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Dr. Isaías González Pérez
University of Extremadura (Spain)

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Research Keywords & Expertise

0 Industry 4.0
0 microgrids
0 Renewable Energy Integration
0 Automation & Control
0 Smart Grid technologies

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Journal article
Published: 22 July 2021 in Sustainability
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Smart grids and smart microgrids (SMGs) require proper monitoring for their operation. To this end, measuring, data acquisition, and storage, as well as remote online visualization of real-time information, must be performed using suitable equipment. An experimental SMG is being deployed that combines photovoltaics and the energy carrier hydrogen through the interconnection of photovoltaic panels, electrolyser, fuel cell, and load around a voltage bus powered by a lithium battery. This paper presents a monitoring system based on open-source hardware and software for tracking the temperature of the photovoltaic generator in such an SMG. In fact, the increases in temperature in PV modules lead to a decrease in their efficiency, so this parameter needs to be measured in order to monitor and evaluate the operation. Specifically, the developed monitoring system consists of a network of digital temperature sensors connected to an Arduino microcontroller, which feeds the acquired data to a Raspberry Pi microcomputer. The latter is accessed by a cloud-enabled user/operator interface implemented in Grafana. The monitoring system is expounded and experimental results are reported to validate the proposal.

ACS Style

José Portalo; Isaías González; Antonio Calderón. Monitoring System for Tracking a PV Generator in an Experimental Smart Microgrid: An Open-Source Solution. Sustainability 2021, 13, 8182 .

AMA Style

José Portalo, Isaías González, Antonio Calderón. Monitoring System for Tracking a PV Generator in an Experimental Smart Microgrid: An Open-Source Solution. Sustainability. 2021; 13 (15):8182.

Chicago/Turabian Style

José Portalo; Isaías González; Antonio Calderón. 2021. "Monitoring System for Tracking a PV Generator in an Experimental Smart Microgrid: An Open-Source Solution." Sustainability 13, no. 15: 8182.

Journal article
Published: 19 February 2021 in Sustainability
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Intelligent energy facilities, e.g., smart grids and microgrids are the evolution of traditional energy grids through digital transformation. These modern paradigms are expected to foster the utilization of renewable energies, sustainable development, and resilience of the power grid. A barrier found when deploying experimental smart grids and microgrids consists of handling the heterogeneity of the required hardware and software components as well as the available commercial equipment. Despite the fact that there is various architecture proposed in previous literature, it commonly lacks experimental validation, specification of involved equipment concerning industrial/proprietary or open-source nature, and concretization of communication protocols. To overcome such drawbacks, this paper proposes an innovative multi-layered architecture to deploy heterogeneous automation and monitoring systems for microgrids. The architecture is structured into six functional layers to organize the hardware and software equipment in an integrated manner. The open protocol Modbus TCP is chosen to harmonize communications, enabling the interconnection of equipment from industrial and energy scopes, indeed of open-source nature. An experimental photovoltaic-based smart microgrid is reported as the application case to demonstrate the suitability and validity of the proposal.

ACS Style

Isaías González; Antonio Calderón; José Portalo. Innovative Multi-Layered Architecture for Heterogeneous Automation and Monitoring Systems: Application Case of a Photovoltaic Smart Microgrid. Sustainability 2021, 13, 2234 .

AMA Style

Isaías González, Antonio Calderón, José Portalo. Innovative Multi-Layered Architecture for Heterogeneous Automation and Monitoring Systems: Application Case of a Photovoltaic Smart Microgrid. Sustainability. 2021; 13 (4):2234.

Chicago/Turabian Style

Isaías González; Antonio Calderón; José Portalo. 2021. "Innovative Multi-Layered Architecture for Heterogeneous Automation and Monitoring Systems: Application Case of a Photovoltaic Smart Microgrid." Sustainability 13, no. 4: 2234.

