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作者： Cai, Jun Zhong, Qing-Chang Stone, David Dept. Automatic Control and Systems Engineering University of Sheffield SheffieldSI 3JD United Kingdom Dept. Electronics and Electrical Engineering University of Sheffield SheffieldSI 3JD United Kingdom

ISBN: (纸本)9781479940325

In hybrid energy systems, batteries and supercapacitors are usually taken as storage mechanisms for smoothing output power, start-up transition, and various load conditions. As a result, developing hybrid power conversion systems has become an attractive research topic. In this study, a compact non-isolated bidirectional DC-DC converter is proposed to interface two DC power sources, which mainly benefit with reduced power switches. In detail, only two switches are needed while for conventional systems four switches are required. Although the number of switches is reduced by half, the proposed converter is still proficient for energy diversification from two energy sources individually or simultaneously. Another benefit of the proposed converter is its extensibility. Several converters are given by easily extending the proposed converter to different applications. They also feature with reduced power switches compare to conventional systems. Detailed analysis on the topology and control algorithm of the proposed converter are given. Real-time simulation results are provided to verify the validity of the proposed system. © 2014 IEEE.

关键词： Topology

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Study on an improved Normal Form solution and reduced-order mode reconstruction in power system

Study on an improved Normal Form solution and reduced-order ...

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IEEE Region 10 International Conference TENCON

作者： Zhouqiang Wang Qi Huang Sichuan Provincial Key Lab of Power System Wide-area Measurement and Control University of Electronic Science and Technology of China (UESTC) Chengdu Sichuan China Dept. of Electrical Engineering Sichuan Engineering Technical College (SCETC) Deyang Sichuan China University of Electronic Science and Technology of China Chengdu CN

ISBN: (纸本)9781479986422

With the polynomial vector space decomposition by using Normal Form theory, the normalized analytical solutions of modal resonance are derived, which solves that the traditional Normal Form solution cannot be easily obtained under resonant condition. Based on the solution, from the viewpoint of whether the modal interaction couples and resonates or not, the nonlinear terms are decomposed into four types, i.e., uncoupled nonresonant terms, coupled nonresonant terms, uncoupled resonant terms and coupled resonant terms. The corresponding modes are categorized into 5 types, i.e., single modes, uncoupled nonresonant modes, coupled nonresonant modes, uncoupled resonant modes and coupled resonant modes. A reduced-order mode reconstruction based on least square method to estimate the coefficients of higher-order interactional modes is proposed. This might be potentially a new approach to cope with the challenge from huge amount of higher-order modes in higher-order nonlinear analysis. Two case studies are presented to analyze the types and reconstructions of the nonlinear modes, 2nd- and 3rd- order terms, which verifies the effectiveness of the proposed approach.

关键词： Mathematical model Power system dynamics Yttrium Couplings Least squares methods Eigenvalues and eigenfunctions

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Synchronverter-based Transformerless PV Inverters

Synchronverter-based Transformerless PV Inverters

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Annual Conference of the IEEE Industrial Electronics Society

作者： Wen-Long Ming Qing-Chang Zhong Dept. Automatic Control and Systems Engineering The University of Sheffield

ISBN: (纸本)9781479940318

In this paper, a transformerless PV inverter is proposed, which is formed by adding a neutral leg into conventional half bridge inverter. It consists of one neutral leg and one inverter leg. The presence of the neutral leg enables the direct connection between the ground of PV panels and the ground. Two main benefits are then obtained. First, the common mode currents are completely eliminated because the stray capacitors between the PV panels and the grid neutral line are bypassed. Another benefit is the voltage of the PV is only required to be higher than the peak value of the grid voltage, which is same as that of conventional full bridge inverter. In addition, the synchronverter technology designed for three-phase inverters is extended to a single-phase case to design the controller of the inverter leg. As a result, the proposed inverter becomes more grid-friendly. The control of the two legs are independent with each other, which means the controller design much easier. The performance of the whole system is evaluated in detail with the provided real-time simulation results.

关键词： Common model current Photovoltaic Transformerless inverter Half bridge inverter Neutral leg Synchronverter

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A Model-based Approach for Achieving Available Automation systems

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IFAC Proceedings Volumes 2014年第3期47卷 3438-3443页

作者： R. Priego A. Armentia D. Orive E. Estévez M. Marcos University of the Basque Country Department of System Engineering and Automatics Bilbao 48013 Spain Universidad de Jaén Dept. Of Electronics and Automatic Control Jaen Spain

Nowadays automation systems are required to be flexible in order to cope with the ever changing requirements of the applications in terms of complexity, extensibility or dynamism. The use of reconfiguration techniques helps to meet these demanding requirements, but at the same time increase the complexity of the systems. This paper presents a supervisor architecture that allows maintaining the availability of a control system in spite of failures such as a node crash, by means of reconfigurations at the control level. To do this, the advantages that Model-Driven Development technology provides have been explored.

