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International Conference on engineering of Modern Electric systems (EMES)

作者： Mircea Dulău Istvan Madaras Department of Electrical and Computer Engineering “Petru Maior” University Tîrgu-Mureş Romania Master at Automatic Systems of Industrial Process Control Faculty of Engineering “Petru Maior” University Tîrgu-Mureş Romania

The timber's drying process is a mandatory operation before any action of the wood processing. In the recent years, the fundamental research in the field of timber's drying has made progress, the physical laws regarding the removal of the water from the wood through different procedures (convection, vacuum, microwave etc.) being elucidated. The using of the calculus techniques allows the accurate simulation of heat and mass transfer phenomena, as well as of the mechanical aspects (internal stresses, deformations), which accompany the wood's drying process. The paper presents the implementation of the monitoring and the control system of the timber's conventional drying, using programmable controllers (Siemens), dedicated devices and dedicated software (Step 7).

关键词： Moisture Heating systems Monitoring process control Fans Heat transfer

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Heat and mass transfer in an adjacent internally-cooled membrane-based liquid desiccant dehumidifier (AIMLDD)

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Energy Procedia 2017年 142卷 3990-3997页

作者： Yu Yang Minlin Yang Weihao Huang Si-Min Huang Wei-Biao Ye Yuxiang Hong Frank G.F. Qin Youyuan Shao Key Laboratory of Distributed Energy Systems of Guangdong Province Dongguan University of Technology Dongguan 523808 China Department of Process Equipment and Control Engineering School of Mechanical Engineering Xiangtan University Xiangtan 411105 China Department of Chemistry and Chemical Engineering Lishui University Lishui 323000 Zhejiang China

An adjacent internally-cooled membrane-based liquid desiccant dehumidifier (AIMLDD) is proposed and used for air dehumidification. The AIMLDD is a parallel-plate membrane contactor, which contains cooling channels. The air and the solution streams are separated by selectively permeable membranes, while the solution and the water streams are separated by plastic plate. The air stream flows in a cross-flow arrangement with the solution stream, while the solution stream flows in a co-current flow arrangement with the water stream. Establish a mathematical model in a unit cell, which contains half of an air channel, a piece of membrane, a solution channel, a piece of plastic plate, and half of a cooling channel, to research the conjugate heat and mass transports in the AIMLDD. Use a finite difference method to solve the normalized equations governing momentum, heat and mass transports. The dehumidification amount, the efficiency and outlet parameters are then obtained. A continuous air dehumidification system based on the AIMLDD is set up to validate the numerical results. Compare the efficiency under different condition and different structure of the membrane contactor. It can be found that the dehumidification amount and the efficiency for the AIMLDD are higher than those for an adiabatic one.

关键词： Heat mass transfer Adjacent internally-cooled membrane dehumidifier Air dehumidification Parallel-plate Efficiency

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Dead-Time Compensator for Multi Time-delay systems:the Scalar Case

Dead-Time Compensator for Multi Time-delay Systems:the Scala...

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第36届中国控制会议

作者： Pedro Albertos Pedro García Qiang Chen Xiaoli Luan Fei Liu Department of Systems Engineering and Control Instituto de Automática e Informática Industrial Universitat Politècnica de València Key Laboratory of Advance Process Control for Light Industries Institute of Automation Jiangnan University

This paper deals with the control of simple process models where multiple time-delays appear. These delays can be input, output or state delays. For the case of input/output time-delays, a general solution is retrieved from the *** state time-delays, the scalar case is considered and a precompensator is used to cancel the delay. The proposed algorithms are applied to the control of a simple academic example.

关键词： Input/output time-delays State time-delays Unstable delayed systems

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Neural Adaptive control of Microgrid Frequency Regulation with Wind Power

Neural Adaptive Control of Microgrid Frequency Regulation wi...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Weiqiang Liu Chaoxu Mu Ding Wang Chao Luo Chao Ren Tianjin Key Laboratory of Process Measurement and Control Tianjin University Tianjin China School of Automation Southeast University Nanjing China The State Key Laboratory of Management and Control for Complex Systems Chinese Academy of Sciences Beijing China School of Electrical Engineering Wuhan University Wuhan China

Due to the uncertainty of power load demand and the stochastic power generation from renewable energy, frequency fluctuation becomes a major concern of power system, especially for a microgrid. In this paper, an improved proportional-integral (PI) controller based on the neural adaptive control method is proposed to deal with the load frequency control (LFC) problem in a microgrid with wind power. The designed neural adaptive control auxiliary controller is used to provide the adaptive supplement control signal to PI controller in a real-time manner. Simulation studies on a benchmark microgrid system are carried out between the proposed compound controller and traditional PI controller. The simulation results demonstrate the proposed method has a superior performance for stabilizing the frequency over the traditional PI control under disturbances from the load change and wind power.

关键词： Adaptive control Microgrids Frequency control Wind turbines Benchmark testing Power system stability

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Towards autonomous reconfiguration in distribution networks: An approach based on finite state automaton models

Towards autonomous reconfiguration in distribution networks:...

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International Conference in Energy and Sustainability in Small Developing Economies (ES2DE)

作者： Alena Košťálová Pedro M. S. Carvalho Marek Kubalčík Dep. of Computer and Communication Systems Tomas Bata University in Zlin Czech Republic Electrical Engineering and Computer Dep. Instituto Superior Tecnico Lisbon Portugal Department of Process Control Tomas Bata University in Zlin Czech Republic

The demand on distribution network reconfiguration abilities is increasing. This paper proposes a Finite State Automaton model of a distribution network that deals with topologically safe reconfiguration. Autonomous operation of distribution networks can be designed, analysed and implemented in day-to-day operation with the aid of these automata: through supervisory control. Two approaches to supervisor design are proposed. One for the normal operating mode and the other for the contingency mode. Simple and comprehensive examples illustrate the approaches.

