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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.
Juan-Gerardo Parada-Salado; Martín-Antonio Rodríguez-Licea; Allan-Giovanni Soriano-Sanchez; Omar-Fernando Ruíz-Martínez; Alejandro Espinosa-Calderon; Francisco-Javier Pérez-Pinal. Study on Multiple Input Asymmetric Boost Converters with Simultaneous and Sequential Triggering. Electronics 2021, 10, 1421 .
AMA StyleJuan-Gerardo Parada-Salado, Martín-Antonio Rodríguez-Licea, Allan-Giovanni Soriano-Sanchez, Omar-Fernando Ruíz-Martínez, Alejandro Espinosa-Calderon, Francisco-Javier Pérez-Pinal. Study on Multiple Input Asymmetric Boost Converters with Simultaneous and Sequential Triggering. Electronics. 2021; 10 (12):1421.
Chicago/Turabian StyleJuan-Gerardo Parada-Salado; Martín-Antonio Rodríguez-Licea; Allan-Giovanni Soriano-Sanchez; Omar-Fernando Ruíz-Martínez; Alejandro Espinosa-Calderon; Francisco-Javier Pérez-Pinal. 2021. "Study on Multiple Input Asymmetric Boost Converters with Simultaneous and Sequential Triggering." Electronics 10, no. 12: 1421.
In this work, the voltage regulation of a boost converter is addressed. A non-integer order PID controller is proposed to deal with the closed-loop instability of the system. The average linear model of the converter is obtained through small-signal approximation. The resulting average linear model is considered divided into minimum and normalized non-minimum phase parts. This approach allows us to design a controller for the minimum phase part of the system, excluding temporarily the non-minimum phase one. A fractional-order PID controller approximation is suggested for the minimum phase part of the system. The proposal for the realization of the electrical controller is described and its implementation is used to corroborate its effectiveness when regulating the output voltage in the boost converter. The fractional-order PID approximation achieves regulation of the output voltage in the boost converter by exhibiting the iso-damping property and using a single control loop, which confirmed its effectiveness in terms of controlling non-minimum phase/variable parameter systems.
Allan Sánchez; Francisco Pérez-Pinal; Martín Rodríguez-Licea; Cornelio Posadas-Castillo. Non-Integer Order Approximation of a PID-Type Controller for Boost Converters. Energies 2021, 14, 3153 .
AMA StyleAllan Sánchez, Francisco Pérez-Pinal, Martín Rodríguez-Licea, Cornelio Posadas-Castillo. Non-Integer Order Approximation of a PID-Type Controller for Boost Converters. Energies. 2021; 14 (11):3153.
Chicago/Turabian StyleAllan Sánchez; Francisco Pérez-Pinal; Martín Rodríguez-Licea; Cornelio Posadas-Castillo. 2021. "Non-Integer Order Approximation of a PID-Type Controller for Boost Converters." Energies 14, no. 11: 3153.
This paper presents the application of three optimization algorithms to increase the chaotic behavior of the fractional order chaotic Chen system. This is achieved by optimizing the maximum Lyapunov exponent (MLE). The applied optimization techniques are evolutionary algorithms (EAs), namely: differential evolution (DE), particle swarm optimization (PSO), and invasive weed optimization (IWO). In each algorithm, the optimization process is performed using 100 individuals and generations from 50 to 500, with a step of 50, which makes a total of ten independent runs. The results show that the optimized fractional order chaotic Chen systems have higher maximum Lyapunov exponents than the non-optimized system, with the DE giving the highest MLE. Additionally, the results indicate that the chaotic behavior of the fractional order Chen system is multifaceted with respect to the parameter and fractional order values. The dynamical behavior and complexity of the optimized systems are verified using properties, such as bifurcation, LE spectrum, equilibrium point, eigenvalue, and sample entropy. Moreover, the optimized systems are compared with a hyper-chaotic Chen system on the basis of their prediction times. The results show that the optimized systems have a shorter prediction time than the hyper-chaotic system. The optimized results are suitable for developing a secure communication system and a random number generator. Finally, the Halstead parameters measure the complexity of the three optimization algorithms that were implemented in MATLAB. The results reveal that the invasive weed optimization has the simplest implementation.
Jose-Cruz Nuñez-Perez; Vincent-Ademola Adeyemi; Yuma Sandoval-Ibarra; Francisco-Javier Perez-Pinal; Esteban Tlelo-Cuautle. Maximizing the Chaotic Behavior of Fractional Order Chen System by Evolutionary Algorithms. Mathematics 2021, 9, 1194 .
AMA StyleJose-Cruz Nuñez-Perez, Vincent-Ademola Adeyemi, Yuma Sandoval-Ibarra, Francisco-Javier Perez-Pinal, Esteban Tlelo-Cuautle. Maximizing the Chaotic Behavior of Fractional Order Chen System by Evolutionary Algorithms. Mathematics. 2021; 9 (11):1194.
