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Congress on Evolutionary Computation

作者： Daniel M. Muñoz Carlos H. Llanos Leandro dos S. Coelho Mauricio Ayala-Rincón Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia Brazil Industrial and Systems Engineering Graduate Program LAS/PPGEPS Pontifical Catholic University of Paraná Curitiba Parana Brazil Department of Computer Science and Mathematics University of Brasilia Brasilia Brazil

Synthesis of musical instruments or human voice is a time consuming process which requires theoretical and experimental knowledge about the synthesis engine. Commonly, performers need to deal with synthesizer interfaces and a process of trial and error for creating musical sounds similar to a target sound. This drawback can be overcome by adjusting automatically the synthesizer parameters using optimization algorithms. In this paper a hybrid particle swarm optimization (PSO) algorithm is proposed to solve the frequency modulation (FM) matching synthesis problem. The proposed algorithm takes advantage of a shuffle process for exchanging information between particles and applies the selective passive congregation and the opposition-based learning approaches to preserve swarm diversity. Both approaches for injecting diversity are based on simple operators, preserving the easy implementation philosophy of the particle swarm optimization. The proposed hybrid particle swarm optimization algorithm was validated for a three-nested FM synthesizer, which represents a 6-dimensional multimodal optimization problem with strong epistasis. Simulation results revealed that the proposed algorithm presented promising results in terms of quality of solutions.

关键词： Frequency modulation Optimization Equations Convergence Particle swarm optimization Genetic algorithms

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Single Inductor Dual Buck Inverter Classical and Predictive Linear Voltage Controller Comparison

Single Inductor Dual Buck Inverter Classical and Predictive ...

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IEEE Annual Southern Power Electronics Conference (SPEC)

作者： Luis David Patarroyo-Gutierrez Nelson Nayoshi Nakamoto Yamaguti Oscar Mauricio Hernández-Gómez Daniel Abreu Macedo Da Silva School of electronic Engineering Universidad Pedagógica y Tecnológica de Colombia Tunja-Boyacá Colombia Dep. of Automation and Systems Federal University of Santa Catarina Florianopolis SC Brazil Electrical Engineering Graduate Program Federal University of Pará Belem Brazil

This article presents the mathematical model of a 2 KW DBI (Dual Buck Inverter) converter that can be used in renewable energy applications. The inverter operating modes are described with the equations that model their behavior with the activation signals of the MOSFETs. The switching model is built. Simulation results are presented by applying linear control through a PI controller and GPC (Generalized Predictive Controller) hybridized in PID structure; simulation results are recorded in PSIM© verifying the control response due to changes in the load and the input DC voltage level.

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Coordinated Control of Parallel Power Conditioners Synthesizing Resistive Loads in Single-Phase AC Microgrids

Coordinated Control of Parallel Power Conditioners Synthesiz...

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European Conference on Power Electronics and Applications

作者： Augusto Matheus dos Santos Alonso Danilo Iglesias Brandao Fernando Pinhabel Marafão Elisabetta Tedeschi Norwegian University of Science & Technology (NTNU) Trondheim Norway Graduate Program in Electrical Engineering Federal University of Minas Gerais (UFMG) Belo Horizonte Brazil Group of Automation and Integrated Systems Sao Paulo State University (UNESP) Sorocaba Brazil

Without proper coordination, power conditioners within microgrids are prone to suffer from resonance phenomena due to the complex and dynamic interactions among the main grid, nonlinear loads and distributed converters. In addition to the detriment of grid-connected devices and loads, harmonic voltage resonances may also lead to microgrid instability. As a consequence, the steering of distributed power conditioners to diminish voltage distortions and suppress undesired currents has been playing a key role on enhancing the operational stiffness of microgrids. In general, such conditioners are driven by the synthesis of sinusoidal currents independently on the status of voltage waveforms, which may not adequately damp harmonic resonances and still jeopardize system stability. Thus, this work proposes the coordination of multiple parallel power conditioners, which are driven as controlled current sources, through a current-based approach that synthesizes resistive loads, enhancing the system capability to damp voltage resonances, as well as improving power quality within microgrids. Simulation results comprising a single-phase microgrid with resonant and nonlinear loads, as well as two distributed power conditioners, are presented to demonstrate the effectiveness of the approach.

关键词： Harmonic analysis Microgrids Europe Power harmonic filters Voltage control Power electronics

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Robust Current Control of Three-Phase Grid-Connected Converters by Using the ADRC Method 16

Robust Current Control of Three-Phase Grid-Connected Convert...

