Now showing 1 - 10 of 113
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A Symmetric Sixth-Order Step-Up Converter with Asymmetric PWM Achieved with Small Energy Storage Components

2024 , Dueñas García, Iván , Rosas-Caro, Julio , Robles-Campos, Héctor R. , Posada, Johnny , Valdez-Resendiz, Jesus E. , Valderrabano-Gonzalez, Antonio , Gabbar , Hossam A. , Bhanu Babaiahgari

This research explores an improved operation of a recently studied converter, the so-called two-phase sixth-order boost converter (2P6OBC). The converter consists of a symmetric design of power stations followed by an LC filter; its improved operation incorporates an asymmetric pulse width modulation (PWM) scheme for transistor switching, sometimes known as an interleaved PWM approach. The new operation leads to improved performance for the 2P6OBC. Along with studying the 2P6OBC, one of the contributions of this research is providing design equations for the converter and comparing it versus the interleaved (or multiphase) boost converter, known for its competitiveness and advantages; the single-phase boost topology was also included in the comparison. The comparison consisted of a design scenario where all converters must achieve the same power conversion with an established maximum switching ripple, and then the stored energy in passive components is compared. Although the 2P6OBC requires a greater number of components, the total amount of stored energy is smaller. It is known that the stored energy is related to the size of the passive components. Still, the article includes a discussion of this topic. The new operation of the converter offers more streamlined, cost-effective, and efficient alternatives for a range of applications within power electronics. The final design of the 2P6OBC required only 68% of the stored energy in inductors compared to the multiphase boost converter, and 60% of the stored energy in capacitors. This result is outstanding, considering that the multiphase boost converter is a very competitive topology. Experimental results are provided to validate the proposed concept.

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Data-Driven Passivity-Based Control Design for Modular DC Microgrids

2022 , Javier Loranca-Coutino , Mayo Maldonado, Jonathan , Gerardo Escobar , Thabiso M. Maupong , Jesus E. Valdez-Resendiz , Rosas-caro, Julio

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Single-inductor resonant switched capacitor voltage multiplier with safe commutation

2014 , Rosas-caro, Julio , Mayo Maldonado, Jonathan , Fernando Mancilla-David , Valderrabano-Gonzalez, Antonio , Francisco Beltran Carbajal , Victor M. Sanchez

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Passivity-based Stabilization of DC-DC converters with Constant Power Loads

2019 , J. C. Mayo-Maldonado , J. E. Valdez-Resendiz , Rosas-Caro, Julio , O. F. Ruiz-Martinez , D. Guillen-Aparicio , G. Escobar-Valderrama

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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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Output feedback control for robust tracking of position trajectories for DC electric motors

2014 , Francisco Beltran-Carbajal , Antonio Favela-Contreras , Valderrabano-Gonzalez, Antonio , Rosas-caro, Julio

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Adaptive neural strategies for the interactive tracking flight of two aerial vehicles

2018-01-01 , Yañez-Badillo H. , Tapia-Olvera R. , Beltran-Carbajal F. , Valderrabano-Gonzalez, Antonio , Rosas-Caro, Julio , Aguilar-Mejia O.

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A Low-Cost Jamming Detection Approach Using Performance Metrics in Cluster-Based Wireless Sensor Networks

2021 , Del-Valle-Soto, Carolina , Carlos Mex-Perera , Juan Arturo Nolazco-Flores , Rodríguez Vázquez, Alma Nayeli , Rosas-caro, Julio , Alberto F. Martínez-Herrera

Wireless Sensor Networks constitute an important part of the Internet of Things, and in a similar way to other wireless technologies, seek competitiveness concerning savings in energy consumption and information availability. These devices (sensors) are typically battery operated and distributed throughout a scenario of particular interest. However, they are prone to interference attacks which we know as jamming. The detection of anomalous behavior in the network is a subject of study where the routing protocol and the nodes increase power consumption, which is detrimental to the network’s performance. In this work, a simple jamming detection algorithm is proposed based on an exhaustive study of performance metrics related to the routing protocol and a significant impact on node energy. With this approach, the proposed algorithm detects areas of affected nodes with minimal energy expenditure. Detection is evaluated for four known cluster-based protocols: PEGASIS, TEEN, LEACH, and HPAR. The experiments analyze the protocols’ performance through the metrics chosen for a jamming detection algorithm. Finally, we conducted real experimentation with the best performing wireless protocols currently used, such as Zigbee and LoRa.

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On-line speed control of the shunt-connected DC motor via a neurocontroller

2014 , Tapia, R. , Rosas-caro, Julio , Aguilar, O. , Templos, A.

This paper presents the speed neural control of a shuntconnected DC motor. The rotor speed of the DC motor can follow an arbitrarily selected reference. The purpose is to achieve accurate reference control of the speed, especially when motor and load parameters are unknown. For this task, an on-line B-spline neural network is proposed due to its simple structure, adaptability, and robustness, taking into account the unknown nonlinear dynamics of the DC motor and load. Laboratory tests demonstrate the applicability of the proposition compared with the conventional PI control scheme. The performance of the resulting system has been tested on a 120 V, 2.8 A, 188.49 rad/sec DC motor. ©IEEE

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Power shaping control of DC–DC converters with constant power loads

2020 , Mayo Maldonado, Jonathan , Ruiz-Martinez, O.F. , G. Escobar , T.M. Maupong , J.E. Valdez-Resendiz , Rosas-caro, Julio