关键词： Switches Automata Power cables Substations Electronic mail Power system reliability

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OPC UA hardware offloading engine as dedicated peripheral IP core

OPC UA hardware offloading engine as dedicated peripheral IP...

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IEEE International Workshop on Factory Communication systems (WFCS)

作者： Chris Paul Iatrou Leon Urbas Technical University of Dresden Chair for Process Control Systems Engineering

OPCUA is a promising candidate for achieving a vertical semantic integration of field devices in the next generation of industrial automation topologies. Microprocessing platforms embedded in sensors and actor do however not provide the memory and computing resources required to integrate OPC UA communication stacks. To enable the usage of OPC UA on limited platforms, this article introduces a dedicated, highly scalable hardware server stack, synthesizable on 75.800 μm 2 using 28 nm CMOS technology as well as FPGAs, that can process OPC UA as a peripheral component.

关键词： Engines Hardware Memory management Servers Fabrics IP networks Protocols

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Electron wave packet evolution under the influence of random electric field

Electron wave packet evolution under the influence of random...

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International Conference on Mathematical Methods in Electromagnetic Theory (MMET)

作者： D.I. Kulik S.I. Pavlik Yu.S. Oseledchik Department of Automated Systems of Process Control Zaporizhzhya State Engineering Academy Zaporizhzhya Ukraine Department of Automated Systems of Process Control Zaporizhzhya State Engineering Academy Ukraine

ISBN: (纸本)9781509019571

We consider an electron wave packet evolution in the external deterministic electric field with Gaussian white noise addition. An explicit expression was given for the averaged probability flux with Gaussian initial wave function. We show that the noise addition increases wave packet spreading rate, which has a significant influence on flux amplitude and may play both destructive and constructive role. This depends on the form of external deterministic field.

关键词： Electric fields Wave functions Electric potential Schrodinger equation Fourier transforms

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POWER-TO-HYDROGEN AND HYDROGEN-TO-X: LATEST RESULTS OF TASK 38 OF THE IEA HYDROGEN IMPLEMENTING AGREEMENT 7

POWER-TO-HYDROGEN AND HYDROGEN-TO-X: LATEST RESULTS OF TASK ...

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7th European Fuel Cell Piero Lunghi Conference, EFC 2017

作者： Lucchese, P. Mansilla, C. Dolci, F. Dickinson, R.R. Funez, C. Grand-Clément, L. Hilliard, S. Proost, J. Robinius, M. Salomon, M. Samsatli, S. CEA Université Paris Saclay Gif-sur-Yvette France European Commission Petten Netherlands Hydricity Systems Australia University of Adelaide Centre for Energy Technology Adelaide Australia Centro Nacional del Hidrógeno Puertollano Spain PersEE Paris France Clean Horizon Consulting Paris France Université Catholique de Louvain Division of Materials and Process Engineering Louvain-la-Neuve Belgium Forschungszentrum Jülich GmbH Jülich Germany Department of Chemical Engineering University of Bath Bath United Kingdom

ISBN: (纸本)9788882863241

Task 38 of the Hydrogen Implementing Agreement of the IEA is dedicated to the analysis of Power-to-Hydrogen and Hydrogen-to-X pathways, with a final objective of providing business developers and policy makers with recommendations to enable hydrogen as a key energy carrier for a sustainable integrated energy system. This paper offers an appraisal of the recent work, mostly dedicated to review and state-of-the-art analysis. © EFC 2017 - Proceedings of the 7th European Fuel Cell Piero Lunghi Conference.

关键词： Fuel cells

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Macromol. Rapid Commun. 13/2018

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Macromolecular Rapid Communications 2018年第13期39卷

作者： Qin Dai He Zhao Zhuangjun Fan Wentao Zhao Guangwei Wang Jimei Zhang Rong Hou Penghui Du Hongbin Cao Beijing Engineering Research Center of Process Pollution Control Division of Environment Technology and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Superlight Materials and Surface Technology Ministry of Education College of Material Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Department of Chemistry School of Science Tianjin University Tianjin 300072 China School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha 410114 China

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A 1-dodecanethiol-based phase transfer protocol for the highly efficient extraction of noble metal ions from aqueous phase

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Journal of Environmental Sciences 2015年第3期27卷 146-150页

作者： Dong Chen Penglei Cui Hongbin Cao Jun Yang State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences Research Centre for Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences

A 1-dodecanethiol-based phase-transfer protocol is developed for the extraction of noble metal ions from aqueous solution to a hydrocarbon phase, which calls for first mixing the aqueous metal ion solution with an ethanolic solution of 1-dodecanethiol, and then extracting the coordination compounds formed between noble metal ions and 1-dodecanethiol into a non-polar organic solvent. A number of characterization techniques, including inductively coupled plasma atomic emission spectroscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis demonstrate that this protocol could be applied to extract a wide variety of noble metal ions from water to dichlorometh- ane with an efficiency of 〉96%, and has high selectivity for the separation of the noble metal ions from other transition metals. It is therefore an attractive alternative for the extraction of noble metals from water, soil, or waste printed circuit boards.

关键词： Phase transfer 1-Dodecanethiol Extraction Noble metal ion Efficiency

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