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International Conference on Industrial Informatics

作者： Rafael Priego Aintzane Armentia Elisabet Estévéz Marga Marcos Dept. of Automatic Control and System Engineering ETSI Bilbao Basque Country University (UPV/EHU) Bilbao Spain Dept. Ingenieria Electrónica y Automática EPS de Jaén University of Jaén Jaén Spain

ISBN: (纸本)9781479966509

The continuous changes on the market and customer demands have forced modern automation systems to provide more strict Quality of Service (QoS) requirements such as load balance or full availability of the control system, among other characteristics. In order to cope with these demanding requirements, modern automation systems have started to incorporate novel design approaches which include reconfiguration mechanisms. Following this trend, this paper presents the use of MDE techniques and technologies, to help in the definition of the control system of reconfigurable automation plants. Directly from the model-based design, a model-based tool is derived that provides support for the generation of the elements that compose the reconfigurable control system.

关键词： MDE Availability Automation system Mechatronic components

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A Study of Circulating Current in MMC based HVDC system under an Unbalanced Grid Condition

A Study of Circulating Current in MMC based HVDC System unde...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Won-Seok Do Si-Hwan Kim Tae-Jin Kim Rae-Young Kim Dept. of Electrical and Biomedical Engineering Hanyang University Energy Electronics Control System Laboratory

ISBN: (纸本)9781479940318

This paper shows a study about circulating current of modular multilevel converter (MMC) based a high voltage direct current (HVDC) system under some unbalanced grid conditions. A basic structure of the MMC HVDC system is introduced and its system dynamics is analyzed. Based on the analysis, the modeling of circulating current and its control method under balanced or unbalanced grid condition are described. From the point of view in circulating current control, two kinds of power control methods are analyzed and their performances compared. In addition, in order to apply the power control methods, some practical considerations are proposed and described. Several simulation results performed in the PSIM software verify the proposed analysis and consideration of the power control methods under various grid conditions.

关键词： High Voltage Direct Current (HVDC) Modular Multilevel Converter (MMC) Circulating current

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Modelling a moving land-sea boundary using adaptive mesh refinement 10

Modelling a moving land-sea boundary using adaptive mesh ref...

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10th Coasts, Marine Structures and Breakwaters Conference 2013: From Sea to Shore - Meeting the Challenges of the Sea

作者： Furuyama, Shoichi Maihara, Yusuke Dept. of Electronics and Information Engineering Toyama National College of Technology 1-2 Ebie-Neriya Imizu Toyama933-0293 Japan Toyama National College of Technology Advanced Course of Control Information System Engineering 1-2 Ebie-Neriya Imizu Toyama933-0293 Japan

ISBN: (纸本)9780727759771

High resolution calculation for the Tsunami run-up simulation at Toyama-bay in Japan is achieved by using Adaptive Mesh Refinement (AMR) method. The method is tested at Hamana-lake for the tide simulation, the water level rising simulation at Toyama-bay and Tsunami runs-up simulation at Toyama-bay. AMR generated the fine mesh at the boundary line between the water and the land. In the case of the tide simulation at Hamana-lake, the reasonably agreement result with the experimental data was given by using the AMR. In the case of water level rising simulation, the method kept the reasonably constant of the total number of calculation meshes by deleting the fine meshes at the far from the interested region, and the method was applied Tsunami run-up simulation at the Toyama-bay.

关键词： Water levels

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analysis in DSC-PLL grid synchronization method under grid frequency variation

Analysis in DSC-PLL grid synchronization method under grid f...

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International Conference on Electrical Machines and systems (ICEMS)

作者： Jaedo Lee Hanju Cha Dept. of Instrument control & Electrical System Korea Institute of Nuclear Safety Daejeon Korea Dept. of Electrical Engineering Chungnam National University Daejeon Korea

ISBN: (纸本)9781479951635

In this paper, a new frequency adaptive DSC-PLL is proposed to improve the grid synchronization when the grid voltage is polluted by harmonics, unbalanced conditions and frequency deviated circumstances. A design method for the proposed PLL adaptive to input frequency variation is discussed, and the frequency adaptive DSC-PLL is evaluated by simulations to show their capability for detecting different harmonic components in a highly polluted grid conditions. Simulation results show the significant effects that mitigate harmonics, unbalance components and detect frequency error through the proposed PLL.

关键词： harmonics suppression phase locked loops synchronisation DSC-PLL grid synchronization method delayed signal cancellation frequency adaptive DSC-PLL frequency deviated circumstances grid frequency variation grid voltage unbalanced conditions DSC(Delayed Signal Cancellation) Frequency Locked Loop PLL(Phase Locked Loop)

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The use of genetic algorithms for speed and current controller designs for IPMSM drive

The use of genetic algorithms for speed and current controll...

