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Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

作者： Min Li Rong Zeng Dawei Yang Zhanqing Yu Ruihai Li Lei Liu Bo Zhang Huaying Zhang State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing China Technology Research Center China Southern Power Grid Company Limited China

ISBN: (纸本)9781424456215

The corona performance and the electromagnetic environment of the transmission system has become a crucial issue that has been taken into consideration in the line design, and among which audible noise (AN) is one of the most important factors. The wind in the high altitude area is mostly strong, and could greatly influence the AN. This paper, based on the high altitude HDVC test line, studied the characteristics of AN generated by the transmission line, and analyzed the influence of wind velocity and wind direction on the AN lateral profile.

关键词： Acoustic noise HVDC transmission Testing Wind speed Corona Power transmission lines Microphone arrays Voltage Electromagnetic compatibility Power engineering and energy

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Tests on electromagnetic environment of ultra HVDC transmission lines in high altitude region

Tests on electromagnetic environment of ultra HVDC transmiss...

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Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

作者： Zhanqing Yu Rong Zeng Min Li Ruihai Li Lei Liu Bo Zhang Zheng Zhang Huaying Zhang State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing China Technology Research Center China Southern Power Grid Company Limited China

ISBN: (纸本)9781424456215

The Ultra High Voltage DC power transmission technique is developed quickly in China but used barely in the world. Corona phenomenon in high altitude region is more serious, and corresponding electromagnetic environment is more severe as well. A UHVDC test lines are completed for tests in Kunming, China, with an altitude of 2100 m. An automotive electromagnetic environment testing system was installed under the line. Measurement of electromagnetic environment was carried out. Radio interference, audible noise, resultant electric field and ion current density at ground level were measured at different voltage from ±800kV to ±1000kV, and atmosphere conditions including sunny, rainy and cloudy weather. The measured result show some difference with those acquired at sea level and is significant for further studies of corona mechanism under high altitude condition. Measured results were compared with the calculated results.

关键词： HVDC transmission Atmospheric measurements Sea measurements Electromagnetic measurements Voltage Corona Power transmission Automotive engineering System testing Electromagnetic interference

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Analysing on characteristics of lightning shielding failure of UHVAC double circuit transmission line based on leader progression method

Analysing on characteristics of lightning shielding failure ...

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Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

作者： Zhiyong Wang Shaoan Wang Zhanqing Yu Yinan Geng Rong Zeng Jinliang He Zhizhao Li Guangzhou Power Supply Bureau China Southern Power Grid Company Limited Guangzhou China Department of Electrical Engineering State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing China

ISBN: (纸本)9781424456215

Shielding failure of lightning is the key problem for safe operation of UHV transmission lines. Taking the feature of 1000KV AC double circuit transmission lines into account, the leader progression method with proper criterion was employed. The lightning shielding failure rate of top phase, middle phase and bottom phase of two different transmission line tower types were compute, in three different geography conditions. The research work is helpful for improving the lightning performance of UHV transmission lines.

关键词： Failure analysis Lightning Distributed parameter circuits Conductors Power transmission lines Transmission line theory Voltage Corona Poles and towers Power system simulation

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Nanosecond-pulse Dielectric Barrier Discharge Using Magnetic Compression Solid-State Pulsed Power

Nanosecond-pulse Dielectric Barrier Discharge Using Magnetic...

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IEEE International Power Modulator and Hogh Voltage Conference

作者： Tao Shao Yang Yu Cheng Zhang Zheng Niu Dongdong Zhang Jue Wang Yaohong Sun Ping Yan Yuanxiang Zhou Institute of Electrical Engineering Chinese Academy of Sciences State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Electrical Engineering Department Tsinghua University

ISBN: (纸本)9781424471317

Dielectric barrier discharge excitated by unipolar pulsed power is a promising approach for producing non-thermal plasma at atmospheric pressure. A magnetic compression solid-state pulse power generator is used to produce dielectric barrier discharge (DBD). The generator is capable of providing repetitive pulses with the voltage of up to 30 kV and duration of 70 ns at a 300 Ω resistive load. This paper illustrates electrical characteristic and luminous emissions of DBD excitated by repetitive unipolar nanosecond-pulses in atmospheric air. Different from common DBD excitated by high-voltage AC sources, discharge current of DBD in the experimental investigation can be on an order of tens of amperes. When the DBD is created using two liquid electrodes, the luminous emissions from the obverse and flank sides of liquid electrodes show that no filament is observed and the discharge is homogeneous and diffuse in the whole discharge regime.

