Análise de falhas em inversores elétricos da usina fotovoltaica localizada no município de Tubarão/SC

• Autor(a) principal: Silva, Julio Oliveira da
• Data de Publicação: 2018
• Outros Autores: Augusto, Leandro de Abreu
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Universitário da Ânima (RUNA)
• Texto Completo: https://repositorio.animaeducacao.com.br/handle/ANIMA/4186
• topic: Energia solar; Inversores elétricos; Eletrônica de potência; Engenharia elétrica

In electric power systems, particularly in the generation of photovoltaic energy, the best results for the energy produced are obtained through minimized cost and/or maximized efficiency. For this cost-benefit ratio is enhanced, it is also important to employ methodologies that optimize the commitment to achieve the useful life of the equipment of a photovoltaic system. Photovoltaic systems are considered low maintenance, but are not free from faults. The Sun, despite its temporal intermittence on the surface of our planet, is an excellent and reliable source of energy, however, photovoltaic systems must be designed and operated with care to capture the highest convertible potential. One of the vital equipment in this process are the electric inverters, whose main purpose is to convert direct current, supplied by the generator modules, into alternating current, to allow the connection to the electric grid. However, in addition to intrinsic faults, external factors related to the generation process can cause damage to the electric inverters, such as: harmonics in the power grid, damaged cables, loose mechanical parts in the support structures, overheated connections in the inverter or distribution and faults in the grounding system. This study aims to analyze events and identify possible causes that may cause failures in the operation of photovoltaic plant inverters, located in the city of Tubarão/SC, in order to reduce the rate of defects and the constraints associated with design specifications. The proposal is presented in detail, including laboratory data from a batch of electric inverters.