Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633308
Santiago Martínez Clinger, Yeison Aldana, O. López-Santos
This paper deals with modelling and control of an autonomous energy device used to automatize the 2ates of open channel irrigation systems. The conventional unidirectional boost converter is controlled to interface a photovoltaic module with a battery array and the electromechanical actuator of the gate, this allowing the operation of the system in the absence of solar irradiation. The work develops modelling of the proposed system in order to deduce a single controller regulating input voltage which is able to operate in the whole set of operation conditions of the system. The resulting system can be used to develop current or voltage outer controllers. Simulation results regarding response to different disturbances confirms its correct operation.
{"title":"Modeling and Control of a Single-Stage PV-Battery Autonomous Energy System","authors":"Santiago Martínez Clinger, Yeison Aldana, O. López-Santos","doi":"10.1109/CCAC51819.2021.9633308","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633308","url":null,"abstract":"This paper deals with modelling and control of an autonomous energy device used to automatize the 2ates of open channel irrigation systems. The conventional unidirectional boost converter is controlled to interface a photovoltaic module with a battery array and the electromechanical actuator of the gate, this allowing the operation of the system in the absence of solar irradiation. The work develops modelling of the proposed system in order to deduce a single controller regulating input voltage which is able to operate in the whole set of operation conditions of the system. The resulting system can be used to develop current or voltage outer controllers. Simulation results regarding response to different disturbances confirms its correct operation.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127382312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633283
M. Machado-Higuera, Nohora Meneses-Casas, Andrés Hernández
The use of renewable energy sources is a major concern nowadays, where efforts are made to achieve higher efficiencies. Among the different possibilities, Biogas production from organic waste represents an interesting technology. One difficulty arises as the system can be unstable under certain conditions, being able to systematically understand these conditions could lead to efficient control design. In this paper the stability analysis of an anaerobic biodigestor using the indirect Lyapunov's method is presented using the model (AM2).
{"title":"Lyapunov Stability Analysis of a Two-Step Anaerobic Digestion Model","authors":"M. Machado-Higuera, Nohora Meneses-Casas, Andrés Hernández","doi":"10.1109/CCAC51819.2021.9633283","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633283","url":null,"abstract":"The use of renewable energy sources is a major concern nowadays, where efforts are made to achieve higher efficiencies. Among the different possibilities, Biogas production from organic waste represents an interesting technology. One difficulty arises as the system can be unstable under certain conditions, being able to systematically understand these conditions could lead to efficient control design. In this paper the stability analysis of an anaerobic biodigestor using the indirect Lyapunov's method is presented using the model (AM2).","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125105236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633274
J. Castellanos, D. Patiño, C. Correa-Flórez, G. Ordóñez-Plata, A. Garcés
In this paper a harmonic power flow formulation for microgrids based on a power flow linearized through Wirtinger's calculus is presented. Through this formulation it is possible to calculate the harmonic power flow independently of the fundamental power flow, which is an advantage when working with tertiary control problems in microgrids. The algorithm with which the formulation was simulated is presented. The fundamental and the harmonic power flow are implemented in a modified CIGRE test case for microgrids. Finally, an evaluation of the harmonic distortion associated to the PV systems modeled is exposed, and performance evaluation is also presented by comparing the presented approach with the currents injection harmonic power flow method starting from an iterative power flow.