Journal article
Published: 16 October 2019 in Sustainable Energy Technologies and Assessments
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Large scale deployment of Smart Grids (SGs) and Smart Micro-Grids (SMGs) requires overcoming problems related to interoperability and high costs. To automate and monitor these challenging infrastructures, industrial equipment is used due to their reliability and versatility. In particular, Programmable Logic Controllers (PLCs) are the prevalent automation units devoted to process control. They are combined with Supervisory Control and Data Acquisition (SCADA) systems, responsible of acquiring and displaying operational data. One of the prominent trends to facilitate such deployment is the open source movement, being the Arduino microcontroller one of the most illustrative examples. This low-cost and community-supported platform is achieving increasing attention from academy and industry. However, there is still a need of integration frameworks to combine this device with reliable industrial equipment. This paper presents an approach that seamlessly integrates PLCs and Arduino platforms into a common SCADA system using the connectivity provided by Open Platform Communications (OPC). The open source device is devoted to sensing tasks. As a proof of concept, an application case has been carried out within the automation system of an experimental SMG, where the temperature of a PV panel is sensed and monitored. The developed system is described and successful results are reported.

ACS Style

Isaías González; Antonio José Calderón. Integration of open source hardware Arduino platform in automation systems applied to Smart Grids/Micro-Grids. Sustainable Energy Technologies and Assessments 2019, 36, 100557 .

AMA Style

Isaías González, Antonio José Calderón. Integration of open source hardware Arduino platform in automation systems applied to Smart Grids/Micro-Grids. Sustainable Energy Technologies and Assessments. 2019; 36 ():100557.

Chicago/Turabian Style

Isaías González; Antonio José Calderón. 2019. "Integration of open source hardware Arduino platform in automation systems applied to Smart Grids/Micro-Grids." Sustainable Energy Technologies and Assessments 36, no. : 100557.

Research article
Published: 26 September 2019 in The International Journal of Electrical Engineering & Education
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Virtual laboratories have been demonstrated to contribute successfully to the theoretical understanding of many important systems theory and automatic control concepts in engineering education. This paper describes the pilot experience on the use of such laboratories as learning tools in introductory systems theory courses at the University of Extremadura during the academic year 2015/2016. The purpose of the present paper is to offer some objective academic evidence for the effectiveness of the use of virtual laboratories to improve learning in laboratory lessons in engineering.

ACS Style

Inés Tejado; Isaías González; Isaías González Pérez; Pilar Merchán. Introducing systems theory with virtual laboratories at the University of Extremadura: How to improve learning in the lab in engineering degrees. The International Journal of Electrical Engineering & Education 2019, 1 .

AMA Style

Inés Tejado, Isaías González, Isaías González Pérez, Pilar Merchán. Introducing systems theory with virtual laboratories at the University of Extremadura: How to improve learning in the lab in engineering degrees. The International Journal of Electrical Engineering & Education. 2019; ():1.

Chicago/Turabian Style

Inés Tejado; Isaías González; Isaías González Pérez; Pilar Merchán. 2019. "Introducing systems theory with virtual laboratories at the University of Extremadura: How to improve learning in the lab in engineering degrees." The International Journal of Electrical Engineering & Education , no. : 1.

Review
Published: 08 May 2019 in Electronics
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Extensive digitization and interconnection through networks have ushered in a number of new paradigms over the last years: Internet of Things, cyber–physical systems, Industry 4.0, etc. These challenging systems rely on an effective information communication between distributed components. Therefore, the heterogeneity of entities, both hardware and software, must be handled to achieve an operative interoperability and a proper behavior. However, there is also a heterogeneous availability of solutions; different technologies, protocols, and architectures aim to achieve a seamless interconnection. Henceforth, the standardization still requires great efforts from industrial and scientific environments. In this sense, the interface of the open platform communications (OPC) has supported connectivity for automation and supervision infrastructures for more than two decades. The OPC comprises the so-called classic OPC, the original protocol, as well as the last specification, unified architecture (UA). The widespread utilization of the classic OPC together with the powerful functionalities of OPC UA, make the latter one of the main candidates to lead the standardization and systems integration. This paper presents a survey of recent OPC-based systems reported in scientific literature for different domains as well as research projects. The goal of this paper is to provide a broad perspective about the OPC’ applicability and capabilities in order to support the decision about communication interfaces. The results are analyzed and discussed putting special attention on the aforementioned new paradigms. Finally, the main conclusions and open research directions are highlighted.

