Desenvolvimento de uma bancada de testes para microinversores utilizados em sistemas fotovoltaicos.

• Ano de defesa: 2019
• Autor(a) principal: PEREIRA, Adan Miller Agostinho.
• Orientador(a): BRITO, Nubia Silva Dantas. , SOUZA, Benemar Alencar de Souza.
• Banca de defesa: JUNIOR, Damásio Fernandes. , LIRA, George Rossany Soares.
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Campina Grande
• Programa de Pós-Graduação: PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA
• Departamento: Centro de Engenharia Elétrica e Informática - CEEI
• País: Brasil
• Palavras-chave em Português: Sistemas Fotovoltaicos Conectados À Rede; Microinversor; Qualidade da Energia Elétrica; Photovoltaic Systems Connected to the Grid.; Quality of Electric Power; Microinverter
• Área do conhecimento CNPq: Engenharia Elétrica
• Link de acesso: http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/26773

We present the development of a test bench capable of reproducing real scenarios of operation of photovoltaic systems connected to the grid with microinverters and performing conformity tests on photovoltaic inverters according to current regulatory procedures. A performance comparison was also made between two microinverters, one of which is not certified by Inmetro, subjected to variations in the voltage of the network. The test bench developed was composed of: a programmable AC source, which allowed the reproduction of interruptions, overvoltages and undervoltages typical of an electrical network; an electronic AC load capable of simulating loads with different characteristics; two commercial microinverters connected to their respective 250 Wp photovoltaic modules. Obtaining the parameters related to Quality of Electric Power and capture of voltage and current waveforms was carried out using a Class A Electric Power Quality meter. According to the results obtained, it was concluded that: the test bench developed in this research can be used in inverter compliance tests, provided that a photovoltaic array simulator is inserted, so that there is the possibility of reproducing the different levels of DC power required by the tests; the different characteristics of the load did not impact the performance of the photovoltaic system; the microinverter that does not have Inmetro certification presented a lower performance compared to the certified microinverter and did not operate in accordance with current regulations on voltage variations; the non-linear load adopted, together with the sinusoidal shape of the current of the microinverters, significantly distorted the current of the electrical network.