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IEEE PES Innovative Smart Grid Technologies

作者： Arman Kiani Anuradha Annaswamy Institute of Automatic Control Engineering Technische Universitt Mnchen Department of Mechanical Engineering Massachussets Institute of Technology

ISBN: (纸本)9781457721588

The Smart Grid paradigm is influenced primarily by the need to integrate renewable energy from wind and solar resources. Two main tools that have been proposed to carry out integration are (i) decision and control that makes use of all available information via a cyber-physical infrastructure that includes communication, and computation, (ii) Demand Response (DR), the concept of controlling loads using smart meters and devices as well as economic signals. Given that the pertinent information is available at multiple time-scales and from multiple sources, decision and control algorithms need to necessarily have a distributed, hierarchical structure. In this paper, we propose a distributed cyber-physical control architecture to match energy supply to energy load at the sub-transmission and distribution levels. A hierarchical model of the overall cyber-physical energy system is introduced, and includes the dynamics of the grid at the primary, secondary, and tertiary levels. With a goal of ensuring frequency regulation using optimal allocation of resources including renewable energy resources (RER), a distributed control methodology is presented and numerically evaluated in the presence of intermittency in the RERs.

关键词： Smart grids Renewable energy Resource utilization stepping controls Smart meters energy load Frequency control Control Architecture optimal allocation Distribute computer algorithms intermittency ENERGY SYSTEMS energy supply auxiliary transmission

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A Contribution to Haptic Teleoperation of Aerial Vehicles

A Contribution to Haptic Teleoperation of Aerial Vehicles

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IEEE/RSJ International Conference on Intelligent Robotics and Systems

作者： Abeje Y. Mersha A. Rüesch Stefano Stramigioli Raffaella Carloni Faculty of Electrical Engineering Mathematics and Computer Science University of Twente The Netherlands. Autonomous Systems Lab Eidgen?ssische Technische Hochschule Zürich Switzerland.

ISBN: (纸本)9781467317375

This video presents practical realizations and comparison between three different haptic tele-control algorithms of aerial vehicles. These strategies, besides addressing the classical issues of stability and transparency, provide different alternatives for overcoming challenges that are peculiar to haptic teleoperation of aerial vehicles. The experimental results show the performance and effectiveness of the proposed control algorithms even in the presence of significant time delays.

关键词： transparency presence overcoming Transparency vehicle Haptic Device Component Touch remote operation ANTENNA computer algorithms

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Adaptive Glide Slope Control for Autonomous Airdrop Systems

Adaptive Glide Slope Control for Autonomous Airdrop Systems

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American Control Conference

作者： Michael Ward Mark Costello Department of Aerospace Engineering Georgia Institute of Technology Atlanta GA

ISBN: (纸本)9781457710957

Airdrop systems provide a unique capability of delivering large payloads to undeveloped and inaccessible locations. Guided airdrop systems based on steerable, ram-air parafoils have been developed with the goal of improving the precision and accuracy of air-dropped payload delivery. In practice, the gliding ability of the ram-air canopies can actually create major problems for airdrop systems by making them more susceptible to winds and allowing them to achieve far greater miss distances than were previously possible. Research and development work on guided airdrop systems has focused primarily on improving the guidance algorithm. By comparison, the navigation and control algorithms have changed little since the initial guided systems were developed. Furthermore, the control mechanisms have not changed since the invention of the ram-air canopy in the 1960's. This work seeks an improvement in landing accuracy over current state of the art airdrop systems through the incorporation of advanced control algorithms and novel control mechanisms. The key concepts utilized are system identification in real-time during each flight and glide slope control through in-flight incidence angle variation coupled with symmetric trailing edge brake deflection. Simulation and flight test results demonstrate a factor of two improvement in landing accuracy with the use of glide slope control. Simulation results also demonstrate that the adaptation of internal models with in-flight system identification can dramatically improve landing accuracy in situations where there is significant uncertainty in the system flight characteristics.

