Papers by Mario Ponce Silva
Energies, 2022
Capacitive technology for wireless power transmission has been shown to be a good option for char... more Capacitive technology for wireless power transmission has been shown to be a good option for charging the batteries of electric vehicles. It offers better coupling between the transmitter and the receiver than inductive power transmission. On the other hand, it has some disadvantages; for example, it is very sensitive to the distance between plates. Several ideas have recently been proposed to overcome this disadvantage. However, a proper analysis methodology is still lacking, as is a proper design procedure for the circuits used in capacitive transmission. In this paper, an analysis and design methodology is presented for applying the Z-tank resonant circuit to capacitive power transmission, and the theoretical design methodology is based on normalized equations with respect to the operating resonance frequency. The analysis methodology and design procedure result in a circuit where the resonance frequency remains constant despite changes in the distance between the capacitive plat...
Applied Mechanics and Materials, 2013
A latest optimization algorithm, named Teaching-Learning-Based Optimization (simply TLBO) was pro... more A latest optimization algorithm, named Teaching-Learning-Based Optimization (simply TLBO) was proposed by R. V. Rao et al, at 2011. Afterwards, some improvements and practical applications have been conducted toward TLBO algorithm. However, as far as our knowledge, there are no such works which categorize the current works concerning TLBO from the algebraic and analytic points of view. Hence, in this paper we firstly introduce the concepts and algorithms of TLBO, then survey the running mechanism of TLBO for dealing with the real-parameter optimization problems, and finally group its real-world applications with a categorizing framework based on the clustering, multi-objective optimization, parameter optimization, and structure optimization. The main advantage of this work is to help the users employ TLBO without knowing details of this algorithm. Meanwhile, we also give an experimental comparison for demonstrating the effectiveness of TLBO on 5 benchmark evaluation functions and co...
World Electric Vehicle Journal
The excessive use of fossil fuels has caused great concern due to modern environmental problems, ... more The excessive use of fossil fuels has caused great concern due to modern environmental problems, particularly air pollution. The above situation demands that different areas of research aim at a sustainable movement to reduce CO2 emissions caused by non-renewable organic fuels. A solution to this problem is the use of Electric Vehicles (EV) for mass transportation of people. However, these systems require high-power DC/DC converters capable of handling high current levels and should feature high efficiencies to charge their batteries. For this application, a single-stage converter is not viable for these applications due to the high current stress in a switch, the low power density, and its low efficiency due to higher switching losses. One solution to this problem is Multiphase Converters, which offer high efficiency, high power density, and low current ripple on the battery side. However, these characteristics are affected by the current imbalance in the phases. This paper is focu...
Electronics
This paper presents a mathematical analysis of how energy return in grid-connected single-phase p... more This paper presents a mathematical analysis of how energy return in grid-connected single-phase photovoltaic systems affects the sizing of passive components. Energy return affects the size of the link capacitor, making it larger than reported in the literature. One of the main points of this article is that an inverter connected to the grid using a DC–DC converter with an appropriate link capacitor is analyzed. The energy return is caused by the value (in Henry units) of the L-filter, which is also analyzed in this paper. The analysis shows that there is a link between the value of the L-filter and the voltage of the DC bus. The analysis assumes two conditions: (1) the DC bus voltage is always higher than the peak value of the grid sinusoidal voltage, and (2) there is a unity power factor at the connection point between the grid and the L-filter. To operate in an open loop, a compensation phase angle is calculated and introduced in the single-phase inverter modulation; this phase a...
2016 IEEE Ecuador Technical Chapters Meeting (ETCM), 2016
This article presents a new heuristic strategy for the elaboration of a reconfiguration model for... more This article presents a new heuristic strategy for the elaboration of a reconfiguration model for Distribution System Fault Tolerance (DSFT) using Petri nets (PN). Its intent is to model, analyze and optimize the program for the management of Smart Reclosers and Sectionalizers in a Smart Grid Distribution System, which together with the detection of faults, manage its isolation and the reconnection of a new system that maintains working capacity. In addition, according to the condition of protective equipment, thereby guarantees the supply continuity. The restoration of the distribution system with the support of the block diagram of the Study Guide Modes Start and Stop (GEMMA) arises. The objective is to design with PN a decision sequence for the programming design of intelligent electronic devices (RTU-IED-PLC) that allows the operation of the distribution network in fault status in branch form or in combination. This keeps quality levels of energy delivery to a vast majority of users, and is able to perform autonomously with the rapid restoration of customers for a Smart Distribution System. It also provides greater flexibility for the following: control design for validation states (State feedback control), the Event Feedback control, and simplification and plans for the restoration of the smart restoration plans system intelligent distribution.