ACS Style

Isaías González; Antonio José Calderón; João Figueiredo; João M. C. Sousa. A Literature Survey on Open Platform Communications (OPC) Applied to Advanced Industrial Environments. Electronics 2019, 8, 510 .

AMA Style

Isaías González, Antonio José Calderón, João Figueiredo, João M. C. Sousa. A Literature Survey on Open Platform Communications (OPC) Applied to Advanced Industrial Environments. Electronics. 2019; 8 (5):510.

Chicago/Turabian Style

Isaías González; Antonio José Calderón; João Figueiredo; João M. C. Sousa. 2019. "A Literature Survey on Open Platform Communications (OPC) Applied to Advanced Industrial Environments." Electronics 8, no. 5: 510.

Journal article
Published: 21 May 2018 in Journal of Sensor and Actuator Networks
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Networks of sensors and actuators in automated manufacturing processes are implemented using industrial fieldbuses, where automation units and supervisory systems are also connected to exchange operational information. In the context of the incoming fourth industrial revolution, called Industry 4.0, the management of legacy facilities is a paramount issue to deal with. This paper presents a solution to enhance the connectivity of a legacy Flexible Manufacturing System, which constitutes the first step in the adoption of the Industry 4.0 concept. Such a system includes the fieldbus PROcess FIeld BUS (PROFIBUS) around which sensors, actuators, and controllers are interconnected. In order to establish effective communication between the sensors and actuators network and a supervisory system, a hardware and software approach including Ethernet connectivity is implemented. This work is envisioned to contribute to the migration of legacy systems towards the challenging Industry 4.0 framework. The experimental results prove the proper operation of the FMS and the feasibility of the proposal.

ACS Style

Antonio José Calderón Godoy; Isaías González Pérez. Integration of Sensor and Actuator Networks and the SCADA System to Promote the Migration of the Legacy Flexible Manufacturing System towards the Industry 4.0 Concept. Journal of Sensor and Actuator Networks 2018, 7, 23 .

AMA Style

Antonio José Calderón Godoy, Isaías González Pérez. Integration of Sensor and Actuator Networks and the SCADA System to Promote the Migration of the Legacy Flexible Manufacturing System towards the Industry 4.0 Concept. Journal of Sensor and Actuator Networks. 2018; 7 (2):23.

Chicago/Turabian Style

Antonio José Calderón Godoy; Isaías González Pérez. 2018. "Integration of Sensor and Actuator Networks and the SCADA System to Promote the Migration of the Legacy Flexible Manufacturing System towards the Industry 4.0 Concept." Journal of Sensor and Actuator Networks 7, no. 2: 23.

Journal article
Published: 31 October 2016 in Sensors
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In this paper the design and implementation of a network for integrating Programmable Logic Controllers (PLC), the Object-Linking and Embedding for Process Control protocol (OPC) and the open-source Easy Java Simulations (EJS) package is presented. A LabVIEW interface and the Java-Internet-LabVIEW (JIL) server complete the scheme for data exchange. This configuration allows the user to remotely interact with the PLC. Such integration can be considered a novelty in scientific literature for remote control and sensor data acquisition of industrial plants. An experimental application devoted to remote laboratories is developed to demonstrate the feasibility and benefits of the proposed approach. The experiment to be conducted is the parameterization and supervision of a fuzzy controller of a DC servomotor. The graphical user interface has been developed with EJS and the fuzzy control is carried out by our own PLC. In fact, the distinctive features of the proposed novel network application are the integration of the OPC protocol to share information with the PLC and the application under control. The user can perform the tuning of the controller parameters online and observe in real time the effect on the servomotor behavior. The target group is engineering remote users, specifically in control- and automation-related tasks. The proposed architecture system is described and experimental results are presented.

