Ruiz-Martinez, O.F.
Main Affiliation
Preferred name
Ruiz-Martinez, O.F.
Official Name
Ruíz Martínez, Omar Fernando
ORCID
0000-0002-0853-4950
Researcher ID
G-7079-2018
Scopus Author ID
57212136157
17 results
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Item type:Publication, 29 - Some of the metrics are blocked by yourconsent settings
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Item type:Publication, Data-Driven Based Control Applied to DC Network Converters for Voltage Bus Stabilization(2020); 1 11 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Power shaping control of DC–DC converters with constant power loads(2020); Scopus© Citations 7 1 13 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, 13 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Nonlinear Stabilizing Control Design for DC–DC Converters Using Lifted Models(2021); 2 10Scopus© Citations 18 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Beyond Chaos in Fractional-Order Systems: Keen Insight in the Dynamic Effects(2024); ; María del Carmen Heras-Sánchez<jats:p>Fractional calculus (or arbitrary order calculus) refers to the integration and derivative operators of an order different than one and was developed in 1695. They have been widely used to study dynamical systems, especially chaotic systems, as the use of arbitrary-order operators broke the milestone of restricting autonomous continuous systems of order three to obtain chaotic behavior and triggered the study of fractional chaotic systems. In this paper, we study the chaotic behavior in fractional systems in more detail and characterize the geometric variations that the dynamics of the system undergo when using arbitrary-order operators by asking the following question: is the Lyapunov exponent sufficient to describe the dynamical variations in a chaotic system of fractional order? By quantifying the convex envelope generated by the 2D projection of the system into all its phase portraits, the changes in the area of the system, as well as the volume of the attractor, are characterized. The results are compared with standard metrics for the study of chaotic systems, such as the Kaplan–Yorke dimension and the fractal dimension, and we also evaluate the frequency fluctuations in the dynamical response. It is found that our methodology can better describe the changes occurring in the systems, while the traditional dimensions are limited to confirming chaotic behaviors; meanwhile, the frequency spectrum hardly changes. The results deepen the study of fractional-order chaotic systems, contribute to understanding the implications and effects observed in the dynamics of the systems, and provide a reference framework for decision-making when using arbitrary-order operators to model dynamical systems.</jats:p>10 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, 1 13 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Study on Multiple Input Asymmetric Boost Converters with Simultaneous and Sequential Triggering(2021); Alejandro Espinosa-Calderon<jats:p>Paralleled boost asymmetric configurations operating in discontinuous conduction mode (DCM) are suitable for integrating dissimilar green energy generating sources and control algorithms in versatile scenarios where voltage step-up, low cost, stable operation, low output ripple, uncomplicated design, and acceptable efficiency are needed. Unfortunately, research has mainly been conducted on the buck, sepic, switched-capacitor, among other asymmetric configurations operating in continuous conduction mode (CCM), to the authors’ knowledge. For asymmetric boost type topologies, achieving simultaneous CCM is not a trivial task, and other problems such as circulating currents arise. Research for interleaved converters cannot be easily extended to asymmetric boost topologies due to the dissimilarity of control algorithms and types of sources and parallel stages. This paper analytically establishes properties of stability, output ripple, output voltage, and design for asymmetrical paralleled boost converters operating in DCM with simultaneous or phase delayed (sequential) triggering. A 300 W experimental design and the respective tests allow validation of such properties, resulting in an easy-to-implement configuration with acceptable efficiency.</jats:p>1 11Scopus© Citations 4 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Quadratic Boost Converter with Optimized Switching Ripple Based on the Selection of Passive Components(2024); ; This work introduces a boost converter with quadratic gain. Its main advantage compared to well-known similar quadratic boost converters is that it requires capacitors with a relatively small capacitance and inductors with small inductance, leading to a reduction in the size or stored energy while performing a power conversion of similar power rating and the same switching ripples in both the input current and the output voltage. It is inspired by the recently introduced ISB converter and uses a specific PWM method. This results in achieving switching ripple constraints while using smaller energy storage elements (capacitors and inductors). The updated converter offers the same voltage gain compared to the conventional quadratic boost topology with the benefit of compact component sizes. While it has more passive elements, they are of reduced size. An analysis of energy storage revealed that this new converter uses only half the energy in inductors and 14% in capacitors when compared to specific design parameters.20