A5010226713- Photovoltaic System Optimization Techniques
- Stability and Control of Uncertain Systems
- Matrix Theory and Algorithms
- solar cell performance optimization
- Multi-Criteria Decision Making
- Control Systems and Identification
- Photovoltaic Systems and Sustainability
- Chaos control and synchronization
- Nonlinear Dynamics and Pattern Formation
- Fault Detection and Control Systems
- Solar Thermal and Photovoltaic Systems
- Fuzzy Systems and Optimization
- Innovative Approaches in Technology and Social Development
- Neural Networks Stability and Synchronization
- Integrated Circuits and Semiconductor Failure Analysis
- Adaptive Control of Nonlinear Systems
- Assistive Technology in Communication and Mobility
- Solar Radiation and Photovoltaics
- Innovation and Socioeconomic Development
- Plant Surface Properties and Treatments
- Cybersecurity and Information Systems
- Force Microscopy Techniques and Applications
- Fuzzy Logic and Control Systems
- Quantum chaos and dynamical systems
- Optimization and Mathematical Programming
Universidad Politécnica de Guanajuato
2024
Pontifícia Universidade Católica de Minas Gerais
2003-2019
Universidade Federal de Minas Gerais
2004
Photovoltaic (PV) module soiling is a growing area of concern for performance and reliability. This paper provides evaluations the fundamental interactions dust/soiling particles with several PV surfaces. The purpose to investigate basic mechanisms involving chemistry, morphology, resulting particle adhesion first photon-incident surface. evaluation mapping chemistry composition single dust collected from operating surfaces are presented. correlated direct measurements adhesive force...
A linear matrix inequality approach to the robust H∞ control problem of uncertain continuous- and discrete-time time-invariant systems with time delay in state vector input is developed. The main results provide sufficient delay-dependent conditions for problem, where explicit size plays a crucial role closed-loop stability. solutions that are found less conservative when compared other approaches recent literature.
PV module soiling is a growing area of concern for performance and reliability. This paper provides evaluations the fundamental interactions dust/soiling particles with several surfaces. The purpose to investigate basic mechanisms involving chemistry, morphology resulting particle adhesion that first photon-incident surface first-time evaluation mapping chemistry single dust from operating surfaces presented. direct measurements adhesive force individual grains are reported, including...
The understanding of the fundamental physics and chemistry dust interaction these soiling fragments with PV module surface each other is potentially important to developing viable mitigation approaches. This paper builds on our previous reports observations investigating individual particle adhesion glass using microscale proximal probe techniques. Specifically, in this presentation we report refinement those adhesive force measurements by gaining including information contact area particles...
Soiling of PV modules is a growing concern because the derating energy output from solar installations, especially in markets sun-rich areas world that ironically also might have greatest issues with dust accumulation. This paper examines relationships among soiling levels and module performance, climate conditions, physical chemical properties particles surfaces involved. Specifically, these studies focus on commonly encountered non-uniform surfaces. These accumulations not only cause...
This paper investigates the synchronization of coupled chaotic systems using techniques from theory robust [Formula: see text] control based on Linear Matrix Inequalities. To deal with a class Lur'e discrete time systems, project methodology is proposed. A laboratory setup Chua's oscillator circuit used to demonstrate main ideas in context problem information transmission.
This paper develops a Linear Matrix Inequality (LMI) approach to the robust /spl Hscr//sub infin// control problem of uncertain continuous-and discrete-time linear time-invariant systems with time-delay in state vector and input. The main results provide sufficient delay-dependent conditions for problem, where explicit size time delay plays crucial role closed-loop stability. solutions that are found Hscr/;/sub less conservative, when compared other approaches.
Brasil's principally southern-hemisphere geographic location represents interesting, complex, and comparative opportunities for soiling studies, encompassing sub-tropical, tropical, Semi-Arid climate zones. This paper summarizes our methodology, with results quantifying the ratios (SRatio) rates (SRate) different photovoltaic (PV) technologies installed in diverse climate-zones Brazil (based on climate-zone mapping). Specifically, these analytic procedures are validated monitoring stations...
This study presents an integrated approach that combines the Levenberg–Marquardt (LM) and Luus–Jaakola (LJ) algorithms to enhance parameter estimation for various applications. The LM algorithm, known its precision in solving non-linear least squares problems, is effectively paired with LJ a robust stochastic optimization method, improve accuracy computational efficiency. hybrid LM-LJ methodology demonstrated through several case studies, including of MESH equations distillation processes,...
This paper presents a less conservative approach to compute, with any prescribed accuracy, the H <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞</inf> guaranteed cost of time-delay continuous-time linear time-invariant systems subjected polytopic uncertainties. The proposed analysis is based on branch-and-bound algorithm that incorporates recent LMI-based formulation and new polytope partition strategy. In algorithm, upper bound function...
Aware of the gap that exists between social rights protected by laws and its full enjoyment, a multidisciplinar team composed engineers, educators brazilians students, joined to develop assistive technology products contribute inclusion people with disabilities, especially those low-income people. This paper presents successful experience this on development valuable low-tech. Construction procedures describe how transform conventional computer peripherals such as mouses keyboards in custom...
This paper aims to show the IPUC's Technological Fair, an event that is held twice a year by Polytechnic Institute of Pontifical Catholic University Minas Gerais - IPUC, currently in its 6th edition. The creativity and innovation most these projects from engineering students frequently result simple low cost solutions. These involve around one thousand several areas IPUC they are exposed bustling fair. Both issues gained joining formation team work with challenges poverty development...
A sujidade dos módulos fotovoltaicos é uma preocupação crescente devido a diminuição da produção de energia elétrica em instalação solar fotovoltaica. Este problema tem sido observado nas áreas que possuem grande disponibilidade radiação solar, ironicamente apresentam na maioria casos problemas com acumulação poeira. artigo examina as relações entre diferentes distribuições não uniformes e o desempenho tecnologias silício policristalino telureto cádmio. Essas acumulações só causam produzida,...