关键词： Glide slope computer algorithms System identification cage set FLIGHT TESTS control mechanism Inventions Payload

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Active Power Control in a Grid Connected Distributed Generation System via Time Delay Method

Active Power Control in a Grid Connected Distributed Generat...

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IEEE Power and Energy Society General Meeting

作者： Ali K. Kaviani Kang Yen Department of electrical and Computer Engineering Florida International University Miami FL 33174

ISBN: (纸本)9781467327275

This paper applies time delay approach to control the active power in a grid connected distributed generation unit under varying load conditions. The control algorithm is developed in time domain;therefore, it is (almost) independent of the frequency and phase of the grid voltage. As a result it does not require frequency measurement, phased locked loop (PLL) system, and dq-transformation which reduces the complexity of the control algorithm. However, it is still possible to control the output voltage, or reactive power, at the common coupling point, independent of the dispatched active power.

关键词： Index Terms--Active power control distributed generation time delay method computer algorithms active power ELECTRIC POWER GENERATION SYSTEMS grids Power control Grid distributed power generation output voltage variable amplitude loading frequency measurement time delay Reactive power TIME-DOMAIN

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Colour harmonisation for images and videos via two-level graph cut

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IET IMAGE PROCESSING 2011年第7期5卷 630-643页

作者： Tang, Z. Miao, Z. Wan, Y. Jesse, F. F. Beijing Jiaotong Univ Inst Informat Sci Beijing 100044 Peoples R China

A two-level graph cut algorithm is presented to deal with the coherence preservation problem that appears when trying to perform colour harmonisation on images and videos. Region-level graph cut is a technique used to avoid harmonising disconnected areas belonging to the same object with different harmonic hues. Pixel-level graph cut is a technique used to obtain a spatially coherent harmonisation. The authors extend this algorithm to videos by employing optical flow, region growing and foreground extraction algorithms, and present a temporally consistent video harmonisation method. The proposed approach overcomes several shortcomings of the existing methods, and the experiments demonstrate the effectiveness of it.

关键词： IMAGING systems GRAPH theory computer algorithms COLOR PIXELS IMAGE processing COHERENCE (Optics)

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A Novel High-Voltage Half-Bridge Converter with Phase-Shifted Active Rectifier

A Novel High-Voltage Half-Bridge Converter with Phase-Shifte...

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IEEE Interantional Conference on Industrial Technology

作者： Andrei Blinov Volodymyr Ivakhno Volodymyr Zamaruev Dmitri Vinnikov Oleksandr Husev Tallinn University of Technology Estonia 2National Technical University "Kharkiv Polytechnical Institute " Ukraine

ISBN: (纸本)9781467303408;9781467303422

The half-bridge converter with phase-shifted active rectifier allows us to avoid drawbacks of the traditional hard-switched half-bridge converter with a diode rectifier, such as high semiconductor losses and parasitic oscillations in the inverter. This paper introduces a novel improved control algorithm for a full-bridge phase-shifted active rectifier, allowing reduction of the energy circulation during its operation. The advantages of the algorithm are verified with a small-scale converter prototype. The experimental results were found in full accordance with expected waveforms.

关键词： diode rectifier half-bridge Phase shift Converters PARASITIC OSCILLATION Rectifiers computer algorithms

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Control of High-speed Permanent Magnet Synchronous Machine

Control of High-speed Permanent Magnet Synchronous Machine

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Annual Conference on IEEE Industrial Electronics Society

作者： Jan Chysky Jaroslav Novak Martin Novak Czech Technical University in Prague Faculty of Mechanical Engineering Department of Instrumentation and Control Engineering

ISBN: (纸本)9781467324199

This paper presents results of the control algorithm development for vector control of permanent magnet synchronous machine realised on DSP TMS320F2812. Results of experiments and project of new control unit based on FPGA are presented. The setup was tested with permanent magnet motor up to 42000 RPM, nominal torque 1.2 Nm and nominal current 11 A.

