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Industry Applications Society Annual Meeting (IAS), 2010 IEEE

Date 3-7 Oct. 2010

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Displaying Results 1 - 25 of 131
  • [Title page]

    Publication Year: 2010 , Page(s): 1
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  • [Copyright notice]

    Publication Year: 2010 , Page(s): 2
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  • IAS 2010 Executive Board

    Publication Year: 2010 , Page(s): 3 - 6
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  • IAS 2010 Society Council

    Publication Year: 2010 , Page(s): 7 - 14
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  • IAS 2010 Committee Roster

    Publication Year: 2010 , Page(s): 15
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  • IAS 2010 Organization Diagram

    Publication Year: 2010 , Page(s): 16
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  • A Complete Modeling and Simulation of Induction Generator Wind Power Systems

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (762 KB) |  | HTML iconHTML  

    This paper presents the modeling and simulation of wind power systems based on two different induction generators; the squirrel-cage induction generator (SCIG) and the doubly-fed induction generator (DFIG). The techniques of direct grid integration of SCIG system and independent power control of DFIG system are discussed. Particularly, to solve the droop in distribution line voltage in SCIG system, a reactive power static compensator (STACOM) is used and a comparison of distribution line voltage is conducted between the SCIG and DFIG systems. Besides, in DFIG system, a fitting curve for optimal power versus speed is proposed for the turbine model and a cross-coupling relation between three phase choke and stator-side converter is also emphasized. Both wind power systems and their grid integration techniques are modeled and simulated in Matlab/Simulink. The results demonstrated the characteristics of both systems under varying wind speeds. Compared to the conventional constant speed SCIG system, variable speed DFIG reveals its superiority in terms of optimal power capture as well as constant distribution line voltage. View full abstract»

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  • A Conjugate Gradient Method for the Solution of the Inverse Heating Problem in Thermoforming

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (593 KB) |  | HTML iconHTML  

    Finding the setpoints of heater temperatures such that the sheet will achieve the desired temperature at the end of the heating cycle is known as the inverse heating problem (IHP) in thermoforming. Although a major portion of the heat is transferred from the oven to the sheet by radiation, conduction and convection also have a significant contribution in sheet heating. This makes the inverse heating problem more complex. In addition, the IHP is often ill-posed in a thermoforming process, making the solution unstable. In this paper, a conjugate gradient method is used to solve the IHP in the control of sheet temperature. In developing the method, computational cost is considered such that it can be implemented as a real-time algorithm in the controller. The performance of the proposed method for solving IHP, and thereby the corresponding sheet temperature controller, are tested in simulation at different operating conditions and compared with the conventional method of solving IHP based on the pseudo-inverse of the view factor matrix. The efficiency of the proposed method for the estimation of heater setpoints and the accuracy of the controller are evidenced by the results, showing promise for prospective real-time applications. View full abstract»

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  • A Control Method for Improvement in the Tandem Hot Metal Strip Rolling Process

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (328 KB) |  | HTML iconHTML  

    The tandem rolling of hot metal strip is a highly complex nonlinear process and as such presents an extremely difficult control challenge. This challenge is further exacerbated by the hostile hot metal rolling environment which precludes the location of certain sensors to measure variables that are important for control. Our previous work using a state-dependent Riccati equation technique for control of the tandem cold metal rolling process carries over well as a basis for the development of an improved method for control of the much more complex tandem hot metal strip rolling process. We present in this paper a comprehensive model of this process plus the results of our initial efforts toward the development of a suitable process controller. The strong possibility of significant improvement in the quality of the final product is shown by the results of simulations with the new controller is coupled to the model. View full abstract»

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  • A Dynamic Dynamometer for Testing of Mining DC Motors

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (1)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1698 KB) |  | HTML iconHTML  

    This paper describes the development of a 2.2 MW DC electric machine based dynamometer for the cyclic testing of motors used in mining applications. The dynamometer, through the application of sophisticated control, is able to simulate the real dynamic digging conditions of an electric rope shovel. The paper will discuss the facility and the control algorithms to implement the dynamic dynamometer. Simulation results will be presented. View full abstract»