ACS Style

Isaías González; Antonio José Calderón; Andrés Mejías; José Manuel Andújar. Novel Networked Remote Laboratory Architecture for Open Connectivity Based on PLC-OPC-LabVIEW-EJS Integration. Application in Remote Fuzzy Control and Sensors Data Acquisition. Sensors 2016, 16, 1822 .

AMA Style

Isaías González, Antonio José Calderón, Andrés Mejías, José Manuel Andújar. Novel Networked Remote Laboratory Architecture for Open Connectivity Based on PLC-OPC-LabVIEW-EJS Integration. Application in Remote Fuzzy Control and Sensors Data Acquisition. Sensors. 2016; 16 (11):1822.

Chicago/Turabian Style

Isaías González; Antonio José Calderón; Andrés Mejías; José Manuel Andújar. 2016. "Novel Networked Remote Laboratory Architecture for Open Connectivity Based on PLC-OPC-LabVIEW-EJS Integration. Application in Remote Fuzzy Control and Sensors Data Acquisition." Sensors 16, no. 11: 1822.

Journal article
Published: 09 March 2016 in Sensors
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In this work a new, scalable and low cost multi-channel monitoring system for Polymer Electrolyte Fuel Cells (PEFCs) has been designed, constructed and experimentally validated. This developed monitoring system performs non-intrusive voltage measurement of each individual cell of a PEFC stack and it is scalable, in the sense that it is capable to carry out measurements in stacks from 1 to 120 cells (from watts to kilowatts). The developed system comprises two main subsystems: hardware devoted to data acquisition (DAQ) and software devoted to real-time monitoring. The DAQ subsystem is based on the low-cost open-source platform Arduino and the real-time monitoring subsystem has been developed using the high-level graphical language NI LabVIEW. Such integration can be considered a novelty in scientific literature for PEFC monitoring systems. An original amplifying and multiplexing board has been designed to increase the Arduino input port availability. Data storage and real-time monitoring have been performed with an easy-to-use interface. Graphical and numerical visualization allows a continuous tracking of cell voltage. Scalability, flexibility, easy-to-use, versatility and low cost are the main features of the proposed approach. The system is described and experimental results are presented. These results demonstrate its suitability to monitor the voltage in a PEFC at cell level.

ACS Style

Antonio José Calderón; Isaías González; Manuel Calderón; Francisca Segura; José Manuel Andújar. A New, Scalable and Low Cost Multi-Channel Monitoring System for Polymer Electrolyte Fuel Cells. Sensors 2016, 16, 349 .

AMA Style

Antonio José Calderón, Isaías González, Manuel Calderón, Francisca Segura, José Manuel Andújar. A New, Scalable and Low Cost Multi-Channel Monitoring System for Polymer Electrolyte Fuel Cells. Sensors. 2016; 16 (3):349.

Chicago/Turabian Style

Antonio José Calderón; Isaías González; Manuel Calderón; Francisca Segura; José Manuel Andújar. 2016. "A New, Scalable and Low Cost Multi-Channel Monitoring System for Polymer Electrolyte Fuel Cells." Sensors 16, no. 3: 349.

