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IEEE International Conference on Computational Electromagnetics (ICCEM)

作者： Jinrong Su Chunhui Yao Xue Chen Wenmei Zhang Dept. Electric and Information Engineering Shanxi University Taiyuan Shanxi China Command and control division North Automatic Control Technology Institute Taiyuan China College of Physics and Electronics Shanxi University Taiyuan Shanxi China

ISBN: (纸本)9781538612422

Shielded through-silicon vias (S-TSV) filled with multi-walled carbon nanotubes (MWCNT) in the via and the shielded layer, and benzocyclobutene or silicon in the insulation layer is presented in this paper. Then, the equivalent transmission line models of the two S-TSVs are established. Based on the model, the forward transmission coefficient and attenuation constant are calculated and the impact of quantum capacitance C q of MWCNT on the transmission performance of S-TSVs is analyzed. The results indicate that the performance of S-TSVs with Si insulation layer in 0-100 GHz can be significantly improved by C q . Also, the performance of S-TSV filled with BCB above 40 GHz can be improved. In addition, the temperature effect of silicon can be balanced by C q . As a result, the heat stability of S-TSV with silicon insulation layer is improved.

关键词： Quantum capacitance Through-silicon vias Integrated circuit modeling Silicon Insulation Electron devices

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Challenges on drive circuit design for series-connected SiC power transistors 11th

Challenges on drive circuit design for series-connected SiC ...

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11th European Conference on Silicon Carbide and Related Materials, ECSCRM 2016

作者： Peftitsis, Dimosthenis Rabkowski, Jacek Nee, Hans-Peter Undeland, Tore Dept. of Electric Power Engineering NTNU Norwegian University of Science and Technology Trondheim Norway Institute of Control and Industrial Electronics Warsaw University of Technology Warsaw Poland Power Electronics Research Group Dept. of Electric Power and Energy Systems KTH Royal Institute of Technology Stockholm Sweden

ISBN: (纸本)9783035710434

The breakdown voltages of the currently available 1.2 and 1.7-kV classes Silicon Carbide (SiC) transistors are not sufficient to operate under medium blocking voltages. On the other hand, the fabrication yields of the available high-voltage SiC transistors are still low, resulting in low current capabilities. Series-connection of several individual transistors is the solution to meet medium blocking voltages and high current ratings. This paper identifies the most crucial design challenges of gate and base drive circuits suitable for driving fast-switching series-connected SiC transistors. These challenges are presented and analyzed using Finite Element Method simulations and experimental investigations. © 2017 Trans Tech Publications, Switzerland.

关键词： Silicon carbide

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Co-operative Estimation for Source Localisation using Binary Sensors

Co-operative Estimation for Source Localisation using Binary...

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IEEE Annual Conference on Decision and control

作者： Daniel D. Selvaratnam Iman Shames Dimos V. Dimarogonas Jonathan H. Manton Branko Ristic Dept. Electrical and Electronic Engineering University of Melbourne Automatic Control School of Electrical Engineering KTH Royal Institute of Technology. Electronics and Telecommunications Engineering RMIT University

This paper considers the problem of localising a signal source using a team of mobile agents that can only detect the presence or absence of the signal. A background false detection rate and missed detection probability are incorporated into the assumptions. An estimation algorithm is proposed that discretizes the search environment into cells, and uses Bayesian techniques to approximate the posterior probability of each cell containing the source. Analytical results are presented for a range of specific cases, and simulations are used to investigate more complex scenarios.

关键词： Estimation Convergence Bayes methods Indexes Sensors Atmospheric measurements Monte Carlo methods

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Clustering in block Markov chains

arXiv

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arXiv 2017年

作者： Sanders, Jaron Proutière, Alexandre Yun, Se-Young Kth Royal Institute of Technology School of Electrical Engineering Dept. of Automatic Control Osquldasväg 10 Stockholm10044 Sweden Delft University of Technology Faculty of Electrical Engineering Mathematics and Computer Science Dept. of Quantum and Computer Engineering Mekelweg 4 Delft2628CD Netherlands Korea Advanced Institute of Science and Technology Dept. of Industrial and Systems Engineering 291 Daehak-ro Eoeun-dong Yuseong-gu Korea Republic of

