Investigação de estratégias de controle robusto multivariável descentralizado aplicadas à melhoria do desempenho de um conversor de potência CC/CC do tipo buck com estrutura single inductor multiple output

2018-07-182018-07-182018-02-05MEDEIROS, Renan Landau Paiva de. Investigação de estratégias de controle robusto multivariável descentralizado aplicadas à melhoria do desempenho de um conversor de potência CC/CC do tipo buck com estrutura single inductor multiple output. 2018. 135 f. Orientador: Walter Barra Júnior. Tese (Doutorado em Engenharia Elétrica) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2018. Disponível em: <http://repositorio.ufpa.br/jspui/handle/2011/10083>. Acesso em:.https://repositorio.ufpa.br/handle/2011/10083The DC/DC power converter systems are important devices to use in several applications in many sectors of the society. For this reason, several DC/DC converter topologies are developed to improve the performance of devices, aiming at reducing losses and improving the converter energy quality. However, such improvements should assess the control strategies that enable the correct functioning of the power converters. This works covers experimental assessment of the design of robust decentralized multivariable controller applied to a specific topology of the multivariable step-down power converter, where a single inductor element is shared by multiples outputs. Furthermore, it is important to ensure the system stability, as well as the multiple outputs regulations, however some difficulties remains, e.g., hard coupling between system’s outputs, non-linearities due to the inductive element and uncertainties due to imprecision of mathematical models and/or variation of nominal values of the discrete elements that compose the DC/DC converter. Aiming to assess the performance of the proposed design methodology for a multivariable robust controller, to perform experiments of parametric variations on the DC/DC power converter, it is developed several experimental tests and simulations using the Matlab. The results show the improved performance of the proposed methodology.Acesso AbertoControlador multivariável descentralizadoControle robustoConversor CC/CC multivariável do tipo BuckVariação paramétricaMultivariable robust controllerRobust controlStep-down multivariable power converterParametric variationInvestigação de estratégias de controle robusto multivariável descentralizado aplicadas à melhoria do desempenho de um conversor de potência CC/CC do tipo buck com estrutura single inductor multiple outputTeseCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::SISTEMAS ELETRICOS DE POTENCIASISTEMAS ELÉTRICOS DE POTÊNCIASISTEMAS DE ENERGIA ELÉTRICA