Chicago/Turabian StyleJose-Cruz Nuñez-Perez; Vincent-Ademola Adeyemi; Yuma Sandoval-Ibarra; Francisco-Javier Perez-Pinal; Esteban Tlelo-Cuautle. 2021. "Maximizing the Chaotic Behavior of Fractional Order Chen System by Evolutionary Algorithms." Mathematics 9, no. 11: 1194.
In this paper, the parameter-switching technique was applied to control chaos in the Chen oscillator and as a decryption mechanism in a secure transmission system, to transmit RGB and grayscale images. In the past few decades, considerable efforts have been put into the study of the stabilization of chaotic dynamical systems. Most of the well-known chaos control methods, such as Ott, Grebogi, and Yorke (OGY), Pyragas, and open-loop methods, force an unstable periodic orbit into a stable one while distorting the original attractor. On the other hand, the parameter-switching technique is an elegant method that can synthesize an already-existing stable orbit, thereby preserving the underlying attractor. Consequently, the main contributions of this work were the FPGA realizations of the parameter-switching method and a secure image transmission system using a synchronized master and slave topology. The results of the parameter-switching technique and synchronization were verified using phase plots and time series. The chaos-encrypted image from the image transmission system, verified using correlation, showed no relativity with the original image, while the recovery of the decrypted image has no loss of quality. The encryption and decryption system was symmetric, whereby the key was private. In this work, co-simulations were performed in Active-HDL with MATLAB/Simulink, while the target FPGA board was the Xilinx’s Artix-7 AC701.
Vincent-Ademola Adeyemi; Jose-Cruz Nuñez-Perez; Yuma Sandoval Ibarra; Francisco-Javier Perez-Pinal; Esteban Tlelo-Cuautle. FPGA Realization of the Parameter-Switching Method in the Chen Oscillator and Application in Image Transmission. Symmetry 2021, 13, 923 .
AMA StyleVincent-Ademola Adeyemi, Jose-Cruz Nuñez-Perez, Yuma Sandoval Ibarra, Francisco-Javier Perez-Pinal, Esteban Tlelo-Cuautle. FPGA Realization of the Parameter-Switching Method in the Chen Oscillator and Application in Image Transmission. Symmetry. 2021; 13 (6):923.
Chicago/Turabian StyleVincent-Ademola Adeyemi; Jose-Cruz Nuñez-Perez; Yuma Sandoval Ibarra; Francisco-Javier Perez-Pinal; Esteban Tlelo-Cuautle. 2021. "FPGA Realization of the Parameter-Switching Method in the Chen Oscillator and Application in Image Transmission." Symmetry 13, no. 6: 923.
Due to their high robustness and simple maintenance, induction motors (IM) are commonly applied in household appliances and industry. Recently, advanced control techniques are being applied to traditional controllers such as field-oriented control (FOC) and torque control (DTC). Dynamic performance improvement, hardware simplification and software resource reduction are some of the characteristics reported by these advanced techniques, where a comparison of the new proposal with a traditional structure is generally reported for its validation. However, an assessment between advanced techniques is usually missing. Therefore, we evaluated the traditional FOC and DTC with two additional advanced control modifications, fuzzy and predictive. The resulting six structures were numerically evaluated using MATLAB SIMULINK in a 5 HP four-pole three-phase IM and practically validated using hardware-in-the-loop (Typhoon HIL 402 and DSP TMS320F28035). Speed, torque, phase current and flux response are reported for the six controllers and practical insights are summarized.
Luis Ortega-García; Daniela Rodriguez-Sotelo; Jose Nuñez-Perez; Yuma Sandoval-Ibarra; Francisco Perez-Pinal. DSP-HIL Comparison between IM Drive Control Strategies. Electronics 2021, 10, 921 .
AMA StyleLuis Ortega-García, Daniela Rodriguez-Sotelo, Jose Nuñez-Perez, Yuma Sandoval-Ibarra, Francisco Perez-Pinal. DSP-HIL Comparison between IM Drive Control Strategies. Electronics. 2021; 10 (8):921.
Chicago/Turabian StyleLuis Ortega-García; Daniela Rodriguez-Sotelo; Jose Nuñez-Perez; Yuma Sandoval-Ibarra; Francisco Perez-Pinal. 2021. "DSP-HIL Comparison between IM Drive Control Strategies." Electronics 10, no. 8: 921.