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Fostering automatic control students to become innovators 19

Fostering automatic control students to become innovators

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19th IFAC World Congress on International Federation of automatic control, IFAC 2014

作者： Johnsson, Charlotta Yang, Qinmin Nilsson, Carl-Henric Jin, Jun Larsson, Andreas Warell, Anders Dept. of Automatic Control Lund University Lund Sweden Control Science and Engineering ZheJiang University Hangzhou China Business Adminstration Lund University Lund Sweden School of Management ZheJiang University Hangzhou China Dept. of Design Sciences Lund University Lund Sweden

ISBN: (纸本)9783902823625

Today, innovation is a key word for many universities, as it constitutes an important part of most universities' public and scientific outreach task. Many universities are striving to increase the number of innovations generated at the university. A common method is to provide various support for research projects e.g.;providing researchers with information about international patent rights (IPR), offering administrative or financial help concerning patent applications, giving entrepreneurship and start-up support, etc. However, fostering innovators and entrepreneurs can start already in undergraduate/graduate courses, i.e. long before a student potentially reaches the research level. We believe that key factors for success in this matter are diversity and freedom. A course that strives to promote innovation capability must allow for students with different backgrounds and different curricula to meet and work together, and must allow for students to freely use their current knowledge within new contexts. This is generally not a setting provided in traditional undergraduate/graduate courses. This article describes the execution and outcome of an graduate course "international Market-Driven engineering (iMDE)" in which diversity and freedom are key factors. The course is international and multi-disciplinary in terms of students, teachers and subjects. Graduate students with prior knowledge in automatic control constitute one important part of the course population. We believe that the diversity amongst the students, and their freedom when it comes to both innovation process and product, provides a promising platform in which seeds of ideas can grow into conceptual prototypes that build a solid foundation for full-scale innovations. On of the iMDE-projects, the Elderly Accessible Chair, or EA Chair, with its automated scanning and automatic seat-provider functionality, is one concrete example of this. © IFAC.

关键词： Students

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Designing Robotic Avatars in Second Life - A Tool to Complement Robotics Education

Designing Robotic Avatars in Second Life - A Tool to Complem...

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IEEE Global engineering Education Conference

作者： Catalin Buiu Mihai Gansari Dept. of Automatic Control and Systems Engineering Politehnica University of Bucharest

ISBN: (纸本)9781479931927

This paper presents some considerations on a new educational approach aimed at complementing the traditional robotics education. The main idea and contribution is to introduce students to Second Life (a free 3D social virtual world) and to the Linden Scripting Language (the Second Life programming language with a syntax similar to C) and then to ask them to design robotic avatars replicating low and medium complexity behaviors which they have previously seen or programmed for simulated or real robots. This approach brings flexibility in working time and a definite social dimension which add to the benefits of the traditional classroom education. Results from a survey conducted with students taking a Robotics and Virtual Reality course demonstrate the validity of this approach in stimulating the students in learning.

关键词： Robot control Avatars Simulation Virtual reality

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Introduction

Introduction

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International Conference on Electrical engineering, Computing Science and automatic control (CCE)

作者： Felipe Gómez Castañeda Francisco Rodríguez Henríquez Wen Yu Liu Vacuum Electronics National Laboratory Beijing Vacuum Electronics Institute Beijing China Dept. Electrical Engineering Daejeon Korea Advanced Institute of Science and Technology TERA Laboratory South Korea Vacuum Electronics National Laboratory School of Physical electronics University of Electronic Science and Technology of China Chengdu Sichuan China Automatic Control Mexico

This year we are celebrating the 12th International Conference, and the eighth edition in which its organization includes the participation of three academic departments at CINVESTAV: Electrical engineering, Computer Science and automatic control. The conference remains as a specialized forum where local research groups can present their recent results and proposals, interact with each other, and have the opportunity to become aware of the recent research and developments from leading institutions abroad, too. Also, the interaction with technological industry managers and government officers, keeps a special place in the activities of the conference.

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Particle filter-based Gaussian process optimisation for parameter inference

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IFAC Proceedings Volumes 2014年第3期47卷 8675-8680页

作者： Johan Dahlin Fredrik Lindsten Division of Automatic Control Linköping University Sweden Dept. of Engineering University of Cambridge United Kingdom

We propose a novel method for maximum-likelihood-based parameter inference in nonlinear and/or non-Gaussian state space models. The method is an iterative procedure with three steps. At each iteration a particle filter is used to estimate the value of the log-likelihood function at the current parameter iterate. Using these log-likelihood estimates, a surrogate objective function is created by utilizing a Gaussian process model. Finally, we use a heuristic procedure to obtain a revised parameter iterate, providing an automatic trade-off between exploration and exploitation of the surrogate model. The method is profiled on two state space models with good performance both considering accuracy and computational cost.