{"title":"Harmonic Power Flow Formulation based on the Linear Power Flow in Microgrids","authors":"J. Castellanos, D. Patiño, C. Correa-Flórez, G. Ordóñez-Plata, A. Garcés","doi":"10.1109/CCAC51819.2021.9633274","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633274","url":null,"abstract":"In this paper a harmonic power flow formulation for microgrids based on a power flow linearized through Wirtinger's calculus is presented. Through this formulation it is possible to calculate the harmonic power flow independently of the fundamental power flow, which is an advantage when working with tertiary control problems in microgrids. The algorithm with which the formulation was simulated is presented. The fundamental and the harmonic power flow are implemented in a modified CIGRE test case for microgrids. Finally, an evaluation of the harmonic distortion associated to the PV systems modeled is exposed, and performance evaluation is also presented by comparing the presented approach with the currents injection harmonic power flow method starting from an iterative power flow.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128505195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633297
Manuel Párraga Meneses, A. F. Jaimes, José Vuelvas Quintana
In a non-interconnected area, a water-energy microgrid with distributed energy (e.g., solar panels, wind turbines, combined heat power, generators, batteries) and water resources (e.g., desalination plant, atmospheric water generator, water storage tank) could serve the demand of a discrete geographic footprint (i.e., a small town). This paper proposes an optimal management model of this type of microgrids under the minimum operation cost goal. The mathematical formulation is presented in detail, which involves constraints related to the operation of the system over a time horizon of a week. The proposed model is validated using an estimation of the water-energy demand of a generic small town located in La Guajira Department of Colombia, which is known as Ranchería. The numerical results show the effectiveness of the management model under four study cases.
{"title":"An optimized management model of the resources embedded on an isolated water-energy microgrid for a Ranchería","authors":"Manuel Párraga Meneses, A. F. Jaimes, José Vuelvas Quintana","doi":"10.1109/CCAC51819.2021.9633297","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633297","url":null,"abstract":"In a non-interconnected area, a water-energy microgrid with distributed energy (e.g., solar panels, wind turbines, combined heat power, generators, batteries) and water resources (e.g., desalination plant, atmospheric water generator, water storage tank) could serve the demand of a discrete geographic footprint (i.e., a small town). This paper proposes an optimal management model of this type of microgrids under the minimum operation cost goal. The mathematical formulation is presented in detail, which involves constraints related to the operation of the system over a time horizon of a week. The proposed model is validated using an estimation of the water-energy demand of a generic small town located in La Guajira Department of Colombia, which is known as Ranchería. The numerical results show the effectiveness of the management model under four study cases.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120958407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633329
D. Ovalle M, L. Combita A
This work shows recommendations for the implementation of a low-cost home-made aeropendulum prototype, in order to have a working system at home to experiment and verify concepts of dynamical systems with. The discussion includes options to select structural materials and electronics components, aside from those elements a power supply and a computer are needed, allowing to visualize and, therefore, analyze system behavior associated to specific concepts of dynamical systems and control systems. A very basic implementation of the aeropendulum is shown, as well as some results obtained with such prototype, with suggested further steps to motivate the respective analysis, including some ideas for linear model parameter identification and stability behavior.
{"title":"On the Implementation of Low-cost Home-made Aeropendulum Prototypes for Improving Understanding of Dynamical Systems Concepts","authors":"D. Ovalle M, L. Combita A","doi":"10.1109/CCAC51819.2021.9633329","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633329","url":null,"abstract":"This work shows recommendations for the implementation of a low-cost home-made aeropendulum prototype, in order to have a working system at home to experiment and verify concepts of dynamical systems with. The discussion includes options to select structural materials and electronics components, aside from those elements a power supply and a computer are needed, allowing to visualize and, therefore, analyze system behavior associated to specific concepts of dynamical systems and control systems. A very basic implementation of the aeropendulum is shown, as well as some results obtained with such prototype, with suggested further steps to motivate the respective analysis, including some ideas for linear model parameter identification and stability behavior.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121157382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633305
D. F. Ramírez Jiménez, Alexander López Parrado, J. V. Medina
This paper presents an overview of a framework for the implementation of digital control strategies using Texas Instruments C2000 microcontrollers. The framework was implemented by modifying the Energia IDE, which is an Open-Source software similar to Arduino IDE, but oriented exclusively to some Texas Instruments microcontroller families. Energia IDE was modified to support a new board based on the F2837xD microcontrollers family, to achieve this, we performed some experiments and modifications in files from Energia IDE through tools like Load TI and UniFlash. In addition, we created new source (.c) and header (.h) files similar to those used by Code Composer Studio. Finally, we designed an API for the implementation of digital control strategies and resource management in C2000 microcontrollers.