This paper considers a three-dimensional nonlinear dynamical system capable of generating spherical attractors. The main activity is the realization of a spherical chaotic attractor on Intel and Xilinx FPGA boards, with a focus on implementation of a secure communication system. The first major contribution is the successful synchronization of two chaotic spherical systems, in VHDL program, in a master-slave topology using Hamiltonian forms. The synchronization errors show that the two spherical chaotic systems synchronize in a very short time after which the error signals become zero. The second major contribution is the FPGA realization of a spherical chaotic attractor-based secure communication system, which involves encrypting both grayscale and RGB images with chaos and diffusion key at the transmitting system, sending the encrypted image via the state variables, and reconstructing the encrypted image at the receiving system. The Intel Stratix III and Xilinx Artix-7 AC701 results are the same as those of MATLAB. The statistical analyses of the encrypted and received images show that the implemented system is very effective, as it reveals high degree of randomness in the encrypted images with the entropy test, and the obtained correlation coefficient, which is zero, removes relativity between the original and encrypted images. Finally, the transmission system fully recovers the original grayscale and RGB images without loss of information.
Jose Cruz Nuñez-Perez; Vincent Ademola Adeyemi; Yuma Sandoval-Ibarra; F. Javier Pérez-Pinal; Esteban Tlelo-Cuautle. FPGA Realization of Spherical Chaotic System with Application in Image Transmission. Mathematical Problems in Engineering 2021, 2021, 1 -16.
AMA StyleJose Cruz Nuñez-Perez, Vincent Ademola Adeyemi, Yuma Sandoval-Ibarra, F. Javier Pérez-Pinal, Esteban Tlelo-Cuautle. FPGA Realization of Spherical Chaotic System with Application in Image Transmission. Mathematical Problems in Engineering. 2021; 2021 ():1-16.
Chicago/Turabian StyleJose Cruz Nuñez-Perez; Vincent Ademola Adeyemi; Yuma Sandoval-Ibarra; F. Javier Pérez-Pinal; Esteban Tlelo-Cuautle. 2021. "FPGA Realization of Spherical Chaotic System with Application in Image Transmission." Mathematical Problems in Engineering 2021, no. : 1-16.
The conversion from existing electrical networks into an all-renewable and environmentally friendly electrification scenario is insufficient to produce and distribute energy efficiently. Electrochemical devices’ premature degradation as a whole caused by electrical stressors in smart grids is incipient from an energy management strategies (EMS) perspective. Namely, few electrical-stress degradation models for photovoltaic panels, batteries, fuel cells, and super/ultra-capacitors (SCs), and particular stressors can be found in the literature. In this article, the basic operating principles for such devices, existing degradation models, and future research hints, including their incorporation in novel EMS, are condensed. The necessity of extending these studies to other stressors and devices is also emphasized. There are many other degradation models by non-electrical stressors, such as climatic conditions and mechanical wear. Although novel EMS should manage both electrical and non-electrical degradation mechanisms and include non-electrochemical devices, models with pure non-electrical-stressors are not the subject of this review since they already exist. Moreover, studies for the degradation of non-electrochemical devices by electrical stressors are very scarce.
Martín Rodríguez Licea; Francisco Pérez Pinal; Allan Soriano Sánchez. An Overview on Electric-Stress Degradation Empirical Models for Electrochemical Devices in Smart Grids. Energies 2021, 14, 2117 .
AMA StyleMartín Rodríguez Licea, Francisco Pérez Pinal, Allan Soriano Sánchez. An Overview on Electric-Stress Degradation Empirical Models for Electrochemical Devices in Smart Grids. Energies. 2021; 14 (8):2117.
Chicago/Turabian StyleMartín Rodríguez Licea; Francisco Pérez Pinal; Allan Soriano Sánchez. 2021. "An Overview on Electric-Stress Degradation Empirical Models for Electrochemical Devices in Smart Grids." Energies 14, no. 8: 2117.
The intelligent use of green and renewable energies requires reliable and preferably anticipated information regarding their availability and the behavior of meteorological variables in a scenario of natural intermittency. Examples of this are the smart grids, which can incorporate, among others, a charging system for electric vehicles and modern and predictive management techniques. However, some issues associated with such procedures are data captured by sensors and transducers with noise in their signals and low information repeatability under the same reading conditions. To tackle such problems, numerous filtering and data fitting techniques and various prediction methods have been developed, but an appropriate selection can be cumbersome. Also, some filtering techniques, such as RANdom SAmple Consensus (RANSAC) appear not to have been used in prediction scenarios for smart grids, to the authors’ knowledge. In this regard, this paper aims to present a comparison in terms of average error, determination coefficient, and cross validation that can be expected under prediction schemes as Multiple Linear Regression, Vector Support Machines and a Multilayer Perceptron Regression Neural Network (MLPRNN), with filtering/scaling methods such as Maximum and Minimum, L2 Norm, Standard Scale, and RANSAC. Cross validation allows to flag problems like overfitting or selection bias, and this comparison is another novelty for smart grid scenarios, to the authors’ knowledge. Although many combinations were analyzed, RANSAC, with L2 Norm filtering and an MLPRNN for prediction, generate the best results. RANSAC algorithm with L2 Norm is a novelty for filtering and predicting in smart grids, and through an MLPRNN, the R 2 error can be reduced to 0.8843, the MSE to 0.8960, and the cross validation accuracy can be increased to 0.44 (±0.2).
