Article Per Year (5 Year)
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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS)
José Ricardo Núñez Alvarez
Universidad de la Costa
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Speed control in DC and AC drives Reinel Beltran Aguedo; Ania Lussón Cervantes; José Ricardo Núñez Alvarez; Yolanda Llosas Albuerne
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 12, No 4: December 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v12.i4.pp2006-2017

Abstract

Three speed-control strategies for DC and AC drives are presented in this study: a proportional integral derivative (PID) control strategy; an internal model control (IMC); and a state-space control by pole assignment with full state observer (ESSO). The three strategies are applied to a case study, demonstrating the potential of each one. Experimental identification was used to obtain the drive models used for the synthesis of the controllers. The three strategies showed satisfactory results when compared with the requirements imposed on the system, in addition to the good rejection of disturbances. However, the IMC strategy showed itself to be a little softer and with no maximum overshoot, which in some cases and some applications is usually a restriction.
Lightning rod system: mathematical analysis using the rolling sphere method Jairo Mora Martínez; Eliana Maria Noriega Angarita; José Ricardo Núñez Alvarez; Michelle Hernandez Crespo; Paulo José Fruto Pertuz
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 13, No 1: March 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v13.i1.pp237-246

Abstract

In electrical protection, there is a method of electrical protection of buildings against atmospheric discharges called the electro-geometric method or the rolling sphere method. So far, it is possible to achieve the implementation of this method graphically, that is, representing through plans and technical drawings, the protection conditions of the analyzed structure and obtaining from these graphic representations the protection parameters with the consequent errors caused by the scales and dimensions of the work plane. In the present work, a mathematical model is obtained that allows, using specific calculations, to analyze the dynamic behavior of a protection system against atmospheric discharges without worrying about the limitations given by the scales and planes. The set of equations obtained in the model allows us to determine the different parameters that define the protection system against atmospheric discharges (lightning) without depending on the graphical representation of the system's topology.
Challenges and perspectives of the use of photovoltaic solar energy in Colombia Christian Manuel Moreno Rocha; Celene Milanés Batista; Willian Fernando Arguello Rodríguez; Arley Jesús Fontalvo Ballesteros; José Ricardo Núñez Álvarez
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 5: October 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i5.pp4521-4528

Abstract

This article quantifies the development of photovoltaic solar energy in Colombia and its current development prospects. The high demand for electricity in Colombia is increasing since there is a large population, industrial, and business increase, which brings a higher energy consumption and consequently economic, social, and environmental problems. Faced with this situation, a possible solution is proposed, using solar energy, to supply the increase in demand and mitigate the problems caused by current electricity generation because Colombia has high levels of solar radiation in almost the entire territory. The objective of this research is based on the analysis of the behavior of the projects on photovoltaic solar systems presented to the mining-energy planning unit (UPME) in the last 14 years until September 30, 2020, as well such as the study of the areas with the most effective implementation of this technology and their respective radiation indices. In addition, a synthesis is made of the regulations, laws, and tax incentives that exist for the implementation of this technology and the different stages of execution of the projects approved and in performance.
Influence of ambient temperature in the city of Portoviejo, Ecuador on the energy performance of photovoltaic modules Genial Belvinel Epeni-Tombo; María Rodríguez-Gámez; Guillermo A. Loor-Castillo; Antonio Vázquez Pérez; José Ricardo Nuñez Alvarez
International Journal of Electrical and Computer Engineering (IJECE) Vol 13, No 1: February 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v13i1.pp46-54

Abstract

The research analyzes the influence of the average temperature on the performance of specific photovoltaic solar modules under the environmental conditions of the city of Portoviejo, province of Manabí, Ecuador. The research is carried out using the qualitative methodology. Its main objective is to determine the influence of temperature on the energy performance of photovoltaic modules under the region's environmental conditions. Two electrical diagrams with different configurations were designed, which were analyzed and simulated using the MATLAB Simulink software. The results obtained show the direct relationship between the electrical parameters of voltage, current intensity, and power with the temperature value on the surface of the modules. It is concluded that the modules generate a higher value of voltage, electric current intensity, and electric power at a lower temperature, regardless of the level of solar irradiation they receive.
Study of electric power quality indicators by simulating a hybrid generation system Frank Grau Merconchini; Luis Vázquez Seisdedos; Janette Cervantes Oliva; José Ricardo Núñez Alvarez; David Checa-Cervantes
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 2: June 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i2.pp1044-1054

Abstract

Currently, as part of the distributed generation paradigm, photovoltaic energy has a growing development. The diversity of the loads, their nonlinearity, and the penetration of the renewable energy sources (RES) cause a worsening of the energy quality indicators. The main quality indicators that affect hybrid photovoltaic systems are voltage and current harmonic distortion, voltage deviation, and voltage and current asymmetry in the system. The construction of physical and mathematical models in software applications, such as MATLAB, Simulink, and Simscape, makes it possible to simulate the operating conditions of these systems and determine the values of the indicators that account for the quality of the electric power supplied. In this work, the modeling and simulation of a photovoltaic system connected to the network that feeds a mixed industrial area are carried out to determine the indicators of energy quality.
Co-Authors Ania Lussón Cervantes Antonio Vázquez Pérez Arley Jesús Fontalvo Ballesteros Celene Milanés Batista Christian Manuel Moreno Rocha David Checa-Cervantes Eliana Maria Noriega Angarita Frank Grau Merconchini Genial Belvinel Epeni-Tombo Guillermo A. Loor-Castillo Jairo Mora Martínez Janette Cervantes Oliva Luis Vázquez Seisdedos María Rodríguez-Gámez Michelle Hernandez Crespo Paulo José Fruto Pertuz Reinel Beltran Aguedo Willian Fernando Arguello Rodríguez Yolanda Llosas Albuerne