This paper considers cluster detection in Block Markov Chains (BMCs). These Markov chains are characterized by a block structure in their transition matrix. More precisely, the n possible states are divided into a finite number of K groups or clusters, such that states in the same cluster exhibit the same transition rates to other states. One observes a trajectory of the Markov chain, and the objective is to recover, from this observation only, the (initially unknown) clusters. In this paper we devise a clustering procedure that accurately, efficiently, and provably detects the clusters. We first derive a fundamental information-theoretical lower bound on the detection error rate satisfied under any clustering algorithm. This bound identifies the parameters of the BMC, and trajectory lengths, for which it is possible to accurately detect the clusters. We next develop two clustering algorithms that can together accurately recover the cluster structure from the shortest possible trajectories, whenever the parameters allow detection. These algorithms thus reach the fundamental detectability limit, and are optimal in that sense. Copyright © 2017, The Authors. All rights reserved.

关键词： Asymptotic analysis

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Optimal distributed control for platooning via sparse coprime factorizations

Optimal distributed control for platooning via sparse coprim...

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2016 American control Conference, ACC 2016

作者： SabǍu, Şerban OarǍ, Cristian Warnick, Sean Jadbabaie, Ali Electrical and Computer Engineering Dept. Stevens Institute of Technology HobokenNJ United States Automatic Control Dept. University Politehnica Bucharest Romania Information and Decision Algorithms Laboratories Faculty of the Computer Science Department Brigham Young University United States Electrical and Systems Engineering Dept. University of Pennsylvania United States

ISBN: (纸本)9781467386821

We introduce a novel distributed control architecture for disturbances attenuation in heterogeneous platoons of linear and time-invariant autonomous agents that inherits the performance achievable by the leader-follower control policies. We provide a Youla-like parameterization for the class of all distributed controllers such that the sparsity constraints are imposed on the controllers' left coprime factors, outlining a new concept of structural constraints in distributed control. The proposed scheme lends itself to optimal controller design via norm based costs, it guarantees string stability and completely eliminates the accordion effect from the behavior of the platoon. The distributed controller is proven to attain global optimality for heterogeneous platoons and H2 costs and can easily reconfigure such as to remain optimal during formation merging/exiting maneuvers. The scheme is amenable to a GPS time base synchronization mechanism, allowing for the exact compensation of the time delays induced by the wireless communications. © 2016 American automatic control Council (AACC).

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Optimal distributed control for platooning via sparse coprime factorizations

Optimal distributed control for platooning via sparse coprim...

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American control Conference (ACC)

作者： Şerban Sabău Cristian Oară Sean Warnick Ali Jadbabaie Electrical and Computer Engineering Dept. Stevens Institute of Technology Hoboken NJ Automatic Control Dept. University “Politehnica” Bucharest Faculty of the Computer Science Department Brigham Young University Electrical and Systems Engineering Dept. University of Pennsylvania

We introduce a novel distributed control architecture for disturbances attenuation in heterogeneous platoons of linear and time-invariant autonomous agents that inherits the performance achievable by the leader-follower control policies. We provide a Youla-like parameterization for the class of all distributed controllers such that the sparsity constraints are imposed on the controllers' left coprime factors, outlining a new concept of structural constraints in distributed control. The proposed scheme lends itself to optimal controller design via norm based costs, it guarantees string stability and completely eliminates the accordion effect from the behavior of the platoon. The distributed controller is proven to attain global optimality for heterogeneous platoons and ℋ 2 costs and can easily reconfigure such as to remain optimal during formation merging/exiting maneuvers. The scheme is amenable to a GPS time base synchronization mechanism, allowing for the exact compensation of the time delays induced by the wireless communications.

关键词： Vehicles Standards Decentralized control Stability analysis Linear systems Transfer functions Electronic mail

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Current-stress reduction of the neutral inductor in a rectifier with two outputs

Current-stress reduction of the neutral inductor in a rectif...

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IEEE Energy Conversion Congress and Exposition

作者： Wenlong Ming Qing-Chang Zhong Dept. of Automatic Control and Systems Engineering The University of Sheffield Sheffield S1 3JD UK Dept. of Electrical and Computer Engineering Illinois Institute of Technology Chicago IL 60616 USA

ISBN: (纸本)9781509007387

In this paper, a recently-reported single-phase rectifier with two outputs (RECTO) is further improved to reduce the current stress of the neutral inductor in the rectifier. The reduction is achieved by moving the neutral inductor away from the path of the grid current. As a result, the inductor only carries the differential current of the dual loads. Since the maximum value of the differential current is much smaller than that of the grid current, the current stress of the neutral inductor can be significantly reduced, and the size of the inductor becomes much smaller, which helps improve the power density of the RECTO. In theory, the current stress can be reduced by at least three times and the inductor size by at least nine times. It is worth noting that the current stress of the switches and the other features of the RECTO, e.g., operation principles, independent DC outputs and unity power factor, are not affected. Comparative experimental results are presented to demonstrate the reduction.