Emmanuel Escobar-Avalos; Martín Rodríguez-Licea; Horacio Rostro-González; Allan Soriano-Sánchez; Francisco Pérez-Pinal. A Comparison of Integrated Filtering and Prediction Methods for Smart Grids. Energies 2021, 14, 1980 .
AMA StyleEmmanuel Escobar-Avalos, Martín Rodríguez-Licea, Horacio Rostro-González, Allan Soriano-Sánchez, Francisco Pérez-Pinal. A Comparison of Integrated Filtering and Prediction Methods for Smart Grids. Energies. 2021; 14 (7):1980.
Chicago/Turabian StyleEmmanuel Escobar-Avalos; Martín Rodríguez-Licea; Horacio Rostro-González; Allan Soriano-Sánchez; Francisco Pérez-Pinal. 2021. "A Comparison of Integrated Filtering and Prediction Methods for Smart Grids." Energies 14, no. 7: 1980.
In the last years, low pressure ozone UVC mercury germicidal lamps have been widely used to decontaminate air, surfaces, and water. This technology is mature, and it has been widely used during the pandemic as a measure against SARS-COV-2, the coronavirus that causes COVID-19; because the exposure of this virus to the wavelength wave of 254 nm has been proven to be an effective way to eliminate it. However, the Minamata Convention in 2013 decided to limit mercury lamps by 2020; therefore, the development of new technology devices based on UVC-LEDs (short-wave ultraviolet, light-emitting diodes) are receiving a lot of attention. Today, this technology is commercially available from 265 to 300 nm peak wavelengths, and recently up to 254 nm. Notwithstanding, due to the characteristics of these LEDs, arrangements with a precisely dosed power supply are regularly required to provide effective decontamination. Thus, this paper reports the design and implementation of a power electronic converter for an array of 254 nm UVC-LEDs, which can be used to decontaminate from SARS-COV-2 in a safe way.
Francisco A. Juarez-Leon; Allan Giovanni Soriano-Sanchez; Martin A. Rodriguez-Licea; Francisco J. Perez-Pinal. Design and Implementation of a Germicidal UVC-LED Lamp. IEEE Access 2020, 8, 196951 -196962.
AMA StyleFrancisco A. Juarez-Leon, Allan Giovanni Soriano-Sanchez, Martin A. Rodriguez-Licea, Francisco J. Perez-Pinal. Design and Implementation of a Germicidal UVC-LED Lamp. IEEE Access. 2020; 8 (99):196951-196962.
Chicago/Turabian StyleFrancisco A. Juarez-Leon; Allan Giovanni Soriano-Sanchez; Martin A. Rodriguez-Licea; Francisco J. Perez-Pinal. 2020. "Design and Implementation of a Germicidal UVC-LED Lamp." IEEE Access 8, no. 99: 196951-196962.
Exploitation of green energy sources is essential to diminish the deterioration of our environment. The energy harvesting, represents an alternative to achieve greater range in electric and hybrid vehicles. An energy management strategy (EMS) must be optimized to obtain the best benefits in such vehicles, which is not a trivial task. If harvesting or energy recovery devices are added, the EMS becomes a dual-purpose algorithm: minimizing fuel consumption and maximizing energy harvest through maximum power point tracking (MPPT) controllers. Known studies consider separate EMS, one for traction and another for regenerative braking, without considering harvest devices such as solar panels, regenerative suspension, thermal generators, among others. Furthermore, the electronic power converters used, are not designed to handle such unequal power levels. In this article, an electronic platform to include multiple energy harvesting devices in a fuel-cell hybrid electric vehicle, was presented together with a multiple MPPT-EMS. The EMS is easily implementable, and considers quasiconstant cell energy extraction and filtering of current transients to the battery bank ensuring the longevity of the devices. A new mathematical model of the platform, a closed loop stability analysis, and numerical and Hardware-in-the-Loop (HIL) validations were presented. Some experimental validation results were also provided.
Juan-Gerardo Parada-Salado; Luis-Fernando Gaona-Cárdenas; Martín-Antonio Rodríguez-Licea; Francisco Perez-Pinal. Harvesting in electric vehicles: combining multiple power tracking and fuel-cells. International Journal of Electrical and Computer Engineering (IJECE) 2020, 10, 5058 -5073.
AMA StyleJuan-Gerardo Parada-Salado, Luis-Fernando Gaona-Cárdenas, Martín-Antonio Rodríguez-Licea, Francisco Perez-Pinal. Harvesting in electric vehicles: combining multiple power tracking and fuel-cells. International Journal of Electrical and Computer Engineering (IJECE). 2020; 10 (5):5058-5073.