关键词： Dielectric barrier discharge Pulsed power Magnetic compression Repetitive nanosecond pulses Atmospheric pressure air Gas discharge Homogeneous discharge

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Optimisation of AMT gear shifting strategy in hybrid electric vehicles

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International Journal of Vehicle Autonomous systems 2009年第1-2期7卷 1-17页

作者： Montazeri-Gh, Morteza Asadi, Mohammad Department of Mechanical Engineering Systems Simulation and Control Laboratory University of Science and Technology Narmak Tehran 16844 Iran

This paper describes a methodological approach for the optimization of the Automated Manual Transmission (AMT) gear shifting strategy in parallel Hybrid Electric Vehicles (HEVs). The novelty of this approach is the development of a driving cycle to take the influence of traffic conditions into account in the process of optimisation. This approach provides the necessary results to investigate the influence of driving condition on optimised shifting strategy. In this study, the optimisation problem is formulated using a Genetic Algorithm (GA) based on the minimisation of vehicle Fuel Consumption (FC) and emissions while maintaining drivability conditions. The results obtained from simulation study show the effectiveness of the approach, resulting in a considerable reduction in fuel use and emissions. The optimisation is much more effective in congested driving condition where frequent gear shifting is necessary. © 2009 Inderscience Enterprises Ltd.

关键词： Genetic algorithms

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Developing scenarios for research into upset recovery simulation

Developing scenarios for research into upset recovery simula...

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AIAA Modeling and simulation Technologies Conference 2010

作者： Fucke, Lars Biryukov, Vladimir Grigorev, Maxim Rogozin, Vladimir Groen, Eric Wentinktt, Mark Field, Joris Soemarwoto, Bambang Abramov, Nikolay Goman, Mikhail Khrabrovitt, Alexander Boeing Research and Technology Europe Madrid Spain Gromov Flight Research Institute Zhukovsky Russia TNO Defence Security and Safety Soesterberg Netherlands National Aerospace Laboratory NLR Amsterdam Netherlands De Montfort University Leicester United Kingdom Central Aerohydrodynamic Institute Zhukovsky Russia not available Cañada Real de las Merinas 1-3 28042 Madrid Spain Flight Test Center Bldg. 2 Garnaev Str Zhukovsky Moscow region 140182 Russia Aircraft Department Bldg. 2 Garnaev Str Zhukovsky Moscow region 140182 Russia not available Kampweg 5 3756 DE Soesterberg Netherlands Simulation and Operator Performance Anthony Fokkerweg 2 1059 CM Amsterdam Netherlands not available Anthony Fokkerweg 2 1059 CM Amsterdam Netherlands Department of Engineering The Gateway Queens Building 3.14 LE1 9BH United Kingdom Department of Engineering The Gateway Gateway House 6.56 LE1 9BH United Kingdom Flight Dynamics and Control Systems Department Zhukovsky street 1 140180 Russia

ISBN: (纸本)9781624101526

This paper gives an overview of the European Framework Programme 7 project SUPRA-simulation of Upset Recovery in Aviation, a European research effort involving nine partnering organizations from the Netherlands, Austria, Spain, Russia, the United Kingdom and Germany aiming at developing new concepts of ground-based upset recovery simulation for use on hexapod-type as well as centrifuge-based simulators. Along with a general overview of the project objectives the paper reports on the status of the R&D effort including some of the first important decisions taken within the project such as the definition of a set of upset scenarios to be used by SUPRA for benchmarking of the concepts developed by the project. © 2010 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： Recovery

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Driving condition recognition for genetic-fuzzy HEV control

Driving condition recognition for genetic-fuzzy HEV control

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2008 3rd International Workshop on Genetic and Evolving Fuzzy systems, GEFS

作者： Montazeri-Gh, M. Ahmadi, A. Asadi, M. Department of Mechanical Engineering Systems Simulation and Control Laboratory IUST Systems Simulation and Control Laboratory Department of Mechanical Eng Iran University of Science and Technology Narmak Tehran 16844 Iran

