Segura, Juan
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Preferred name
Segura, Juan
Main Affiliation
Quito
Email
juansegura@uti.edu.ec
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Scopus Author ID
58759253800

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Design and Implementation of a Software for Solving Wave Equations

2022 , Suárez-Carreño F. , Rosales L. , Segura, Juan , Flor-Unda O.

Computational aspects of simulation and modeling in the solution of the Heaviside equation are presented. A second-order finite difference approximation scheme was used. The code was implemented in MATLAB and allowed to obtain the induced currents at the moment of an atmospheric discharge. This is a simple example that allows explaining how an algorithm implemented to solve the Heaviside equation which serves as a basis for solving wave equations that describe different physical phenomena and incorporates tools that allow performing more complete studies in the transient regime when studying atmospheric discharges in transmission lines. Improvements to previous works are introduced, which will contribute to developing more applications, since having more direct and interactive contact with the graphs of the transient regime will reinforce the knowledge about the physical phenomenon studied. In the numerical implementation, a finite difference second-order approximation scheme was used. To validate the code, convergence tests were performed, which allow us to conclude that the code is stable and convergent to the second order of approximation. It is demonstrated that the implemented code is general enough to be implemented in simulations of wave equations describing different physical systems. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Elaboration of the Laboratory Test Protocol for Asynchronous Alternating Current Electric Motors at Company, Located in the City of Quito

2023 , Segura, Juan , Enriquez A. , Arteaga, Gerardo , Topon-Visarrea B.

This article analyzes a company dedicated to providing integral and engineering solutions to industries. The company does not have the necessary protocols to perform satisfactorily the operation tests to three-phase asynchronous alternating current motors. Due to the above mentioned, it is necessary for the organization to have the mentioned protocols for a good development of its activities, customer satisfaction, reduction of reprocesses and a possible certification. To solve the problem, we proceed to adapt the process and the respective sub-processes concerning the AC motor operation tests, with respect to the NTE INEN 2 498:2009 standard in force in Ecuador. The same is adapted to the requirements of the organization to develop the protocols for each of the tests indicated in the standard. In addition, flow diagrams based on the Business Process Model and Notation (BPMN) standard are prepared for each of the subprocesses that make up the test protocol in the engines under study. The protocols are made up of four ranges for the execution of the tests to the engines; each one of them aimed at a correct performance of the tests to comply with the standards, minimize reprocesses and achieve customer satisfaction. Likewise, the flow charts are a graphic representation of the steps to be followed in each subprocess, which contributes to a better interpretation of the same by the operator. With the implementation of this protocol, a substantial increase in compliance with the quality standards established by the norm is expected, together with a reduction in reprocesses, which were initially at a percentage of 26, 16 and 21% for the years 2019, 2020 and 2021, respectively. Allowing the creation of favorable conditions in the organization so that it can aspire to a future certification of its processes by national and international entities. © 2023 IEEE.

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