关键词： Inductors Legged locomotion Stress Capacitors Voltage control Reactive power Integrated circuit modeling inductors Biped locomotion integrated circuit modelling Voltage regulation Reactive power Capacitors Rectifiers differential current Stress (mechanics) Stressing

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OWC on-shore wave power plants modeling and simulation

OWC on-shore wave power plants modeling and simulation

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IEEE International Conference on Emerging Technologies and Innovative Business Practices for the Transformation of Societies (EmergiTech)

作者： A.J. Garrido I. Garrido J. Lekube M. de la Sen E. Carrascal Automatic Control Group Department of Automatic Control and Systems Engineering University of the Basque Country (UPV/EHU) Bilbao Spain Dept. Aut. Control and Systems Eng. University of the Basque Country (UPV/EHU) Bilbao Spain Department of Electricity and Electronics University of the Basque Country (UPV/EHU) Spain Automatic Control Group - ACG University of the Basque Country (UPV/EHU) Spain

ISBN: (纸本)9781509007073

The Spanish Renewable Energies Plan (SREP) for 2011-2020 and the European Energy Road Map are promoting the use of renewable sources as the best way to avoid the undesired global warming, and in particular, the use of Ocean Energy. Within the different types of on-shore wave-based ocean energy devices, Oscillating Water Column (OWC) converters are one of the widely used ones. An OWC device is basically composed by a capture chamber with a turbo-generator module attached to it. This paper presents the modeling and simulation of OWC on-shore wave power plants. The results are particularised for the case of the Mutriku's power plant and then validated by means of experimental data.

关键词： Turbines Mathematical model Conferences Business Torque Data models

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Impedance shaping for parallel operation of inverters in islanded AC microgrids

Impedance shaping for parallel operation of inverters in isl...

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IEEE International Symposium on Power electronics for Distributed Generation systems (PEDG)

作者： Shlomo Gadelovits Visakan Kadirkamanathan Qing-Chang Zhong Alon Kuperman Dept of Automatic Control and Systems Engineering The University of Sheffield UK Dept of Automatic Control and Systems Engineering Illinois Institute of Technology USA Dept of Electrical and Electronics Engineering Ariel University Israel

This paper proposes a new decentralized control strategy for parallel inverters operating in an islanded Microgrid. The proposed technique uses the Uncertainty and Disturbance Estimation (UDE) strategy in order to generate a virtual output impedance while keeping the voltage of the internal Elctro-Motive Force (EMF) source equal for all the inverters in the system. The system achieves accurate current sharing over a broad spectrum, which is proportional to the inverter capacity. Simulation results are provided to illustrate the performance of this method 1 .

关键词： Inverters Impedance Voltage control Harmonic analysis Mathematical model Microgrids Load modeling

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Selection of 5 kW converter leg for power electronic system for residential buildings

Selection of 5 kW converter leg for power electronic system ...

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European Conference on Power electronics and Applications

作者： Marcin Zygmanowski Jaroslaw Michalak Michal Jelen Grzegorz Jarek Jan Popczyk Faculty of Electrical Engineering Dept. of Power Electronics Electrical Drives and Robotics SILESIAN UNIVERSITY OF TECHNOLOGY ul. B. Krzywoustego 2 Gliwice Poland Faculty of Electrical Engineering Institute of Power Systems and Control SILESIAN UNIVERSITY OF TECHNOLOGY ul. B. Krzywoustego 2 Gliwice Poland

ISBN: (纸本)9781509014101

Three converter leg variants are analyzed for low power converter used for power electronic system for residential buildings. The two-level Si-IGBT and SiC-MOSFET converters are compared with Si-IGBT three-level T-type converter. Power losses generated in each of these converters over a predicted period of 20 years of operation are contrasted with the cost of converter options. The detailed selection procedure for output inductor is presented in this paper. This procedure shows the influence of the inductor parameters like number of turns, air gap length on its losses, cost and size. Theoretical approach is verified with simulations and experimental results.

关键词： Design IGBT Silicon Carbide (SiC) MOSFET Microgrid

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