Affiliation:
1. UFU Federal University of Uberlândia Uberlândia Minas Gerais 38400‐902 Brazil
2. UFTM Federal University of Triânuglo Mineiro Uberaba Minas Gerais 38025‐180 Brazil
3. UNIUBE University of Uberaba Uberaba Minas Gerais 38055‐500 Brazil
Abstract
SummaryThis paper presents the development of a single‐phase voltage source inverter (VSI) of 3.5KW, applied to grid‐connected photovoltaic systems (GCPS). The proposed system has a boost interface converter connected to a full bridge inverter with an LCL filter. Each block that constitutes the proposed GCPS is described in detail, containing the specifications of the solar modules, the design of the power circuit components, the mathematical modeling, and the control design of the converters. The presentation of the Volt‐VAR Control (VVC) highlights the contribution of this work, where it is implemented with the intention of the inverter to supply/consume reactive power, in order to minimize voltage variations at the point of common coupling (PCC). To validate the inverter operation with VVC, three cases are presented, encompassing grid voltage and irradiance variations, and load steps. Through the PCC voltage profiles, currents, and power supplied/consumed, the means to demonstrate the effectiveness of the proposed control is shown. The results obtained through the PSIM simulations and verified by Typhoon Hardware in the Loop (HIL) model, showed the regulation of grid voltage levels for all established conditions.
Funder
Fundação de Amparo à Pesquisa do Estado de Minas Gerais
Universidade Federal de Uberlândia
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Conselho Nacional de Desenvolvimento Científico e Tecnológico