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International Conference on Electrical Machines and systems (ICEMS)

作者： Pakorn Chottiyanont Mongkol Konghirun Wanchak Lenwari Dept. of Electrical Engineering King Mongkut's University of Technology Thonburi Thailand Dept. of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Thailand

ISBN: (纸本)9781479951635

Recently, speed and current controller have been developed for interior permanent magnet synchronous motor (IPMSM). Each method has its own advantage and limitation. However, in the commercial drive system, the controller should be easy to set up and tune in particular for operator, therefore the classical proportional plus integral (PI) controller has widely used due to its simple structure while achieving zero steady-state error. However finding out the parameters of the controller is not any easy task because of complex dynamics of IPMSM. For this reason, this paper presents a novel automated design employed genetic algorithm (GA) to optimize PI speed and current controller of IPMSM. The drive control system is designed on the basis of vector control scheme incorporated with the maximum torque per ampere (MTPA) control strategy to improve the drive performance. Simulation and experimental results verify the effectiveness of the proposed method.

关键词： Torque Optimization Genetic algorithms Stators Mathematical model Simulation Sociology

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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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Study on the reliability of power supply mode meeting different urbanfunctional area's needs

Study on the reliability of power supply mode meeting differ...

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International Conference on Power system Technology (POWERCON)

作者： Yabin Yang Zongxiang Lu Ying Qiao Zhiyuan Sun Haibo Li Dept. of Electrical Engineering Tsinghua University Beijing China Electrical Power Research Institute of Guangxi Power Grid occupied in the power system analysis

ISBN: (纸本)9781479950331

With the increasing contradiction between demand of power supply reliability and investment, Power supply mode meeting consumers' different need of reliability is a reasonable solution. The divisional but centralized urban functional areas provides possibility for it. This paper aims to research the consumer-oriented differential power supply modes which meeting different urban functional areas' needs. Several electricity consumption characteristics are analyzed to assess reliability needs of functional areas. The contribution value of key factors that affect distribution system's reliability be carried out by simulation. Considering reliability needs of different urban function areas, consumer-oriented differential power supply modes are designed.

关键词： Power system reliability Power supplies Interrupters Power cables Reliability engineering

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A design of bilateral servo system with self-tuning function

A design of bilateral servo system with self-tuning function

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International Conference on Advanced Mechatronic systems (ICAMechS)

作者： Hirofumi Ohtsuka Tomoaki Nakamura Dept. of Control and Information System Engineering Kumamoto National College of Technology Kumamoto Japan Kumamoto National College of Technology Advanced Course of Electronics and Information System Engineering Kumamoto Japan

Manual micromanipulation requires for operators to have enough experience and outstanding skill. A bilateral servo system attempts to convert difficult tasks so as to be felt easier for skilled operators. One of such a bilateral servo system, which reduces the displacement and expands the force, has been proposed by Kikuchi and Shiraishi[1]. However, concerning to the offset between a master manipulator's stiffness and a slave manipulator's one, its adverse effects of the operation stability becomes remarkable for the change of operator's dynamics. In an actual use, such offset may cause a heavy damage of the manipulated object by the operation. In this study, we propose a self-tuning mechanism which can eliminate such offset problem. And we have confirmed the effectiveness of the proposed method by numerical simulation.

关键词： Manipulators Force Numerical simulation Servomotors Steady-state

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Indirect position estimation method for switched reluctance motor using searching windings

Indirect position estimation method for switched reluctance ...

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International Conference on Electrical Machines and systems (ICEMS)

作者： Cheng Wang Zhiquan Deng Jun Cai Rongguang Hu College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing China School of Information and Control Nanjing University of Information Science and Technology Nanjing China Dept. Automatic Control and System Engineering University of Sheffield UK

This paper presents a new method to estimate rotor position indirectly for 12/8 switched reluctance motor (SRM). In this method, searching windings and main windings are wound on stator together. The structure of searching windings is designed to reduce induced voltages caused by main windings. High frequency voltage is applied to searching windings and the position signal is derived from induced high frequency signals. High frequency voltage can be injected from standstill to high speed in this method, thus it can operate in a wide speed range. The proposed method is implemented on a 12/8 SRM and the experimental results demonstrate the validity of this method.

关键词： Windings Reluctance motors Rotors Inductance Estimation Coils

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A sensorless vector drive using self-dynamics for interior permanent magnet machine without external signal injection

A sensorless vector drive using self-dynamics for interior p...

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Annual Conference of Industrial Electronics Society

作者： Sang-il Kim Rae-Young Kimt Dept. of Electrical and Biomedical Engineering Hanyang University Energy Electronics Control System Laboratory Seoul Republic of Korea Hanyang University Seongdong-gu Seoul KR

This paper describes a new sensorless control using self-dynamics without an external signal injection. Instead of the signal injection, it utilizes the self-dynamics of the control loop that inherently adjusts the magnitude of inverters current and voltage in the switching frequency range. Due to no existence of the external signal, the proposed method provides several advantages including reduction of audible noise and core loss, while achieving a good dynamic performance with a high current controller bandwidth. The detail operation principle and the control structure are described, various simulation and experiment results are provided in order to verify the effectiveness and feasibilities.

关键词： Voltage control Rotors DSL Switching frequency Pulse width modulation Torque Sensorless control

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