ISBN: (纸本)9781424416134

This paper presents a genetic-fuzzy approach for hybrid electric vehicle control based on driving pattern recognition and prediction. In this approach, data collection in the real traffic conditions is employed for classification of several driving patterns. These driving patterns represent different traffic conditions e.g. congested, urban and so on. The analysis used for the driving pattern recognition is based on the definition of microtrips. In addition, a Markov chain modeling is used for traffic condition prediction based on the modeling of probability of the sequence of microtrips. The driving pattern prediction is then utilized for optimization of the HEV control parameters using a genetic-fuzzy approach. In this approach, a fuzzy logic controller (FLC) is designed to be intelligent so as to manage the internal combustion engine (ICE) to work in the vicinity of its optimal condition. The fuzzy membership function parameters are then tuned using the genetic algorithm (GA). Finally, simulation results are presented to show the effectiveness of the approach for reducing the HEV fuel consumption and emissions. © 2008 IEEE.

关键词： Forecasting

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Application of virtual prototyping for optimization of fuzzy-based active suspension system

Application of virtual prototyping for optimization of fuzzy...

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International Symposium on Mechatronics and Its Applications, ISMA

作者： M. Montazeri-Gh M. Soleymani N. Mehrabi Systems Simulation and Control Laboratory Department of Mechanical Engineering Iran University of Science and Technology Tehran Iran

Optimization of fuzzy active suspension (AS) system in previous works was based on simple basic models in which many effective degrees of freedom are neglected. In this paper, application of virtual prototyping for genetic optimization of AS fuzzy controller is presented. A full-3D vehicle model is developed for this purpose using ADAMS software. Moreover, a fuzzy logic controller (FLC) is proposed for the AS system and is applied to the virtual prototype. The FLC parameters are then tuned based on the virtual prototype responses using genetic algorithm in MATLAB-ADAMS co-simulation process. The optimization objective function comprises conflicting ride comfort, suspension travel and energy consumption parameters. simulation results reveal the superior performance of the optimized controller in vehicle ride comfort improvement as well as suspension travel and energy consumption reduction.

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Pole placement approaches for linear and fuzzy systems

Pole placement approaches for linear and fuzzy systems

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6th International Symposium on Intelligent systems and Informatics, SISY 2008

作者： Preitl, S. Precup, R.-E. Clep, P.A. Ursache, I.-B. Fodor, J. Škrjanc, I. Dept. of Automation and Applied Informatics Politehnica University of Timisoara Timisoara Romania Institute of Intelligent Engineering Systems Budapest Tech. Polytechnical Institution Budapest Hungary Laboratory of Modelling Simulation and Control University of Ljubljana Ljubljana Slovenia

The paper investigates several pole placement methods in the linear case and suggests a new pole placement method by means of fuzzy linear equations. The linear methods concern the constant real part poles, the poles places on a circle, Butterworth configurations without and with the correction of the imaginary part, the pole-zero cancellation, and the poles placed on an ellipse. Low order systems are considered. The pole placement methods are compared by the digital simulation of control systems' behaviors with respect to the modification of the reference input. The conclusions are useful for continuous control systems, and they can be extended easily to digital control systems including quasi-continuous ones. ©2008 IEEE.

关键词： Poles

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Design and control of a Three-Phase Grid-Connected Photovoltaic System with Developed Maximum Power Point Tracking

Design and Control of a Three-Phase Grid-Connected Photovolt...

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23rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2008), vol.2

作者： Zhou Dejia Zhao Zhengming Mohamed Eltawil Yuan Liqiang The State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Tsinghua University Beijing China

In this paper an optimum design and control of three-phase grid-connected PV system has been proposed and analyzed. Also, a developed maximum power point tracking (MPPT) controller that uses the PV array differential power to voltage (dP/dV) as an index to provide the reference voltage of maximum power point (MPP) quickly and accurately is presented. The control scheme of a three phase current-controlled space vector pulse-width modulation (SVPWM) inverter in rotating synchronous coordinate d-q with the proposed MPPT algorithm and feed-forward compensation is discussed. The PV grid-connected system controller employs multi-loop control with the filter inductor current of the inverter in the inner loop to achieve fast dynamic response and the outer loop to control dc bus voltage for MPPT. The design method provided in the paper for the controller parameters and filter proved to be very practical and effective. Both the power quality into the grid and power factor correction comply with standards IEEE 929-2000. Good agreement is obtained between simulation and experimental results which illustrated the high performance of the proposed approach.

关键词： Digital signal processor Grid-connected PWM inverter MPPT Photovoltaic (PV) system PI compensators Unity power factor

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