Chicago/Turabian StyleJuan-Gerardo Parada-Salado; Luis-Fernando Gaona-Cárdenas; Martín-Antonio Rodríguez-Licea; Francisco Perez-Pinal. 2020. "Harvesting in electric vehicles: combining multiple power tracking and fuel-cells." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 5: 5058-5073.
The design and implementation of an energy-management system (EMS) applied to a residential direct current microgrid (DC-µG) is presented in this work. The proposed residential DC-µG is designed to provide a maximum power of one kilowatt by using two photovoltaic arrays (PAs) of 500 W, a battery bank (BB) of 120 V–115 Ah, a supercapacitor module of 0.230 F and a bidirectional DC–AC converter linked to the AC main grid (MG). The EMS works as a centralized manager and it defines the working operation mode for each section of the DC-µG. The operation modes are based on: (1) the DC-link bus voltage, (2) the generated or demanded power to each section of the DC-µG and (3) the BB’s state of charge. The proposed EMS—during the several working operation modes and at the same time—can obtain the maximum energy from the PAs, reduce the energy consumption from the main grid and keep the DC-link bus voltage inside a range of 190 V ± 5%. The EMS and local controllers are implemented by using LabVIEW and NI myRIO-1900 platforms. Moreover, experimental results during connection and disconnection of each DC-µG sections and different on-the-fly transitions are reported, these results focus on the behavior of the DC bus, which shows the DC bus robustness and stability. The robustness of the DC-µG is demonstrated by maintaining a balance of energy between the sources and loads connected to the DC bus under different scenarios.
Alfredo Padilla-Medina; Francisco Perez-Pinal; Alonso Jimenez-Garibay; Antonio Vazquez-Lopez; Juan Martinez-Nolasco. Design and Implementation of an Energy-Management System for a Grid-Connected Residential DC Microgrid. Energies 2020, 13, 4074 .
AMA StyleAlfredo Padilla-Medina, Francisco Perez-Pinal, Alonso Jimenez-Garibay, Antonio Vazquez-Lopez, Juan Martinez-Nolasco. Design and Implementation of an Energy-Management System for a Grid-Connected Residential DC Microgrid. Energies. 2020; 13 (16):4074.
Chicago/Turabian StyleAlfredo Padilla-Medina; Francisco Perez-Pinal; Alonso Jimenez-Garibay; Antonio Vazquez-Lopez; Juan Martinez-Nolasco. 2020. "Design and Implementation of an Energy-Management System for a Grid-Connected Residential DC Microgrid." Energies 13, no. 16: 4074.
Power management strategies (PMS) are applied to keep a balance, between different energy sources (i.e. solar, wind, geothermal, hydro), storage units (i.e. fuel cell, batteries, fly wheel) and loads. Up to date, there has been reported several advance techniques to solve this task, for instance: Fuzzy Logic, Deep Learning, Droop Control, Bayesian Networks, among others. Nevertheless, some of those PMS are over simplified and others are too complex to be programmed in devices with limited resources. To solve these issues, this paper proposes a PMS based on Fuzzy Logic, which keeps a balance between those two goals. Characteristics of the proposed PMS are a small number of rules; fulfillment of the demanded power at every time; reducing use of the storage unit; and keeping a balance between the different sources, storage unit and loads. The proposed PMS is numerically evaluated by using SIMULINK-MATLAB®, in a 10kW residential DC Microgrid (MG), and validated by using a Hardware in the Loop platform (NI myRio-1900 and Typhoon HIL402). A comparison with three popular advance techniques demonstrates the feasibility of the proposed PMS.
Julio C. Pena-Aguirre; Alejandro-Israel Barranco-Gutierrez; Jose A. Padilla-Medina; Alejandro Espinosa-Calderon; Francisco J. Pirez-Pinal. Fuzzy Logic Power Management Strategy for a Residential DC-Microgrid. IEEE Access 2020, 8, 116733 -116743.
AMA StyleJulio C. Pena-Aguirre, Alejandro-Israel Barranco-Gutierrez, Jose A. Padilla-Medina, Alejandro Espinosa-Calderon, Francisco J. Pirez-Pinal. Fuzzy Logic Power Management Strategy for a Residential DC-Microgrid. IEEE Access. 2020; 8 ():116733-116743.
Chicago/Turabian StyleJulio C. Pena-Aguirre; Alejandro-Israel Barranco-Gutierrez; Jose A. Padilla-Medina; Alejandro Espinosa-Calderon; Francisco J. Pirez-Pinal. 2020. "Fuzzy Logic Power Management Strategy for a Residential DC-Microgrid." IEEE Access 8, no. : 116733-116743.
