and development of multilevel converters for applications in intelligent distribution systems. The study approaches the cascaded symmetrical and asymmetrical topologies, indicating the main concepts about the structure, the modulation, the power distribution across the modules, the output filter and the current and voltage controllers, among others. Afterwards, the thesis proposes an Interactive Battery-Based Storage system. The interaction makes the storage to be able to perform ancillary functions and to operate coordinately with centralized and local controllers. Decisions on the operation mode are taken based on specific rules. Additionally, a synergistic operation is achieved when the Interactive Battery-Based Storage works with another intelligent power device. Concepts about micro and smart-grids are also presented in order to clarify how the proposed intelligence contributes to the smart-grid realization. The efficacy of the study and the proposed IBBS were verified through simulation and experimental results (AU)

• FAPESP's process: 12/23914-5 - Study and Development of Multilevel Inverters for Distribution Smart-Grids
• Grantee: Tiago Davi Curi Busarello
• Support Opportunities: Scholarships in Brazil - Doctorate