关键词： Maximum Likelihood Parameter Estimation Gaussian Processes Sequential Monte Carlo Machine Learning Bayesian Optimisation

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Abstracts from the 1st International Symposium on Decision Support in Anaesthesia and Intensive Care

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International journal of clinical monitoring and computing 2016年第1期14卷 49-68页

作者： D. Streifert N. Lutter E. Van der Vorst J. Mulier B. Schwilk U. Bothner R. Muche W. Friesdorf K. J. Ruskin A. F. de Geus G. E. Wiersma R. Huet H. Neuffer F. Fischer U. J. Christensen P. F. Jensen J. Jacobsen H. Ørding A. M. Brambrink V. Goel D. F. Hanley K. Becker H. D. Shaffner L. J. Martin N. V. Thakor R. C. Koehler R. J. Traystman M. Quintel M. Apin J. Martin M. Messelken R. Dieterle-Paterakis J. Hiller P. Milewski H. Gross U. Foehring N. Weiler B. Eberle W. Heinrichs W. Höltermann M. van Wickern D. M. Linton J. J. Ross D. G. Mason M. D. Pullman N. D. Edwards M. Doi R. J. Gajraj H. Mantzardis G. N. C. Kenny R. Markgraf G. Deutschinoff L. Pientka T. Scholten J. Maljers St. Walther A. Santevecci R. Ranieri Department of Anaesthesiology University of Erlangen-Nuernberg Erlangen Germany University Hospital Gasthuisberg B Leuven Belgium Department of Anaesthesiology University of Ulm Ulm Germany Yale University School of Medicine New Haven USA Department of Anesthesiology University Hospital Groningen RB The Netherlands Dept. Computer-Aided Circuit Design University of Erlangen-Nuernberg Erlangen Germany Dept. of Anaesthesiology Herlev Hospital University of Copenhagen Herlev Denmark Department of Anaesthesiology Johannes Gutenberg-University Medical School Mainz Germany The Johns Hopkins Medical Institution Baltimore USA Institut für Anästhesiolgie und operative Intensivmedizin Klinikum Mannheim Fakultät für klinische Medizin Universität Heidelberg Heidelberg Germany Department for Anaesthesiology and Intensive Care Medicine Hospital “Am Eichert” Goeppingen Germany Physikalisch-Technische Bundesanstalt Berlin Germany Klinik für Anaesthesiologie & Operative Intensivmedizin Klinikum Benjamin Franklin Freie Universitaet Berlin Berlin Germany Department of Anaesthesia and Intensive Care Medicine University Hospital Marburg Germany Medical Intensive Care Department of Medicine Hadassah Medical Organisation Jerusalem Israel Department of Anaesthetics University of Sheffield Northern General Hospital Sheffield UK Department of Automatic Control & Systems Engineering University of Sheffield Sheffield UK University Department of Anaesthesia HCI International Medical Centre Glasgow UK Department of Internal Medicine Allgemeines Krankenhaus für die Stadt Hagen University of Witten/Herdecke Witten Germany Plexus Medical Group Amsterdam Amsterdam The Netherlands Network Division USA Dept. of Anesthesiology and Intensive Care Università Cattolica del Sacro Cuore - Roma (Italy) Italy

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A Compact Power Converter for Hybrid Energy systems

A Compact Power Converter for Hybrid Energy Systems

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Annual Conference of the IEEE Industrial Electronics Society

作者： Jun Cai Qing-Chang Zhong David Stone Dept. Automatic Control and Systems Engineering The University of Sheffield Dept. Electronics and Electrical Engineering The University of Sheffield

ISBN: (纸本)9781479940318

In hybrid energy systems, batteries and superca-pacitors are usually taken as storage mechanisms for smoothing output power, start-up transition, and various load conditions. As a result, developing hybrid power conversion systems has become an attractive research topic. In this study, a compact non-isolated bidirectional DC-DC converter is proposed to interface two DC power sources, which mainly benefit with reduced power switches. In detail, only two switches are needed while for conventional systems four switches are required. Although the number of switches is reduced by half, the proposed converter is still proficient for energy diversification from two energy sources individually or simultaneously. Another benefit of the proposed converter is its extensibility. Several converters are given by easily extending the proposed converter to different applications. They also feature with reduced power switches compare to conventional systems. Detailed analysis on the topology and control algorithm of the proposed converter are given. Real-time simulation results are provided to verify the validity of the proposed system.

关键词： DC-DC converter Bidirectional Non isolated Topology Reduced power switches Hybrid energy systems

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