Browsing by Author "González Morales, Luis Gerardo"

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Blade stress monitoring in a small wind turbine by using Arduino microcontroller
(Institute of Electrical and Electronics Engineers Inc., 2019) Mejía Mayancela, Carlos Eduardo; Salazar Llivisaca, Christian Mateo; Minchala Ávila, Luis Ismael; Gonzalez Morales, Luis Gerardo; González Redrován, Javier
This work presents the design and development of a remote monitoring system for the blades' strain in a small wind turbine (SWT). The monitoring system allows real-time transmission of the stress to a remote client which processes the information in order to suggest further control actions to guarantee a reliable wind turbine operation. Experimental results show an increased axial strain of the blade when the rotational speed of the wind turbine is increased. Additionally, an efficient transmission of the stress measurements is achieved by two communication approaches (wired and wireless) to a remote station, which logs and processes the information.
Electrical energy conversion system design with single-phase inverter and H5 transformerless topology
(UNIVERSIDAD DE ANTIOQUIA, 2014-01-01) Colina Morles, Eliezer; Sempertegui Alvarez, Rodrigo Efrain; Vanegas Peralta, Pablo Fernando; Gonzalez Morales, Luis Gerardo
This paper presents the design of an electrical energy conversion system (EECS) for the use of solar energy and its conditioning for injection of energy to the commercial power grid. A single-phase full-bridge inverter with transformerless H5 topology coupled to an LCL filter is used. The system is identified using an averaged small-signal state space model; while the used cascade control scheme is tuned by pole placement and includes a maximum power disturb-observe tracking type algorithm of that increases efficiency by operating the system at the optimum operating point of the solar panel. This design describes essential technical aspects in the components sizing and selection for experimental development, as well as the control structure design for a good performance to face systems perturbations.
Energy efficiency of an electric vehicle in a Latin American intermediate city
(Institute of Electrical and Electronics Engineers Inc., 2018) Gonzalez Morales, Luis Gerardo; Espinoza Abad, Juan Leonardo; Gonzalez Morales, Luis Gerardo
This study analyzes the behavior of the energy efficiency of an Electric Vehicle (EV) in Cuenca (Ecuador), a Latin American intermediate city, considering factors such as orography of the route as well as traffic conditions that include three field routes with urban, mixed, and high-speed characteristics. Three laboratory-driving cycle tests were carried out Federal Test Procedure (FTP-75), National Emission Ceiling Directive (NEDC) and Worldwide harmonized Light vehicles Test Procedures (WLTP). In the six environments, the performance was analyzed from mechanical and electrical variables obtained through a communication system under the On-Board Diagnostics II (OBD2) standard that incorporates the vehicle. The data of each sample contains 154 variables of interest, which are then analyzed by correlation to obtain those that affect the energy performance of the EV. With this information, the efficiency in the …
Micro grid laboratory as a tool for research on non-conventional energy sources in Ecuador
(IEEE, 2018) Espinoza Abad, Juan Leonardo; Sempertegui Álvarez, Rodrigo Efraín; Gonzalez Morales, Luis Gerardo; Gonzalez Morales, Luis Gerardo
This article presents to the scientific community technical and management issues taken into account for the implementation of the Micro Grid Laboratory, which will be part of “Balzay” Scientific, Technological and Research Center of the University of Cuenca. The paper describes the components that integrate the generation, storage and consumption of electrical energy from a combination of renewable and non-renewable sources that allow the emulation of a distributed generation network with the possibility of establishing technical criteria to recreate an intelligent network (Smart grid). The generation, storage and consumption components of the laboratory can interact through a control, monitoring and data acquisition system (SCADA) that allows automation of energy management for teaching and research purposes, as well as the possibility of interconnection with the local grid.
Sustainable use of spilled turbinable energy in Ecuador: three different energy storage systems
(2022) González Morales, Luis Gerardo; Posso Rivera, Fausto; Zalamea, Javier; Espinoza Abad, Juan Leonardo
The incorporation of Energy Storage Systems (ESS) in an electrical power system is studied for the application of Energy Time Shift (ETS) or energy arbitrage, taking advantage of the turbinable energy discharged in hydroelectric plants. For this, three storage systems were selected: Lithium-Ion Batteries (LIB), Vanadium Redox Flow Battery (VRFB), and Hydrogen Storage Systems (H2SS). The spilled turbinable energy available at the Paute Integral hydropower complex in the Republic of Ecuador is taken as the case study. Based on real data from the operation of these plants, a distinctive element of the study, the performance of the selected energy storage systems was analyzed applying the Analytic Hierarchy of Process for decision-making, where technical, economic, and environmental criteria were considered. Electrical energy stored during the early morning seeks to displace the thermal generation during peak hours, close to the demand centers. The results show that all the storage systems analyzed satisfy the required demand, although VRFB is recommended for the ETS. From an economic point of view, LIB represents the best alternative. From a technical point of view, H2SS is slightly superior, while prioritizing environmental aspects, VRFB technology prevails. However, the selection of the best ESS alternative must be continually evaluated, due to permanent technological changes. It is concluded that ESS represent a viable alternative to improve the operational performance of hydroelectric plants, meet the variability of demand, improve the quality of the electrical energy delivered, and displace the pollution-generation plants.