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16th Brazilian Power Electronics Conference, COBEP 2021

作者： Campos De Araujo, Diana Alves Moor Neto, Joao Amin Do Brasil, Thiago Americano Gouvea, Josiel Alves Lopes Zachi, Alessandro Rosa Electrical Engineering Graduate Program Centro Fed. de Educ. Tecn. Celso Suckow da Fonseca CEFET/RJ Rio de Janeiro Brazil Centro Fed. de Educ. Tecn. Celso Suckow da Fonseca CEFET/RJ Department of Electrical Engineering Rio de Janeiro Brazil Centro Fed. de Educ. Tecn. Celso Suckow da Fonseca CEFET/RJ Department of Control Systems and Automation Rio de Janeiro Brazil

ISBN: (纸本)9781665421294

This paper addresses the control design of a current mode control for a three-phase voltage source converter. A variant of the Active Disturbance Rejection Control (ADRC) scheme is proposed for comparison with the classical inner control approach. The ADRC method has a straightforward design procedure and has well-known abilities for disturbance rejection and robustness to parametric uncertainties of the system. Theoretical studies are presented and simulation results are discussed by using EMTP-RV environment considering the system Synchronous Reference Frame Control, whose modeling was extracted from the analysis performed in a classical refer-ence. © 2021 IEEE.

关键词： Electric current control

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A Machine Learning Method for Vehicle Classification by Inductive Waveform Analysis ⁎

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IFAC-PapersOnLine 2020年第2期53卷 13928-13932页

作者： Bruno R. Vasconcellos Marcelo Rudek Marcelo de Souza Pontifícia Universidade Católica do Paraná - PUCPR Control and Automation Egineering Curitiba PR 80215-901 Pontifícia Universidade Católica do Paraná - PUCPR Industrial and Systems Engineering Graduate Program Curitiba PR 80215-901 Fiscaltech Curitiba PR 81290-270

The classification of vehicles is a matter of great importance for traffic control and management, helping with traffic surveillance as well as in statistical data collection. Among the several vehicular classification techniques, the most popular uses inductive loop sensors, because they achieve high accuracy rate at low cost. This paper proposes 5 different vehicle classification models by inductive waveform analysis: KNN, SVC, Decision Tree, Random Forest, and Voting Classifier. A brief introduction to the mathematical basis of these models and the main forms of vehicle detection are also presented. The obtained results reached an accuracy of 94% and showed how inductive waveform analysis is still a valid option for vehicle classification.

关键词： Machine learning Intelligent transportation systems Information processing Decision support

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Identifiability and Excitation of a Class of Rational systems

Identifiability and Excitation of a Class of Rational System...

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IEEE Annual Conference on Decision and Control

作者： Alexandre S. Bazanella Michel Gevers Daniel Coutinho Rafael Rui Graduate Program in Electrical Engineering Universidade Federal do Rio Grande do Sul Brazil ICTEAM Louvain University B1348 Louvain la Neuve Belgium Department of Automation and Systems Universidade Federal Santa Catarina Florianopolis SC Brazil

ISBN: (纸本)9781467360890

In a recent paper (Gevers et al., CDC 2013) [6] we have presented identifiability and excitation conditions for a class of linearly parametrized polynomial systems with a scalar state. The present paper expands the model class in two ways: we consider a class of rational systems with vector states that can be written in the so-called "generalized controller form". The identifiability for such systems can be determined using the Ritt algorithm as shown in the seminal paper (Ljung and Glad, 1994) [10]. Here we present an alternative and simple method which offers a lot of insight into the structural conditions on the model class that make it globally identifiable and into the generation of informative experiments.

关键词： Mathematic Identifiability Excitation Rational number SOS Calls Controllers

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Computation of Resistance and Potential of Grounding Grids in Any Geometry

Computation of Resistance and Potential of Grounding Grids i...

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IEEE International Conference on Environment and Electrical engineering

作者： Thyago G. Pires José W. L. Nerys Carlos L. B. Silva Diogo N. Oliveira Antonio M. Silva Filho Wesley P. Calixto Aylton J. Alves School of Electric and Computing Engineering. Federal University of Goias. Goiania Brazil Graduate Program in Electronic and Automation Systems Engineering. University of Brasilia. Brasilia Brazil Experimental & Technologic Research and Study Group. Federal Institute of Education Science and Technology. Goiania Brazil

ISBN: (纸本)9781509023219

This paper deals with the computation of ground resistance, surface voltage, touch voltage and step voltage, to mesh with horizontal wires arranged in different angles. The computer program implemented used in the mathematical modeling is based on the method proposed by Heppe, which allows obtaining the grounding parameters for homogeneous soil and soil stratified in two layers. The results obtained with the proposed method will be compared with other methods in literature. Also will be presented the results of a grounding grid using wires at various angles.

关键词： ground grid leakage current mesh voltage multilayer soil surface potential

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Considerations on Communication Infrastructures for Cooperative Operation of Smart Inverters

Considerations on Communication Infrastructures for Cooperat...

