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International Conference on Renewable Energy Research and Applications (ICRERA)

作者： Péter Stumpf István Nagy István Vajk Department of Automation and Applied Informatics Budapest University of Technology and Economics MTA-BME Control Engineering Research Group Budapest Hungary

A novel microgrid control is proposed in the paper. Independent control of active and reactive power for each unit connected to the common microgrid bus is realized in addition to the power sharing in the designed ratio among the units. The concepts of voltage droop and frequency droop applied widely are incorporated here as well. The price paid for the independent control is the reference frame transformation needed in the novel control.

关键词： Microgrids Voltage control Vectors Reactive power Power conversion Renewable energy sources

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Wind energy penetration into distributed generation and its static and dynamic features

Wind energy penetration into distributed generation and its ...

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International (EPE-PEMC) Power Electronics and Motion control Conference

作者： Peter Stumpf Rafael. K. Jardan Istvan Nagy Zoltan Varga Economics Department of Automation and Applied Informatics Budapest Budapest University of Technology Hungary MTA-BME Control Engineering Research Group Budapest

Wind Energy Conversion Systems (WECS) are penetrating into Microgrids as they fit well to the concept of Distributed Generation. The variable speed Doubly Fed Induction Generators (DFIG) are most frequently used. Changing the speed (DFIG) according to the aerodynamic law, maximum wind power can be harvested. The paper investigates the way of speed change by rotor voltage in steady-state and in transient. Steady state characteristics and simulation results for dynamic behavior are included.

关键词： Rotors Stators Generators Microgrids Wind turbines Wind energy Wind power generation

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Comparison of two sampling techniques of SVM applied in sensorless Field Oriented controlled IM drive

Comparison of two sampling techniques of SVM applied in sens...

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Péter Stumpf Rafael K. Járdán István Nagy István Vajk Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary MTA-BME Control Engineering Research Group Budapest Hungary

ISBN: (纸本)9781479924004

Field Oriented control (FOC) technique is one of the mostly applied algorithm to control the speed and the flux of a three-phase electric drive. The paper focuses on high speed or high-pole count motor FOC drives when both the sampling over reference frequency ratio F and the carrier over reference frequency m f is low. The paper presents that the stability range of a speed sensor-less FOC motor drive can be extended by recalculating the reference signal of the Space Vector Modulation (SVM) algorithm at the negative peak of the carrier signal as well by approximating the rotor flux angle change over one half carrier period. The result was verified by computer simulations and laboratory measurements.

关键词： Torque Support vector machines Current measurement Resistors Stators Pulse width modulation Torque measurement

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Comparative study of ultrahigh-speed induction generators with self-excitation

Comparative study of ultrahigh-speed induction generators wi...

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Mediterranean Conference on control and automation (MED)

作者： R. K. Jardan Z. Varga I. Nagy Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary MTA-BME Control Engineering Research Group Budapest Hungary

ISBN: (纸本)9781479959020

In the paper a comparative analysis is carried out on seven different self-excitation methods that have been developed in the past decades taking into account the technical and economical features of the methods compared. A novel solution based on resonant circuit application is described in more detail, and the theoretical considerations have been confirmed by computer simulations and laboratory test results.

关键词： Reactive power Inductors Topology Stators Capacitance Switches

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Mechanism and kinetic studies on the synthesis of glyceraldehyde via anodic oxidation of glycerol 21

Mechanism and kinetic studies on the synthesis of glyceralde...

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21st International Congress of Chemical and Process Engineering, CHISA 2014 and 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2014

作者： Beltrán-Prieto, J.C. Slavik, R. Kolomazík, K. Pecha, J. Tomas Bata University in Zlin Department of Automation and Control Engineering Faculty of Applied Informatics Nam. T. G. Masaryka 5555 Zlin760 01 Czech Republic Tomas Bata University in Zlin Department of Environmental Engineering Protection Faculty of Technology Nam. T. G. Masaryka 275 Zlin762 72 Czech Republic

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Experiences with basic control course supported by matlab/simulink exercises

Experiences with basic control course supported by matlab/si...