Conference paper
Published: 01 June 2015 in 2015 9th International Conference on Compatibility and Power Electronics (CPE)
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Supervisory Control and Data Acquisition systems play a paramount role in the operation of electrical power systems. In this paper, two monitoring systems are developed and applied for self-sufficient hybrid systems based on renewable energy and hydrogen. Siemens WinCC flexible and National Instruments LabVIEW software packages have been used. The first one runs in an operator panel linked with a PLC. For the LabVIEW-based SCADA, a data acquisition card collects sensors information. Their main features and capabilities for local and remote use are exposed.Supervisory Control and Data Acquisition systems play a paramount role in the operation of electrical power systems. In this paper, two monitoring systems are developed and applied for self-sufficient hybrid systems based on renewable energy and hydrogen. Siemens WinCC flexible and National Instruments LabVIEW software packages have been used. The first one runs in an operator panel linked with a PLC. For the LabVIEW-based SCADA, a data acquisition card collects sensors information. Their main features and capabilities for local and remote use are exposed.

ACS Style

Isaías González Pérez; Antonio José Calderón Godoy; Manuel Calderon Godoy; Jose Luis Herrero Agustin. Monitoring of electric power systems: Application to self-sufficient hybrid renewable energy systems. 2015 9th International Conference on Compatibility and Power Electronics (CPE) 2015, 560 -565.

AMA Style

Isaías González Pérez, Antonio José Calderón Godoy, Manuel Calderon Godoy, Jose Luis Herrero Agustin. Monitoring of electric power systems: Application to self-sufficient hybrid renewable energy systems. 2015 9th International Conference on Compatibility and Power Electronics (CPE). 2015; ():560-565.

Chicago/Turabian Style

Isaías González Pérez; Antonio José Calderón Godoy; Manuel Calderon Godoy; Jose Luis Herrero Agustin. 2015. "Monitoring of electric power systems: Application to self-sufficient hybrid renewable energy systems." 2015 9th International Conference on Compatibility and Power Electronics (CPE) , no. : 560-565.

Proceedings article
Published: 01 March 2015 in IREC2015 The Sixth International Renewable Energy Congress
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This paper deals with an automation platform to perform R&D tasks on the field of management and control over stand-alone hybrid renewable energy systems. A laboratory scale wind-photovoltaic-hydrogen prototype acts as test-bed to evaluate different control techniques. A successful application of fuzzy logic is reported. Exergy analysis is carried out to determine the efficiency of the main components from experimental results.

ACS Style

Isaías González Pérez; Antonio Jose Calderon Godoy; Manuel Calderon Godoy; Antonio Ramiro Gonzalez. Experimental automation platform of stand-alone hybrid renewable energy systems: Fuzzy logic application and exergy analysis. IREC2015 The Sixth International Renewable Energy Congress 2015, 1 -6.

AMA Style

Isaías González Pérez, Antonio Jose Calderon Godoy, Manuel Calderon Godoy, Antonio Ramiro Gonzalez. Experimental automation platform of stand-alone hybrid renewable energy systems: Fuzzy logic application and exergy analysis. IREC2015 The Sixth International Renewable Energy Congress. 2015; ():1-6.

Chicago/Turabian Style

Isaías González Pérez; Antonio Jose Calderon Godoy; Manuel Calderon Godoy; Antonio Ramiro Gonzalez. 2015. "Experimental automation platform of stand-alone hybrid renewable energy systems: Fuzzy logic application and exergy analysis." IREC2015 The Sixth International Renewable Energy Congress , no. : 1-6.

Conference paper
Published: 01 January 2014 in Proceedings of the 11th International Conference on Informatics in Control, Automation and Robotics
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ACS Style

Isaías González Pérez; A. José Calderón Godoy; Manuel Calderon Godoy. Fuzzy Controller based on PLC S7-1200 - Application to a Servomotor. Proceedings of the 11th International Conference on Informatics in Control, Automation and Robotics 2014, 156 -163.

AMA Style

Isaías González Pérez, A. José Calderón Godoy, Manuel Calderon Godoy. Fuzzy Controller based on PLC S7-1200 - Application to a Servomotor. Proceedings of the 11th International Conference on Informatics in Control, Automation and Robotics. 2014; ():156-163.