Juan J. Martínez-Nolasco; Sergio Cano-Andrade; José A. Padilla-Medina; Coral Martinez-Nolasco; Alejandro I. Barranco-Gutiérrez; Francisco Perez-Pinal. Design and Implementation of an Embedded Control System for the Interconnection of a DC Microgrid to the AC Main Network. Electric Power Components and Systems 2020, 48, 527 -542.
AMA StyleJuan J. Martínez-Nolasco, Sergio Cano-Andrade, José A. Padilla-Medina, Coral Martinez-Nolasco, Alejandro I. Barranco-Gutiérrez, Francisco Perez-Pinal. Design and Implementation of an Embedded Control System for the Interconnection of a DC Microgrid to the AC Main Network. Electric Power Components and Systems. 2020; 48 (6-7):527-542.
Chicago/Turabian StyleJuan J. Martínez-Nolasco; Sergio Cano-Andrade; José A. Padilla-Medina; Coral Martinez-Nolasco; Alejandro I. Barranco-Gutiérrez; Francisco Perez-Pinal. 2020. "Design and Implementation of an Embedded Control System for the Interconnection of a DC Microgrid to the AC Main Network." Electric Power Components and Systems 48, no. 6-7: 527-542.
Currently, the design of power electronic converters (PECs) is in a stage which looks increasing its efficiency and reducing its dimensions from basic topologies through precise analysis of losses in each device that conforms. Although there have been important advances to improve the active components of PECs, passive components, particularly inductors, have changed very little since several decades ago, and those begin a limiting factor, when a high efficiency at very high power and switching frequency, are required. It is for the foregoing that this paper reviews new ferromagnetic materials to construct inductors and achieve a substantial increasing in efficiency through magnetic permeability and hysteresis improvements. Therefore, the main objective of this work is to position the reader in the state of the art of advanced ferromagnetic materials used in PECs. Details about how they are constructed and qualitative comparison of their dynamic behavior are provided. Also, estimation methods of energy losses, applications for different types of material, and its influence on the performance of some basic PECs are presented.
Daniela Rodriguez-Sotelo; Martin A. Rodriguez-Licea; Allan G. Soriano-Sanchez; Alejandro Espinosa-Calderon; Francisco J. Perez-Pinal. Advanced Ferromagnetic Materials in Power Electronic Converters: A State of the Art. IEEE Access 2020, 8, 56238 -56252.
AMA StyleDaniela Rodriguez-Sotelo, Martin A. Rodriguez-Licea, Allan G. Soriano-Sanchez, Alejandro Espinosa-Calderon, Francisco J. Perez-Pinal. Advanced Ferromagnetic Materials in Power Electronic Converters: A State of the Art. IEEE Access. 2020; 8 (99):56238-56252.
Chicago/Turabian StyleDaniela Rodriguez-Sotelo; Martin A. Rodriguez-Licea; Allan G. Soriano-Sanchez; Alejandro Espinosa-Calderon; Francisco J. Perez-Pinal. 2020. "Advanced Ferromagnetic Materials in Power Electronic Converters: A State of the Art." IEEE Access 8, no. 99: 56238-56252.
To provide an adequate signal integrity to a power amplifier (PA), we propose a digital system for the degradation at the transmitter path, and it is implemented on a field‐programmable gate array (FPGA) board. The proposed system offers the following features: A ‐ary quadrature amplitude modulation (QAM) digital signal generation and in‐phase/quadrature (IQ) imbalance mitigation, and by default, it performs as a predistortion model extraction from PA‐measured data. The simulations and tests provided are performed to effectively verify the PA linearity by using 256‐QAM signals. The nonlinearities are predicted as a reliable solution for linearizing the PA from measurements of AM/AM and AM/PM conversion curves. The performance is evaluated in terms of linearity, computation complexity, and FPGA hardware synthesis according to a dependability compliance of digital signal processing. Finally, the model is validated with input/output data observations to linearize the model with a fitting normalized mean squared error (NMSE) of around dB, a spurious free dynamic range of 40 dBm, and an adjacent channel power ratio reduction by dBm, for a class‐AB broadband radio frequency PA GaN HEMT of 10 W working at 2.34 GHz.
Jose Cruz Nuñez Perez; Sergio Alberto Juarez Cazares; Jose Alejandro Galaviz Aguilar; Yuma Sandoval Ibarra; Francisco Perez-Pinal; Esteban Tlelo Cuautle. FPGA‐based system for effective IQ imbalance mitigation of RF power amplifiers. International Journal of Circuit Theory and Applications 2020, 48, 512 -523.
AMA StyleJose Cruz Nuñez Perez, Sergio Alberto Juarez Cazares, Jose Alejandro Galaviz Aguilar, Yuma Sandoval Ibarra, Francisco Perez-Pinal, Esteban Tlelo Cuautle. FPGA‐based system for effective IQ imbalance mitigation of RF power amplifiers. International Journal of Circuit Theory and Applications. 2020; 48 (4):512-523.