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10th IFAC Symposium on Advances in control Education, ACE 2013

作者： Kalave, Eniko Kósáné Bézi, István Bars, Ruth Institute of Physics University of Debrecen Debrecen Hungary Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary Department of Automation and Applied Informatics MTA-BME Control Engineering Research Group Budapest University of Technology and Economics Budapest Hungary

ISBN: (纸本)9783902823434

A basic control course is taught for electrical engineering students at the University of Debrecen, Hungary. Through two semesters the students get a basic knowledge on control concepts. Every week there are 2 hours of theoretical lectures immediately followed by 2 hours of MATLAB based interactive computer laboratories. In the curriculum besides the conventional material new aspects of control design such as Youla parametrization have also been included. Practical considerations as e.g. controller saturation are also dealt with. The paper reviews briefly the curriculum and the educational process of this program. © IFAC.

关键词： Curricula

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control of Air Flow in Air Heating Set - Algebraic Approach using Structured Singular Value

Control of Air Flow in Air Heating Set - Algebraic Approach ...

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Mediterranean Conference on control & automation

作者： Marek Dlapa Department of Automation and Control Engineering Faculty of Applied Informatics TBU in Zlin

ISBN: (纸本)9781479909964

The paper deals with the robust control of air-flow in air heating set. The identification is performed using step responses and approximation via second order system. The controller is designed using the structured singular value (SSV or μ) and algebraic approach. Since the cost function is nonconvex the optimization cannot be done using standard tools. Hence an evolutionary algorithm - Differential Migration (DM) is employed yielding good results in this case. The functionality of the controller is verified through experiments on the real plant.

关键词： Algebraic approach controller design PID control Structured singular value Differential Migration Evolutionary algorithms

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control of air flow in air heating set algebraic approach using structured singular value

Control of air flow in air heating set algebraic approach us...

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2013 21st Mediterranean Conference on control and automation, MED 2013

作者： Dlapa, Marek Department of Automation and Control Engineering Faculty of Applied Informatics TBU in Zlin nám. T. G. Masaryka 5555 760 01 Zlín Czech Republic

ISBN: (纸本)9781479909971

The paper deals with the robust control of airflow in air heating set. The identification is performed using step responses and approximation via second order system. The controller is designed using the structured singular value (SSV or μ) and algebraic approach. Since the cost function is nonconvex the optimization cannot be done using standard tools. Hence an evolutionary algorithm - Differential Migration (DM) is employed yielding good results in this case. The functionality of the controller is verified through experiments on the real plant. © 2013 IEEE.

关键词： Three term control systems

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Experiences with Basic control Course Supported by MATLAB/SIMULINK Exercises

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IFAC Proceedings Volumes 2013年第17期46卷 309-314页

作者： Enikő Kósäné Kalave Istvän Bézi Ruth Bars Institute of Physics University of Debrecen Debrecen Hungary Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary Department of Automation and Applied Informatics Budapest University of Technology and Economics MTA-BME Control Engineering Research Group Budapest Hungary

关键词： control education matlab control exercises course curriculum Youla parametrization integrator windup

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Fractional order PDμ control of a visual servoing manipulator system

Fractional order PDμ control of a visual servoing manipulat...

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European control Conference (ECC)

作者： Cosmin Copot Clara M. Ionescu Corneliu Lazar Robin De Keyser Department of Electrical energy Systems and Automation Ghent University Belgium Department of Automatic Control and Applied Informatics Technical University of Iasi Romania

ISBN: (纸本)9781479901890

In this paper, a fractional order PD μ controller based on visual features is presented. A manipulator robot with 6 degrees of freedom and an eye-in-hand camera configuration is employed to design a visual servoing control architecture. The image based control law was designed using point features. A Matlab simulator which implements the visual control architecture was developed and the results were compared with a classical integer order controller. The validity of the visual based controllers is shown by the simulation results which demonstrate that the proposed approach based on a fractional order controller has a stable and convergent behavior when dealing with visual servoing applications. The fractional order PD μ controller provides better performances in comparison with an integer order PD controller.

关键词： Cameras Visualization Robot kinematics Visual servoing

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