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
Now showing 1 - 10 of 17
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Item type:Publication, Power Converter Design for Pulsed Electric Field-Based Milk Processing: A Proof of Concept(MDPI AG, 2025-06-21); ; <jats:p>The microbiological safety of milk can be ensured through heat processing; however, this method has a negative effect on the sensory profile of this food product. Emerging technologies could be used as an alternative process for guaranteeing innocuity and maintaining sensory changes. An alternative is to evaluate pulsed electric field (PEF) electroporation, which is a method of processing cells using short pulses of a strong electric field. PEF has the potential to be a type of alternative low-temperature pasteurization process that consists of high-frequency voltage pulsations. Specifically, the presented work is a proof of concept for the design of a converter capable of generating a PEF to feed a load that meets the impedance characteristics of milk. The proposed converter is simulated using PLECS software (4.9.6 version) under impedance change scenarios that emulate variations in milk throughout the entire process. This research proposes the modification of a classic Vienna rectifier (adding an MBC—Multilevel Boost Converter structure) to supply a pulsating signal that could be used for low-temperature processes of milk to guarantee proper pasteurization. The characteristics of the generated high-voltage pulse make it feasible to quickly process the real sample. The control law design considers a regulation loop to achieve a voltage in the range of kV and a switching-type control law that activates switches in MMC arrays. These switches are activated randomly to avoid transients that cause significant stress on them.</jats:p> - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Stability Analysis of Interconnected Power Systems using the Lyapunov Criterion.(IEEE, 2024-10-20); J.M. López-Cruz - 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.21 - 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 33 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, High Gain Boost Converter with Reduced Voltage in Capacitors for Fuel-Cells Energy Generation Systems(2020)Scopus© Citations 10 38 2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, 5 1 - 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>Scopus© Citations 4 19 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Data-Driven Based Control Applied to DC Network Converters for Voltage Bus Stabilization(2020); 11 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Current-Mode Controller For an HB-NPC Inverter Using the Virtual-Ground Trajectory for Power Injection in PV Systems(2020)17 1