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  • A Laboratory Analysis of Plasma Based Hybrid Techniques for Treating Engine Exhaust

    Publication Year: 2010 , Page(s): 1 - 6
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (787 KB) |  | HTML iconHTML  

    A detailed study on the removal of pollutants (NOx, aldehydes and CO) from the exhaust of a stationary diesel engine is carried out using barrier discharge hybrid plasma techniques. The objective of the study is to make a comparative analysis. For this purpose, the exhaust treatment was carried out in two stages. In the first stage, the exhaust was treated with plasma process and plasma-adsorbent hybrid process. The effectiveness of the two processes with regard to NOx removal and by-product reduction was discussed. In the second stage, the exhaust was treated by plasma and plasma-catalyst hybrid process. The effectiveness of the two processes with regard to pollutants (NOx, CO) removal and by-product reduction was analyzed. Finally, a comprehensive comparison of different techniques has been made and feasible plasma based hybrid techniques for stationary and non-stationary engine exhaust treatments were proposed. View full abstract»

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  • A MEMS Sensor for Gas Detection in High Voltage Oil Filled Equipment

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (924 KB) |  | HTML iconHTML  

    This paper addresses protection of oil insulated power equipment, e.g. transformers, using a MEMS sensor system to augment or replace existing protection techniques. Traditional technologies used for protection and analysis involve pressure and temperature sensing, gas chromatography and/or a Buchholz relay. A MEMS sensor is described to augment or replace such sensors. The proposed device is immersed within the insulating fluid, e.g. oil, and primarily consists of multiple micro scale turbines centrally shafted to a MEMS generator. The device utilizes relative differences in velocity, pressure and flow rate, of gas emanating from stressed or degrading insulation. A differential electrical output is produced which can be RF or photon coupled to a user interface. View full abstract»

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  • A New Implementation Method of Wavelet Packet Transform Differential Protection for Power Transformers

    Publication Year: 2010 , Page(s): 1 - 10
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (678 KB) |  | HTML iconHTML  

    This paper presents an innovative implementation of the wavelet packet transform using Butterworth passive filters for differential protection of power transformers. The proposed implementation is based on designing cascaded stages of high pass 3rd order Butterworth filters with cut-off frequencies identical to the cut-off frequencies of wavelet packet transform associated digital quadrature mirror filters. These high pass filters are designed to extract the second level high frequency components present in the three-phase differential currents. The extraction of these frequency components is required in order to detect and classify transients in three-phase power transformers. The output of the designed Butterworth high pass filters is utilized to initiate a trip signal in case of internal fault currents. The 3rd order Butterworth high pass filters are designed to simplify their practical implementation as well as their integration with the differential protective relay for the tested power transformer. Different magnetizing inrush, through-fault and internal fault currents are investigated for different loading conditions. Performances of the proposed Butterworth passive filter-based differential relay are compared with those of the digital wavelet packet transform-based relay. Comparison results show that the Butterworth filter wavelet packet transform-based differential relay is able to provide a low cost good diagnosis and fast responses to internal fault currents. View full abstract»

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  • A New Method for Estimation and Control of Temperature Profile over a Sheet in Thermoforming Process

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1448 KB) |  | HTML iconHTML  

    This paper presents a new method for the estimation of surface temperature of a sheet using temperature sensors at different positions of the sheet. The proposed method is developed and designed in such a way that it can estimate the temperature profile over the entire sheet through its spatial harmonics and control the spatial harmonics to obtain the desired temperature profile. Computational cost is also considered during the development of the proposed method. A PI controller is used to control each spatial harmonic to achieve the desired temperature profile over the sheet. The proposed estimation method of the temperature profile is based on the two-dimensional FFT. Each component of the two-dimensional space temperature harmonics is controlled by adjusting the heater temperatures. The performance of the proposed temperature estimation technique is tested in simulation for different desired temperature profile to compare with a simple method of temperature estimation based on the weighted average temperature of the sensors surrounding the location of interest. Thereafter, the performance of the proposed temperature control technique based on the spatial harmonics is compared with the conventional control technique in simulation. The superiority of the proposed method for the estimation of temperatures and hence the accuracy of the developed controller and its prospective real-time application is evidenced by the results. View full abstract»