Energies
Currently, the design of resonant power converters has only been developed while operating in the... more Currently, the design of resonant power converters has only been developed while operating in the steady state, while the design operating in the transient stage has not been considered nor reported. This paper is interested in testing the performance of the resonant circuits operating in the transient stage and finding applications where benefits can be obtained from this form of operation. One application in which it is possible to obtain benefits from designing resonant circuits in the transient state is in the area of frequency multiplication. Usually, to achieve frequency multiplication, it is necessary to resort to complex methods and special devices that increase the complexity of the design and the total cost of the circuit. This paper evaluates the performance of a series RLC resonant circuit operating in the transient stage and with an underdamped response acting as a frequency multiplier, where the oscillation frequency of the current in the resonant tank is “n” number of...
Electronics
The most common problems with magnetic cores in high-stress applications are changes in their per... more The most common problems with magnetic cores in high-stress applications are changes in their permeability and low saturation flux density, forcing designers to use special nanocrystalline cores, which raises the overall cost of the circuit. This paper evaluates the performance of a low-cost magnetic material composed of unsaturated polyester la mination resin COR61-AA-531EX and 200 mesh iron powder with a grain size of 74 µm, which has magnetic properties of the so-called “soft magnetic composites”, which have good magnetic characteristics in high-frequency and high-stress applications. This composite material was used for the elaboration of magnetic cores for the inductors of a resonant converter, which aims to achieve a high power factor, where in this type of application, there are large current and voltage excursions in the magnetic components that vary between high and low frequencies, being a suitable application for testing the inductors with a magnetic core of resin/iron po...
2018 14th International Conference on Power Electronics (CIEP), 2018
This paper presents the use of the Resonant Half-Bridge Current-Inverter (RHBCI) as power supply ... more This paper presents the use of the Resonant Half-Bridge Current-Inverter (RHBCI) as power supply for an induction fluorescent lamp, avoiding the use of electrolytic capacitors. The inductors of the RHBCI, are used to storage energy during the zero crossing of the input ac main voltage instead of to store it in electrolytic capacitors, in order to obtain high power factor and low total harmonic distortion (THD). Experimental results show a high power factor (95%), a THD less than 30% and compliance with the European standard 61000-3-2 class C. On the other hand, SiC devices are used in order to minimize the inverse recover time of the switches and obtain zero-current switching (ZCS).
Electronics, 2021
This paper presents a theoretical analysis of a DC-DC flyback converter variant applied in energy... more This paper presents a theoretical analysis of a DC-DC flyback converter variant applied in energy harvesting based on thermoelectric generators. The main contribution of the article is the analysis and obtaining the equations of the behavior of the converter with a rearrangement of the elements of the traditional flyback converter in such a way that the converter only processes part of the energy while the other part is delivered directly to the load. This is achieved by connecting the secondary of the flyback in series with the load, and this assembly, in turn, is placed in parallel with the primary and the voltage source. This configuration means that the topology can only be a boost topology; however, there are benefits such as partial power processing (R2P2) and reduced stress on converter components in both voltage and current; all this leads to increase the efficiency. A Low Frequency Averaging Analysis (LFAA) was used to determine the behavior of the proposed circuit, and a s...
IEEE Transactions on Plasma Science
The study of this article mainly focuses on the assessment and performance of current and voltage... more The study of this article mainly focuses on the assessment and performance of current and voltage inverters in ozone generation, applying power density modulation (PDM) and typical operation. The topologies designed were a voltage-source full-bridge inverter (VSFBI), a current-source full-bridge inverter (CSFBI), and a CSFBI without considers the PDM. The inverters were analyzed and implemented considering an inductor–capacitor–capacitor (LCC) series–parallel resonant tank for the VSFBI and an <inline-formula> <tex-math notation="LaTeX">$LC$ </tex-math></inline-formula> parallel resonant tank for the CSFBI. The duty cycle impact (<inline-formula> <tex-math notation="LaTeX">$D_{\mathrm{ m}}$ </tex-math></inline-formula>) of the modulation signal was analyzed, and all inverters were compared. Based on the results, the decrease in <inline-formula> <tex-math notation="LaTeX">$D_{\mathrm{ m}}$ </tex-math></inline-formula> allows increasing the ozone generation because of avoiding the dissociation of the ozone molecules. The maximum concentration and efficacy presented by the VSFBI in ozone production were 620 gr/m<sup>3</sup> and 0.155 gr/min. Also, the maximum electrical efficiency was 91%; it was presented by the CSFBI without PDM.