{"title":"Overview of a framework for Implementation of digital controllers in Energia IDE using Texas Instruments microcontrollers","authors":"D. F. Ramírez Jiménez, Alexander López Parrado, J. V. Medina","doi":"10.1109/CCAC51819.2021.9633305","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633305","url":null,"abstract":"This paper presents an overview of a framework for the implementation of digital control strategies using Texas Instruments C2000 microcontrollers. The framework was implemented by modifying the Energia IDE, which is an Open-Source software similar to Arduino IDE, but oriented exclusively to some Texas Instruments microcontroller families. Energia IDE was modified to support a new board based on the F2837xD microcontrollers family, to achieve this, we performed some experiments and modifications in files from Energia IDE through tools like Load TI and UniFlash. In addition, we created new source (.c) and header (.h) files similar to those used by Code Composer Studio. Finally, we designed an API for the implementation of digital control strategies and resource management in C2000 microcontrollers.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124383653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633298
Cesar E. Conejo-Benitez, Ixbalank Torres, E. Rocha-Cózatl, J. A. Diosdado-De la Peña
This work presents the modeling and simulation of a robotic arm with three degrees of freedom (3 DOF), and the implementation of a robust closed-loop control law, based on the third-order super twisting algorithm (3 STA), to direct the final position of the robotic arm to a different position from the initial one within its workspace, even in the presence of perturbations and parametric uncertainties in the dynamic model. To achieve the robotic arm movement, a linear trajectory was planned with the use of the kinematic model and a fifth degree polynomial. Smooth movements are therefore generated in each joint during the execution of the trajectory.
{"title":"Third order super twisting algorithm applied to a robotic arm with 3 degrees of freedom","authors":"Cesar E. Conejo-Benitez, Ixbalank Torres, E. Rocha-Cózatl, J. A. Diosdado-De la Peña","doi":"10.1109/CCAC51819.2021.9633298","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633298","url":null,"abstract":"This work presents the modeling and simulation of a robotic arm with three degrees of freedom (3 DOF), and the implementation of a robust closed-loop control law, based on the third-order super twisting algorithm (3 STA), to direct the final position of the robotic arm to a different position from the initial one within its workspace, even in the presence of perturbations and parametric uncertainties in the dynamic model. To achieve the robotic arm movement, a linear trajectory was planned with the use of the kinematic model and a fifth degree polynomial. Smooth movements are therefore generated in each joint during the execution of the trajectory.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130135232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633317
Diego F. Sendoya-Losada, Julian G. Ortiz-Trujillo, Christian M. Guevara-Puentes
In this work, two controllers, a Proportional Integral Derivative (PID) and a Model-based Predictive Controller (MPC), have been designed to regulate the temperature of the air inside a closed box. First, the mathematical model estimation for the system (a single-phase AC voltage controller and an incandescent bulb) was performed using Matlab® software. Then the PID controller was designed around a certain setpoint. Next, an algorithm was designed according to the Extended Prediction Self-Adaptive Control (EPSAC). Finally, the performance of the controllers is evaluated for setpoint tracking and disturbance rejection.