Chicago/Turabian StyleJose Cruz Nuñez Perez; Sergio Alberto Juarez Cazares; Jose Alejandro Galaviz Aguilar; Yuma Sandoval Ibarra; Francisco Perez-Pinal; Esteban Tlelo Cuautle. 2020. "FPGA‐based system for effective IQ imbalance mitigation of RF power amplifiers." International Journal of Circuit Theory and Applications 48, no. 4: 512-523.
In this paper, the approximation of a fractional-order PIDcontroller is proposed to control a DC–DC converter. The synthesis and tuning process of the non-integer PID controller is described step by step. A biquadratic approximation is used to produce a flat phase response in a band-limited frequency spectrum. The proposed method takes into consideration both robustness and desired closed-loop characteristics, keeping the tuning process simple. The transfer function of the fractional-order PID controller and its time domain representation are described and analyzed. The step response of the fractional-order PID approximation shows a faster and stable regulation capacity. The comparison between typical PID controllers and the non-integer PID controller is provided to quantify the regulation speed introduced by the fractional-order PID approximation. Numerical simulations are provided to corroborate the effectiveness of the non-integer PID controller.
Allan G. Soriano-Sánchez; Martín A. Rodríguez-Licea; Francisco J. Pérez-Pinal; José A. Vázquez-López. Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter. Energies 2020, 13, 629 .
AMA StyleAllan G. Soriano-Sánchez, Martín A. Rodríguez-Licea, Francisco J. Pérez-Pinal, José A. Vázquez-López. Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter. Energies. 2020; 13 (3):629.
Chicago/Turabian StyleAllan G. Soriano-Sánchez; Martín A. Rodríguez-Licea; Francisco J. Pérez-Pinal; José A. Vázquez-López. 2020. "Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter." Energies 13, no. 3: 629.
Template Matching is a widely used method for object detection in digital images, it requires great processing power since it is an exhaustive method that compares the intensity levels of a source image pixel-to-pixel with a template image that contains the object to identify. Nowadays there are dedicated embedded systems that provide high processing capabilities, such as the NVIDIA Jetson family. This work presents the experimentation and the performance comparison between the Jetson Nano and Jetson TX2 development kits, when implementing the Template Matching method, in order to get an evaluation criterion to select one of them in image processing projects. It was carried out to six images with different sizes and two variants in terms of the size of the template image. The processing times for the sequential implementation using the CPUs and the parallel implementation with the GPUs were obtained quantitatively. It was observed that the processing times using the parallel versions on average doubled those of the sequential versions and that the Jetson TX2 exceeded the Jetson Nano in execution speeds.
Artiom Basulto-Lantsova; Jose A. Padilla-Medina; Francisco Perez-Pinal; Alejandro I. Barranco-Gutierrez. Performance comparative of OpenCV Template Matching method on Jetson TX2 and Jetson Nano developer kits. 2020 10th Annual Computing and Communication Workshop and Conference (CCWC) 2020, 0812 -0816.
AMA StyleArtiom Basulto-Lantsova, Jose A. Padilla-Medina, Francisco Perez-Pinal, Alejandro I. Barranco-Gutierrez. Performance comparative of OpenCV Template Matching method on Jetson TX2 and Jetson Nano developer kits. 2020 10th Annual Computing and Communication Workshop and Conference (CCWC). 2020; ():0812-0816.
Chicago/Turabian StyleArtiom Basulto-Lantsova; Jose A. Padilla-Medina; Francisco Perez-Pinal; Alejandro I. Barranco-Gutierrez. 2020. "Performance comparative of OpenCV Template Matching method on Jetson TX2 and Jetson Nano developer kits." 2020 10th Annual Computing and Communication Workshop and Conference (CCWC) , no. : 0812-0816.
Flat foot and cavus foot are two types of foot that can cause health problems at an advanced age. These types of foot may change because they evolve with age. Due to this, it is possible to correct the flat and cavus foot. Footprints can be used in order to detect these types of foot. This paper presents the development of a digital podoscope which, with the help of software, can generate a prognosis classification (cavus, normal or flat). The podoscope consisted of a glass supported by a metal frame with a camera at the bottom and lighting on the sides. The software consisted of a user interface developed with Visual Studio and image processing with MATLAB. The feet of 51 children of age range between 6 and 12 years were classified in an approximate time of 1 hour and a half over four days. The estimated time of each standing classification was approximately 1.5 minutes.
David Lazaro; Marlene Lopez; Carlos Herrera; Raúl Santiago; Alfredo Padilla; Francisco Pinal. Clasificador de huellas plantares mediante imagen digital. Journal of Scientific and Technical Applications 2019, 6 -11.
AMA StyleDavid Lazaro, Marlene Lopez, Carlos Herrera, Raúl Santiago, Alfredo Padilla, Francisco Pinal. Clasificador de huellas plantares mediante imagen digital. Journal of Scientific and Technical Applications. 2019; ():6-11.
