Now showing 1 - 10 of 41
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Quadratic Buck–Boost Converter With Zero Output Voltage Ripple at a Selectable Operating Point

2019 , Mayo Maldonado, Jonathan , Jesus E. Valdez-Resendiz , Pedro M. Garcia-Vite , Rosas-caro, Julio , M. del Rosario Rivera-Espinosa , Valderrabano-Gonzalez, Antonio

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Output feedback dynamic tracking excitation control of synchronous generators

2016 , Francisco Beltran‐Carbajal , Antonio Favela‐Contreras , Irvin Lopez‐Garcia , Valderrabano-Gonzalez, Antonio , Rosas-caro, Julio , Victor Manuel Sanchez‐Huerta

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Adaptive Neural Trajectory Tracking Control for Synchronous Generators in Interconnected Power Systems

2022 , Ruben Tapia-Olvera , Francisco Beltran-Carbajal , Valderrabano-Gonzalez, Antonio

The synchronous generator is one of the most important active components in current electric power systems. New control methods should be designed to guarantee an efficient dynamic performance of the synchronous generator in strongly interconnected nonlinear power systems over a wide range of variable operating conditions. In this context, active suppression capability for different uncertainties and external disturbances represents a current trend in the development of new control design methodologies. In this paper, a new adaptive neural control scheme based on differential flatness with a modified structure including B-spline Neural Networks for transient stabilization and tracking of power-angle reference profiles for synchronous generators in interconnected electric power systems is introduced. These features are attained due to the advantages extracted of these two approaches: (a) a control design stage based on a power system model by differential flatness and (b) an adaptive performance using a correct design of B-spline Neural Networks, minimizing parameter dependency. The effectiveness of the proposed algorithm is demonstrated by simulation results in two test systems: single machine infinite bus and an interconnected power system. Transient stability and robust power-angle reference profile tracking are both verified.

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Corrigendum to “Quadratic buck–boost converter with positive output voltage and continuous input current for PEMFC systems” [Int J Hydrogen Energy 42 (2017) 30400–30406]

2018 , Rosas-caro, Julio , Victor M. Sanchez , Jesus E. Valdez-Resendiz , Mayo Maldonado, Jonathan , Francisco Beltran-Carbajal , Valderrabano-Gonzalez, Antonio

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Output feedback control of a mechanical system using magnetic levitation

2015 , F. Beltran-Carbajal , Valderrabano-Gonzalez, Antonio , Rosas-caro, Julio , A. Favela-Contreras

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DC-DC multiplier boost converter with resonant switching

2015 , Rosas-caro, Julio , Mayo Maldonado, Jonathan , Valderrabano-Gonzalez, Antonio , Francisco Beltran-Carbajal , Juan Manuel Ramirez-Arredondo , Juan Ramon Rodriguez-Rodriguez

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Power quality improvement by interleaving unequal switching converters

2016 , Arias-Angulo Juan Pedro , Rosas-caro, Julio , Beltran-Carbajal Francisco , Valderrabano-Gonzalez, Antonio , Haro-Sandoval, Eduardo , Gutiérrez-Alcalá, Salvador , Alejo-Reyes, Avelina , Garcia-Vite Pedro Martin

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A Double Dual Boost Converter with Switching Ripple Cancellation for PEMFC Systems

2020 , Carlos A. Villarreal-Hernandez , Javier Loranca-Coutiño , Mayo Maldonado, Jonathan , Jesus E. Valdez-Resendiz , Pedro M. García-Vite , Valderrabano-Gonzalez, Antonio , Rosas-caro, Julio

This paper presents a current-based control for a proton-exchange membrane fuel cell using the so-called double dual boost topology. In particular, we introduce a discrete time controller that, in coordination with a particular selection of inductors and capacitors, minimizes the switching ripple at the input port (current ripple) and the output port (voltage ripple) of the double dual boost converter. This converter has a particular characteristic, in contrast to the classical interleaved boost topology, in the double dual boost, the phases of the converter can have different duty ratios. The freedom to choose the duty ration for each phase can be used to select the operative point in which the input current is equal to zero. However, if individual controllers are used for each branch of the converter, the equilibrium after a transient can differ from the minimum ripple operation point; the proposed scheme regulates the output voltage and, at the same time, ensures the equilibrium remains in the minimum ripple operation in steady state. In this way, the converter can mitigate the harmonic distortion on the current extracted from the proton-exchange membrane fuel cell, which is beneficial to improve the efficiency and lifetime of the cell, and on the output voltage delivered to an output direct current bus. The results of the experiment are presented to validate the principles of the proposed system.

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Double Dual High Step-Up Power Converter with Reduced Stored Energy

2023 , Robles-Campos, Héctor R. , Valderrabano-Gonzalez, Antonio , Rosas-caro, Julio , Hossam A. Gabbar , Bhanu Babaiahgari

This paper introduces a dual-switchhigh step-up DC-DC power converter. The proposed converter features a high step-up voltage gain, relatively low cumulative stored energy over its inductors, low voltage stress on the active switches, and high efficiency, even at a relatively high duty ratio. An assessment of the proposed converter against conventional boost and a high step-up power converter is presented in terms of steady-state time, voltage gain, stored energy over its inductors, and efficiency. The assessment shows a reduction of 81.25% and 62.5% of stored energy in inductors to comply with the same operational conditions. Simulation and experimental results are provided to validate the benefits of the proposed dual-switch high step-up power converter.

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Quadratic buck–boost converter with positive output voltage and continuous input current for PEMFC systems

2017 , Rosas-caro, Julio , Victor M. Sanchez , Jesus E. Valdez-Resendiz , Mayo Maldonado, Jonathan , Francisco Beltran-Carbajal , Valderrabano-Gonzalez, Antonio