Conversor CUK-BUCK ZCS para carregamento de bateria e suporte de cargas auxiliares de veículos elétricos

• Ano de defesa: 2019
• Autor(a) principal: Veras, Caio Kerson Oliveira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Engenharia elétrica; Acumuladores; Veículos elétricos; Battery charging; Quasi-resonant converter; Soft- switching ZCS
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/51299

This work proposes the study and development of a quasi-resonant family DC-DC converter for the electric vehicle (EV) battery charging stage. The topology is called Cuk-Buck ZCS and operates under zero current (ZCS). The main features of this converter are switching losses reducing, ability to operate at high switching frequency, weight and volume reduction. In addition, theoretical study is carried out through qualitative and quantitative analysis, besides the analysis of converting semiconductor losses. It is also proposed a variable frequency control strategy that guarantees the smooth switching characteristics proposed to the topology. The designs of the voltage and current control meshes are presented. Finally, the study is validated by means of simulation and experimental results in permanent and transient state for 200W converter, 12V input voltage and 48V output voltage. The results showed consistency among the developed models and the values obtained in partial simulation and experimental (open mesh).