Chicago/Turabian Style

Isaías González Pérez; A. José Calderón Godoy; Manuel Calderon Godoy. 2014. "Fuzzy Controller based on PLC S7-1200 - Application to a Servomotor." Proceedings of the 11th International Conference on Informatics in Control, Automation and Robotics , no. : 156-163.

Conference paper
Published: 01 January 2012 in 10th International Conference on Informatics in Control, Automation and Robotics
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ACS Style

Isaías González Pérez; Manuel Calderon Godoy. Fuzzy Control of a Hybrid Renewable Power System based on Real-time Matlab-PLC Communication through OPC. 10th International Conference on Informatics in Control, Automation and Robotics 2012, 15 -21.

AMA Style

Isaías González Pérez, Manuel Calderon Godoy. Fuzzy Control of a Hybrid Renewable Power System based on Real-time Matlab-PLC Communication through OPC. 10th International Conference on Informatics in Control, Automation and Robotics. 2012; ():15-21.

Chicago/Turabian Style

Isaías González Pérez; Manuel Calderon Godoy. 2012. "Fuzzy Control of a Hybrid Renewable Power System based on Real-time Matlab-PLC Communication through OPC." 10th International Conference on Informatics in Control, Automation and Robotics , no. : 15-21.

Conference paper
Published: 01 April 2009 in 2009 IEEE International Conference on Mechatronics
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This work presents an automation system to carry out the climate control of a greenhouse. Distributed control system based on a programmable logic controller connected to a group of sensors and actuators via the field bus PROFIBUS (process field bus) and ET 200S decentralized periphery stations is implemented. Moreover, installation is supervised in situ and remotely using an operator panel with monitoring and control software. The designed system constitutes a benchmark for advanced control strategies based on greenhouse climate models.

ACS Style

Isaías González Pérez; Antonio José Calderón Godoy. Greenhouse automation with programmable controller and decentralized periphery via field bus. 2009 IEEE International Conference on Mechatronics 2009, 1 -6.

AMA Style

Isaías González Pérez, Antonio José Calderón Godoy. Greenhouse automation with programmable controller and decentralized periphery via field bus. 2009 IEEE International Conference on Mechatronics. 2009; ():1-6.

Chicago/Turabian Style

Isaías González Pérez; Antonio José Calderón Godoy. 2009. "Greenhouse automation with programmable controller and decentralized periphery via field bus." 2009 IEEE International Conference on Mechatronics , no. : 1-6.

Journal article
Published: 30 August 2021
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ACS Style

Isaías González Pérez. Introducing automatic evaluation in virtual laboratories for control engineering at University of Extremadura. First steps. 2021, 1 .

AMA Style

Isaías González Pérez. Introducing automatic evaluation in virtual laboratories for control engineering at University of Extremadura. First steps. . 2021; ():1.

Chicago/Turabian Style

Isaías González Pérez. 2021. "Introducing automatic evaluation in virtual laboratories for control engineering at University of Extremadura. First steps." , no. : 1.

Journal article
Published: 30 August 2021
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ACS Style

Isaías González Pérez. Measurement system based on Arduino for biogas sensing: Development considerations and laboratory scale approach. 2021, 1 .

AMA Style

Isaías González Pérez. Measurement system based on Arduino for biogas sensing: Development considerations and laboratory scale approach. . 2021; ():1.

Chicago/Turabian Style

Isaías González Pérez. 2021. "Measurement system based on Arduino for biogas sensing: Development considerations and laboratory scale approach." , no. : 1.

Journal article
Published: 30 August 2021
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ACS Style

Isaías González Pérez. Biogas Analyzer Based on Open Source Hardware: Design and Prototype Implementation. 2021, 1 .

AMA Style

Isaías González Pérez. Biogas Analyzer Based on Open Source Hardware: Design and Prototype Implementation. . 2021; ():1.

Chicago/Turabian Style

Isaías González Pérez. 2021. "Biogas Analyzer Based on Open Source Hardware: Design and Prototype Implementation." , no. : 1.