关键词： Permanent magnet synchronous machines computer algorithms control unit Vector control Pest Control Standing Orders Field programmable gate arrays Nominal

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A new adaptive high speed control algorithm used for a FOC or a DTC PMSM drive strategies

A new adaptive high speed control algorithm used for a FOC o...

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Annual Conference on IEEE Industrial Electronics Society

作者： Flah Aymen Sbita Lassaad National school of engineering of Gabes University of Gabes National School of engineering of Gabes University of Gabes

ISBN: (纸本)9781467324199

This paper presents a new adaptive high speed control algorithm (AHSC) for the permanent magnet synchronous motor (PMSM) drives. This AHSC algorithm has been built by using the Model Reference Adaptive System (MRAS) and with reference to the fed inverter variables limitation. The proposal control technique is mathematically formulated and implemented in the two conventional motor control strategies such as the Field Oriented Control (FOC) in one hand and the Direct Torque Control (DTC) on the other hand. The proposed AHSC is tested through computer simulation using MATLAB/Simulink, where the system efficiency and robustness is verified for a wide speed range and under the two cited drive strategies. The obtained simulations results are satisfactory and confirmed the usefulness of the overall proposed control algorithm.

关键词： computer algorithms Permanent magnet synchronous machines direct torque control speed range Automobile driving DRIVES model reference adaptive control High speed computer Simulation

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VOLTAGE REGULATION (MV) BY MEANS OF Q(U) - SIMULATION AND MEASUREMENT ON A 12 MVA PV POWER PLANT

VOLTAGE REGULATION (MV) BY MEANS OF Q(U) - SIMULATION AND ME...

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Workshop on Integration of Renewables into the Distribution Grid

作者： Adrian CONSTANTIN Radu Dan LAZAR Soren Baekhoj KJAER Danfoss Solar Inverters A/S

ISBN: (纸本)9781622763153

Open loop reactive power (Q) control function of the local voltage (U) measured at the inverter's terminals is one possibility to comply with the BDEW's MV grid regulations [1] in Germany, while other countries are considering to apply this solution as well. A better understanding of the stability limits for such a control algorithm is required when applying it to large PV plants or PV dominated grids. A dynamic RMS simulation model of a big PV plant including Q(U) control is developed. The model is compared with real life measurements in the PV plant and the local laboratory. Various study cases are further on performed in order to assess the voltage stability. An upper stability limit can be found depending on the grid connection parameters in the point of common coupling (PCC).

关键词： Polydnaviridae Qualified Unit stability limits Voltage regulation computer algorithms Power Plants Voltage stability point of common coupling MOTOR VEHICLE TRAFFIC ACCIDENTS

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Predictive Controller Design for a Sensorless IPMSM Speed Control System

Predictive Controller Design for a Sensorless IPMSM Speed Co...

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Annual Conference on IEEE Industrial Electronics Society

作者： Jui-Ling Chen Tian-Hua Liu Department of Electrical Engineering National Taiwan University of Science and Technology

ISBN: (纸本)9781467324199

This paper proposes a predictive controller design for a sensorless interior permanent magnet synchronous motor drive system. The controllers include a current-loop predictive controller and a speed-loop predictive controller with an external load estimator. In addition, the estimated error of the rotor position estimator is reduced due to the using of the on-line tuning stator resistance and q-axis inductance. By using the proposed control algorithms, the closed-loop sensorless interior permanent magnet synchronous motor drive system can achieve fast transient responses, satisfactory load disturbance responses, and good tracking responses. A digital signal processor, TMS 320F2812, is used to perform the rotor position estimating algorithm and the predictive control algorithm. As a result, the hardware is very simple. Experimental results can validate the theoretical analysis and show that the predictive controllers have better performance than the PI controllers.

关键词： Predictive controllers computer algorithms drive train controller design PI control Sensors rotor position Permanent magnet synchronous machines stator resistance speed control system

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