Chicago/Turabian StyleDavid Lazaro; Marlene Lopez; Carlos Herrera; Raúl Santiago; Alfredo Padilla; Francisco Pinal. 2019. "Clasificador de huellas plantares mediante imagen digital." Journal of Scientific and Technical Applications , no. : 6-11.
Magnetic cores for inductive wireless power transfer (WPT) have many applications and regularly uses E, U, pot and planar/circular shape coils. The systems for wireless energy transfer are not conveniently in the power levels required for some applications, as for the Electric Vehicle (EV) for instance, and there is a necessity to study different coil geometries to improve its efficiency and decrease its volume and weight. In this paper, is presented a new hexagonal-geometry coil design placed in the secondary of a WPT, and the tests demonstrate that a Type-II system compliance requirements (SAE J2954) can be accomplished with greater efficiency and lighter weight compared to circular coil. Finite element analyses accurately allow predicting the mutual inductance and achieving the optimal coil parameters and an experimental setup allows obtaining a rated power output of 7.7 kW operating at 85 kHz. The experimental testbed comprises a series-series resonance compensation circuit, a spiral coil used as primary, the proposed hexagonal pad for the secondary coil, and an AC-output, half-bridge inverter as source, achieving a lighter and efficient system in a realist scenario.
Ibsan U. Castillo-Zamora; Phuoc Snag Huynh; Deepa Vincent; Francisco J. Perez-Pinal; Martin A. Rodriguez-Licea; Sheldon S. Williamson. Hexagonal Geometry Coil for a WPT High-Power Fast Charging Application. IEEE Transactions on Transportation Electrification 2019, 5, 946 -956.
AMA StyleIbsan U. Castillo-Zamora, Phuoc Snag Huynh, Deepa Vincent, Francisco J. Perez-Pinal, Martin A. Rodriguez-Licea, Sheldon S. Williamson. Hexagonal Geometry Coil for a WPT High-Power Fast Charging Application. IEEE Transactions on Transportation Electrification. 2019; 5 (4):946-956.
Chicago/Turabian StyleIbsan U. Castillo-Zamora; Phuoc Snag Huynh; Deepa Vincent; Francisco J. Perez-Pinal; Martin A. Rodriguez-Licea; Sheldon S. Williamson. 2019. "Hexagonal Geometry Coil for a WPT High-Power Fast Charging Application." IEEE Transactions on Transportation Electrification 5, no. 4: 946-956.
Artificial vision systems (AVS) have become very important in precision agriculture applied to produce high-quality and low-cost foods with high functional characteristics generated through environmental care practices. This article reported the design and implementation of a new fuzzy classification architecture based on the RGB color model with descriptors. Three inputs were used that are associated with the average value of the color components of four views of the tomato; the number of triangular membership functions associated with the components R and B were three and four for the case of component G. The amount of tomato samples used in training were forty and twenty for testing; the training was done using the Matlab© ANFISEDIT. The tomato samples were divided into six categories according to the US Department of Agriculture (USDA). This study focused on optimizing the descriptors of the color space to achieve high precision in the prediction results of the final classification task with an error of 536,995×10-6. The Computer Vision System (CVS) is integrated by an image isolation system with lighting; the image capture system uses a Raspberry Pi 3 and Camera Module Raspberry Pi 2 at a fixed distance and a black background. In the implementation of the CVS, three different color description methods for tomato classification were analyzed and their respective diffuse systems were also designed, two of them using the descriptors described in the literature.
Marcos J. Villaseñor-Aguilar; J. Enrique Botello-Álvarez; F. Javier Pérez-Pinal; Miroslava Cano-Lara; M. Fabiola León-Galván; Micael-G. Bravo-Sánchez; Alejandro I. Barranco-Gutierrez. Fuzzy Classification of the Maturity of the Tomato Using a Vision System. Journal of Sensors 2019, 2019, 1 -12.
AMA StyleMarcos J. Villaseñor-Aguilar, J. Enrique Botello-Álvarez, F. Javier Pérez-Pinal, Miroslava Cano-Lara, M. Fabiola León-Galván, Micael-G. Bravo-Sánchez, Alejandro I. Barranco-Gutierrez. Fuzzy Classification of the Maturity of the Tomato Using a Vision System. Journal of Sensors. 2019; 2019 ():1-12.
Chicago/Turabian StyleMarcos J. Villaseñor-Aguilar; J. Enrique Botello-Álvarez; F. Javier Pérez-Pinal; Miroslava Cano-Lara; M. Fabiola León-Galván; Micael-G. Bravo-Sánchez; Alejandro I. Barranco-Gutierrez. 2019. "Fuzzy Classification of the Maturity of the Tomato Using a Vision System." Journal of Sensors 2019, no. : 1-12.