Examinando por Autor "Rosas-Caro, Julio C."

Mostrando1 - 2 de 2
  • No hay miniatura disponible
    Publicación
    Sólo datos
    Detailed Modeling of the Low Energy Storage Quadratic Boost Converter
    (IEEE Transactions on Power Electronics, 2021-10-17) López-Santos, Oswaldo; López Varón, Nicolás; Rosas-Caro, Julio C.; Mayo-Maldonado, Jonathan C.; Valdez-Resé, Jesús E.
    The low energy storage quadratic boost converter (LES-QBC) was recently proposed as an advantageous topology in terms of reduced output voltage ripple and fast dynamic response, besides high power density and reduced energy storage. The topological configuration can be exploited mainly through a 180° phase shift between the controlled switch gate signals. Nevertheless, this feature imposes a relevant challenge in terms of modeling, since traditional averaging an ripple estimation techniques cannot provide an accurate approximation to the actual switching dynamics of the converter. Motivated by this issue, in this article, we provide a complete quantitative analysis of both the steady-state and dynamic behavior of the LES-QBC, giving a fine understanding of their operation in continuous conduction mode when a pulse width modulator is used. The voltage gain, ripple factor, and dynamic behavior are modeled considering parasitic resistances and a wide operation range for the input voltage and the load. The demonstrated performance corroborates the high value of the converter for several applications in the industry. Every theoretical prediction is fully validated via simulations and experimental results.
  • No hay miniatura disponible
    Publicación
    Sólo datos
    Quadratic boost converter with low-output-voltage ripple
    (IET Power Electronics, 2020-06-17) López-Santos, Oswaldo; Mayo-Maldonado, Jonathan C.; Rosas-Caro, Julio C.; Valdez-Resendiz, Jesus E.; Zambrano-Prada, David A.; Ruiz-Martinez, Omar F.
    his study proposes a non-isolated quadratic boost converter (QBC) that features a low-output-voltage ripple with respect to traditional QBCs. This advantage is in contrast with other topologies that require a higher amount of stored energy by capacitors to achieve the same output-voltage ripple specification. This benefit permits to design a compact converter, since the size of capacitors is proportional to their energy storage rating. Moreover, the proposed transformerless topology is suitable for applications that require high-voltage gains as in the case of renewable energy applications. The main properties of the converter are corroborated as well as its advantages by providing mathematical models, analytical waveforms and experiments.