Electronics, 2020
This paper focuses on the main reasons of low efficiency in a current-fed DC-DC resonant converte... more This paper focuses on the main reasons of low efficiency in a current-fed DC-DC resonant converter applied to photovoltaic (PV) isolated systems, comparing the effects derived by the overlapping time in the gate-signals (gate-source voltage) combining silicon (Si), silicon carbide (SiC), and gallium nitride (GaN)-based power devices. The results show that unidirectional switches (metal–oxide–semiconductor field-effect transistors (MOSFETs) plus diode) present hard switching as a result of the diode preventing the MOSFET capacitance of being discharged. The effectiveness of the converter was verified with a 200-W prototype with an input voltage range of 0–30.3 V, an output voltage of 200 V, and a switching frequency of 200 kHz. The reduction losses by applying GaN versus Si and SiC technologies are 66.49% and 53.57%, respectively. Alternatively, by applying SiC versus Si devices the reduction loss is 27.84%. Finally, according to the results, 60% of losses were caused by the diodes o...
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021
In this article, a novel high-power-factor electrolytic-capacitorless light-emitting diode (LED) ... more In this article, a novel high-power-factor electrolytic-capacitorless light-emitting diode (LED) driver based on the use of a ripple port is presented. The ripple port consists of adding an extra power processing circuit at the output of the converter that injects energy to compensate for the output current and voltage ripples. In this work, the main converter is built by using a flyback converter operating in the discontinuous conduction mode (DCM). The ripple port is implemented by adding an extra winding to the flyback coupled inductors, together with an extra switch, a capacitor, and an inductor. The additional switch is used to inject energy to the output in the time intervals, in which the flyback output current is low, thus reducing the output current ripple. The proposed converter is analyzed in detail, and a design methodology is proposed. A design example for a 27-V/1-A LED lamp is presented. Simulation and laboratory experiments have also been carried out. It is demonstrated that the proposed solution can achieve a reduction on the output current ripple of around 65% compared to the solution without ripple port for the same total capacitance and maintain a high power factor of 0.994.
Sensors, 2020
In order to solve the trajectory tracking task in a wheeled mobile robot (WMR), a dynamic three-l... more In order to solve the trajectory tracking task in a wheeled mobile robot (WMR), a dynamic three-level controller is presented in this paper. The controller considers the mechanical structure, actuators, and power stage subsystems. Such a controller is designed as follows: At the high level is a dynamic control for the WMR (differential drive type). At the medium level is a PI current control for the actuators (DC motors). Lastly, at the low level is a differential flatness-based control for the power stage (DC/DC Buck power converters). The feasibility, robustness, and performance in closed-loop of the proposed controller are validated on a DDWMR prototype through Matlab-Simulink, the real-time interface ControlDesk, and a DS1104 board. The obtained results are experimentally assessed with a hierarchical tracking controller, recently reported in literature, that was also designed on the basis of the mechanical structure, actuators, and power stage subsystems. Although both controlle...
Applied Energy, 2020
Abstract Pedaling energy is a clean and sustainable energy source capable of supplying power to a... more Abstract Pedaling energy is a clean and sustainable energy source capable of supplying power to a variety of low power electronic devices. Furthermore, pedaling energy has proven to be a sustainable energy solution, in combination with other renewable energy sources for developing communities. However, currently, the use of this energy is still limited. The main contribution of this paper is to present a review of static pedaling technologies that use rotary transducers to convert pedaling energy into electrical energy, to identify current advances and design trends, comparing and classifying the elements that integrate the main stages of energy transmission and transformation, identifying areas of opportunity to improve their functionality, efficiency or other aspects of interest. The review includes information about the human capacity to deliver power in a pedaling mechanism such as the cadence-power ratio, cadence-torque, maximum power, and critical power. As a result of the review are reported geometric structure, transducer type, power converter, transmission ratio, power output, among other of the reviewed systems data. Moreover, a design sequence, which is considered appropriate, is proposed to optimize the pedaling energy harvesters of static mechanisms. Finally, the review results, trends, and challenges are discussed.
Revista Facultad de Ingeniería Universidad de Antioquia, 2018
This paper presents the design of a fault detection circuit applied to a silicon carbide Mosfet (... more This paper presents the design of a fault detection circuit applied to a silicon carbide Mosfet (SiC-Mosfet). Fault detection is done by monitoring the behavior of the gate signal. The most important characteristic that has been reported in literature is quick detection since the evaluation is done while the SiC Mosfet is turning-on. With this method fast detection is allowed for short-circuit and open-circuit failure with small times for detection which prevents to spread the failure to the full system. To validate the fault detection circuit a boost converter with SiC-Mosfet was designed. Experimental results validate the reliability of the proposal. RESUMEN: Este artículo presenta el diseño de un circuito de detección de fallas aplicado a Mosfet de carburo de silicio; la detección de falla es realizada a través del monitoreo de comportamiento de la señal de compuerta. Las más importantes características que se analizaron y se reportan son: rápida detección debido a que la evaluación se realiza en la conmutación a encendido, permitiendo la detección de fallas en corto circuito y circuito abierto; tiempos rápidos de detección lo que previene difusión de la falla al sistema completo. Para validar el circuito de detección fue diseñado un convertidor boost con SiC-Mosfet. Los resultados obtenidos validan la confiabilidad de la propuesta presentada.