{"title":"Temperature regulation by single-phase AC voltage controller using PID and MPC","authors":"Diego F. Sendoya-Losada, Julian G. Ortiz-Trujillo, Christian M. Guevara-Puentes","doi":"10.1109/CCAC51819.2021.9633317","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633317","url":null,"abstract":"In this work, two controllers, a Proportional Integral Derivative (PID) and a Model-based Predictive Controller (MPC), have been designed to regulate the temperature of the air inside a closed box. First, the mathematical model estimation for the system (a single-phase AC voltage controller and an incandescent bulb) was performed using Matlab® software. Then the PID controller was designed around a certain setpoint. Next, an algorithm was designed according to the Extended Prediction Self-Adaptive Control (EPSAC). Finally, the performance of the controllers is evaluated for setpoint tracking and disturbance rejection.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"38 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132286775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633278
Edwin Alejandro Herrera, Tito Arles Silva
In the ethanol and sugar industry, one of the most important parameters to control is the pH of the sugarcane juice because it determines the efficiency throughout the process. However, the pH is one of the most difficult variables to control, because it is a nonlinear system with multiple disturbances. This paper proposes successful control strategies for the alkalized juice system. In particular, a cascade control with feedforward and feedback configuration to control pH and a function of level versus pump speed to minimize disturbances associated with input juice flow rate. A preliminary process characterization is obtained with the Ziegler-Nichols method, which validates the long system dead time. In this way, the system is modified to change its dynamics. The proposed strategies are implemented in one of the main plant producers of ethanol in Colombia. The qualitative and quantitative results show the effectiveness of the control strategies in a comparative study of three cases.
{"title":"Anticipative pH Control of Sugarcane Juice","authors":"Edwin Alejandro Herrera, Tito Arles Silva","doi":"10.1109/CCAC51819.2021.9633278","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633278","url":null,"abstract":"In the ethanol and sugar industry, one of the most important parameters to control is the pH of the sugarcane juice because it determines the efficiency throughout the process. However, the pH is one of the most difficult variables to control, because it is a nonlinear system with multiple disturbances. This paper proposes successful control strategies for the alkalized juice system. In particular, a cascade control with feedforward and feedback configuration to control pH and a function of level versus pump speed to minimize disturbances associated with input juice flow rate. A preliminary process characterization is obtained with the Ziegler-Nichols method, which validates the long system dead time. In this way, the system is modified to change its dynamics. The proposed strategies are implemented in one of the main plant producers of ethanol in Colombia. The qualitative and quantitative results show the effectiveness of the control strategies in a comparative study of three cases.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125866417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1109/CCAC51819.2021.9633264
S. Roncancio, José Vuelvas, D. Patiño, C. Correa-Flórez
The Heating Ventilation and Air Conditioning (HVAC) systems are essential loads in world energy consumption. The proper management of these loads produces a reduction in energy demand. Colombia is an agricultural country, one of its favorite products is flowers. That product needs to be refrigerated for three months to maintain its quality or complete many flowers (a batch) to export and commercialize. In favor of this reason, it is crucial to have an exemplary refrigeration system or improve the current one. This article presents the comparison among some standard system identification algorithms. This development is vital to the flower greenhouses in the Boyacá region to improving efficiency in the post-harvest stage. Matlab software makes the data processing and executes some system identification algorithms in order to determine the most suitable tool for flower greenhouse cooling systems. This process aims to get a fitting percentage above 80%. As a result, the N4SID algorithm presents the best performance with a fitting of 81.23%.
{"title":"Identification for Cooling System in Flower Greenhouse","authors":"S. Roncancio, José Vuelvas, D. Patiño, C. Correa-Flórez","doi":"10.1109/CCAC51819.2021.9633264","DOIUrl":"https://doi.org/10.1109/CCAC51819.2021.9633264","url":null,"abstract":"The Heating Ventilation and Air Conditioning (HVAC) systems are essential loads in world energy consumption. The proper management of these loads produces a reduction in energy demand. Colombia is an agricultural country, one of its favorite products is flowers. That product needs to be refrigerated for three months to maintain its quality or complete many flowers (a batch) to export and commercialize. In favor of this reason, it is crucial to have an exemplary refrigeration system or improve the current one. This article presents the comparison among some standard system identification algorithms. This development is vital to the flower greenhouses in the Boyacá region to improving efficiency in the post-harvest stage. Matlab software makes the data processing and executes some system identification algorithms in order to determine the most suitable tool for flower greenhouse cooling systems. This process aims to get a fitting percentage above 80%. As a result, the N4SID algorithm presents the best performance with a fitting of 81.23%.","PeriodicalId":230738,"journal":{"name":"2021 IEEE 5th Colombian Conference on Automatic Control (CCAC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124730047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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