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Brazilian Power Electronics Conference, COBEP

作者： Augusto Matheus dos Santos Alonso Leonardo Carlos Afonso Danilo Iglesias Brandao Elisabetta Tedeschi Fernando Pinhabel Marafão G. of Automation and Int. Systems (GASI) São Paulo State University (UNESP) Sorocaba Brazil Graduate Program in Electrical Engineering Federal University of Minas Gerais (UFMG) Belo Horizonte Brazil Department of Electric Power Engineering Norwegian University of Science & Technology (NTNU) Trondheim Norway

ISBN: (数字)9781728141800

ISBN: (纸本)9781728141817

The presence of distributed generation systems spread over low-voltage electrical networks is boosting the development of control methodologies aiming at coordinating and cooperatively managing the existing smart inverters. Although low-bandwidth data transmission links are constantly described to be required for a considerable number of centralized and decentralized control methodologies, there is a gap in literature concerning the plain understanding of the features of the related communication protocols available for such application. Thus, this paper brings considerations on some of the most relevant communication protocols that can be applied to the cooperative control of multiple smart inverters, taking into account the recent updates on interoperability requirements recommended by the IEEE 1547-2018 standard. The communication infrastructure, topology and features of a low-bandwidth data transmission link are discussed in this paper focusing on the SunSpec, DNP3 and SEP2 protocols. Yet, some critical comments are made regarding the practical interoperability of commercial inverters, also bordering cyber security matters.

关键词： Inverters Protocols Data communication Interoperability Cloud computing Servers Voltage control

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A genetic algorithm for the optimization of cable routing

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systems and Computers in Japan 2006年第7期37卷 61-71页

作者： Ma, Xuan Iida, Kazuhiro Xie, Mengchun Nishino, Junji Odaka, Tomohiro Ogura, Hisakazu Graduate School of Engineering University of Fukui Fukui City 910-8507 Japan Wakayama National College of Technology Gobo City 644-0023 Japan Faculty of Automation and Information Engineering Xi an University of Technology B Techno College Department of Electrical and Computer Engineering Wakayama National College of Technology Information Processing Society of Japan China Mechanical Design Society Department of Systems Engineering University of Electro-Communications Japan Society for Fuzzy Theory and Intelligent Informatics Japanese Academy of Facial Studies Japan Society of Kansei Engineering Graduate Program of Nuclear Power and Energy Safety Engineering Graduate School of Engineering Fukui University IEEE CS ACM IPSJ IEICE JSMBET Department of Human and Artificial Intelligent Systems JSAI Japan SOFT IEEE

In this paper the authors propose a structural method for a genetic algorithm (GA) for the optimization problem of cable routing in which cables have to be laid optimally. When there are no limits on the layout routes, the optimal routes for the individual cables can be found using the Dijkstra method in a finite discrete graph. However, when there are limits on the capacity in the layout routes, optimization cannot be performed using the Dijkstra method. The proposed GA is a two-level hierarchical GA that uses chromosome coding involving two levels. The routes for each cable and the combinations of cable routes are defined respectively, and layout route selection is optimized overall through genetic operations involving these levels. Block crossover and block mutation are used as genetic operations in the first level. In addition, a method to take advantage of lethal genes, which do not satisfy the constraints and are generated in the second level is used. Computer simulations confirm that the two-level hierarchical GA with these genetic operations functions effectively for the optimization problem of cable routing. © 2006 Wiley Periodicals, Inc.

关键词： Electric cable laying

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Multiobjective approach for power flow and unbalance control in low-voltage networks considering distributed energy resources

Multiobjective approach for power flow and unbalance control...

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Brazilian Power Electronics Conference, COBEP

作者： W. M. Ferreira D. I. Brandao F. G. Guimarães E. Tedeschi F. P. Marafão Graduate Program in Electrical Engineering Federal University of Minas Gerais Belo Horizonte MG Brazil Federal Institute of Education Science and Technology of Minas Gerais Ipatinga MG Brazil Department of Electric Power Engineering Norwegian University of Science and Technology Trondheim Norway Group of Automation and Integrated Systems Universidade Estadual Paulista Sorocaba SP Brazil

This paper proposes a multiobjective optimization technique that maximizes the active power generation from single-phase distributed generators, and minimizes the unbalance factor at the point of common coupling of the network. Such technique is incorporated into a centralized control strategy for optimal power flow control purpose. The centralized control strategy used herein is the Power-Based Control that coordinates the distributed units to contribute to the network's active and reactive power needs, per phase, in proportion of their power capacity. The simulation results of a simplified network with three single-phase distributed generators validate the proposal in terms of power flow control, voltage regulation and power quality.

关键词： Reactive power Optimization Power generation Genetic algorithms Load flow Voltage control Decision making

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