Complexity, 2019
In this paper, a new linear feedback controller for synchronization of two identical chaotic syst... more In this paper, a new linear feedback controller for synchronization of two identical chaotic systems in a master-slave configuration is presented. This controller requires knowing a priori Lipschitz constant of the nonlinear function of the chaotic system on its attractor. The controller development is based on an algebraic Riccati equation. If the gain matrix and the matrices of Riccati equation are selected in such a way that a unique positive definite solution is obtained for this equation, then, with respect to previous works, a stronger result can be guaranteed here: the exponential convergence to zero of the synchronization error. Additionally, the nonideal case is also studied, that is, when unmodeled dynamics and/or disturbances are present in both master system and slave system. On this new condition, the synchronization error does not converge to zero anymore. However, it is still possible to guarantee the exponential convergence to a bounded zone. Numerical simulation con...
International Journal of Circuit Theory and Applications, 2018
In this paper, the analysis, design, and implementation of a power supply based on a multi-stage-... more In this paper, the analysis, design, and implementation of a power supply based on a multi-stage-shunt class E amplifier applied to ozone generation are presented. The proposed topology operates with pulsating waveforms and allows unidirectional energy flow from the power supply to the load with no energy return. Furthermore, due to the multi-stage operation, it presents a lower stress in the switches compared with other similar topologies. To validate the proposed topology, a prototype was designed to feed a set of ozone generating cells in a power range of 0 to 500 W. This prototype provides an efficiency of 95% with an ozone production of 10.5 g/h and efficacy of 22.89 g/kWh. The proposed power supply is an alternative to feed any other type of dielectric barrier discharge load while keeping the efficiency of the power supply above 90%.
IEEE Transactions on Power Electronics, 2018
Abstract-This paper presents an igniter circuit for high-intensitydischarge (HID) lamps based on... more Abstract-This paper presents an igniter circuit for high-intensitydischarge (HID) lamps based on an inverter and a resonant tank that has been adapted to stabilize inductively an HID lamp by mean of applying lowfrequency quasi-square waveforms to voltage and current in the lamp in order to reduce the presence of the acoustic resonances. With the proposed improvement, the igniter circuit performs three different functions: 1) the lamp ignition, 2) the arc stabilization, and 3) the acoustic resonances reduction. This proposal allows the use of fewer components, and less energy processing is minimized, so the resulting ballast is cheaper and more efficient than other ballast that avoids the acoustic resonances when they are working with square waveforms in the lamp voltage and current. The circuit was validated experimentally by using a 70 W conventional High-Pressure Sodium (HPS) lamp, which is operated with a frequency of 2 kHz. The results were: an electrical efficiency of 94%, a crest factor in the lamp current of 1.41, and it was not observed the presence of acoustic resonances.
Renewable and Sustainable Energy Reviews, 2017
Energy harvesting has become an interest area to research, due to the wide range of applications ... more Energy harvesting has become an interest area to research, due to the wide range of applications were could be employed. AC energy harvesting schemes present an important disadvantage with respect to DC harvesting schemes, they need to synchronize the operation of the power converter with the electric generator voltage waveform. In order to get this synchronization there are different schemes reported, each one has its advantages and disadvantages and in function of the application they are representative or not. In this paper a review of the different AC energy harvesting schemes with different techniques used to synchronize the power converter and the electric generator are shown, at the end of the review a simple scheme with reduced number of components and minimum computational cost is proposed.
Información tecnológica, 2016
En este artículo se presentan resultados experimentales para un generador lineal con diferentes c... more En este artículo se presentan resultados experimentales para un generador lineal con diferentes condiciones de efecto fin con el fin de obtener una comparación cualitativa para ajustar los parámetros geométricos del generador (longitud de los devanados y longitud del estator). El uso de generadores lineales en los sistemas de aprovechamiento de energía es algo común hoy en día. Uno de los problemas que presentan estos generadores es la distorsión en la forma de onda del voltaje inducido debido al "efecto fin". El efecto fin se presenta debido al cambio de velocidad que presenta el rotor en los bordes del generador y repercute de forma directa en la forma de onda del voltaje inducido y en la transferencia de energía hacia la carga. Sin embargo, el efecto fin no es un factor que se incluya en la metodología de diseño de los generadores lineales. La propuesta de este trabajo permite obtener una forma de onda senoidal de voltaje inducido en lugar de una forma de onda pulsante de voltaje inducido como se ha reportado en la literatura.
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Papers by Mario Ponce Silva