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  • A New Mobile IGBT Inverter HV Test System for ESPs

    Publication Year: 2010 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1433 KB) |  | HTML iconHTML  

    The system performance of electrostatic precipitator systems depends heavily on the type and properties of the high voltage power supply. Switched mode type power supplies like IGBT inverters have been proven very beneficial for that purpose during the last decade in many applications. It has even been possible to increase the electrical power significantly, in many applications a factor of 2 can be achieved, which leads to a significant improvement of the dust collection performance. Additionally, the energy efficiency of the precipitation process becomes more important. With the switched mode power supply technology both, collection, and energy efficiency can be improved. Unfortunately, it is very difficult and unreliable to estimate the potential of improvement in advance of the equipment modernization. There are a high number of relevant process variables and uncertainties which cause the theoretical results to being unreliable. Therefore, the practical and reliable determination of the possible improvements requires a trial installation of the entire high voltage power supply equipment on site and accurate analysis of the measured data. The proposed solution suggests a mobile self contained trial unit, which can be connected easily to any existing electrostatic precipitator installations to run the tests and prove efficiencies in a real environment. View full abstract»

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  • A Novel Electronic Controller Implementation for Voltage Regulation of Single Phase Self-Excited Induction Generator

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (745 KB) |  | HTML iconHTML  

    A new scheme for voltage regulation of standalone single phase self excited induction generator (SEIG) is proposed. The thyristor switched capacitor scheme with electronic controller is designed and implemented for the reactive power supply and voltage regulation of single phase two winding SEIG reported earlier [1-2]. The recorded waveforms and test results verify the correct and proper operation of all the sections of controller design as implemented in the laboratory. The object of this scheme is to provide a standalone single phase SEIG with acceptable voltage regulation with the help of inexpensive, simple thyristor switched capacitors, suitable for low power generator with single phase out put driven by any fixed speed prime mover such as an engine energized by oil or bio-fuel. The use of SEIG reduces the capital and maintenance cost of the system, while the electronic controller along with capacitors provides acceptable voltage regulation at its output terminal. Such a system is specially suited for portable/standby generator units of 1 to 10 kW rating. Experimental results demonstrate the viability of the scheme for practical deployment. View full abstract»

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  • A Novel MATLAB Graphical User Interface Based Methodology for Analysis, Design and Capacitor Estimation of Self Excited Induction Generators

    Publication Year: 2010 , Page(s): 1 - 6
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (313 KB) |  | HTML iconHTML  

    The steady state analysis of self excited induction generator (SEIG) is vital for proper implementation of induction machine operation as a generator in a stand alone mode through appropriate modeling. This paper presents a user friendly software based solution for complete evaluation of steady-state behavior of SEIG and a design tool to estimate the capacitance requirement under different operating conditions. It can also predict the performance of SEIG with different types of prime movers such as oil / bio engines, wind and small hydro turbines. The mathematical modeling of the machine is carried out and then simulated in MATLAB's Graphical User Interface (GUI) environment and active windows are created with these models. As a basis for developing an attractive and easy to use design tool, some of MATLAB's GUI operations are implemented in creating an active link with these models. The simulation results obtained through the presented methodology are validated through relevant experimental verification. View full abstract»

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  • A Novel System-Centric Intelligent Adaptive Control Architecture for Damping Inter-Area Mode Oscillations in Power System

    Publication Year: 2010 , Page(s): 1 - 7
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (615 KB) |  | HTML iconHTML  

    In this paper, an intelligent approach based on system-centric controller to develop a power system stabilizer is proposed. The approach discuss a methodology that designs a hybrid controller with two algorithms, one a Neural Network (NN) based controller with explicit neuro-identifier, and the other, an adaptive controller evolved from a Model Reference Adaptive Controller (MRAC). This design performs as a system-centric controller. The NN is trained offline with extensive data, and is also adjusted online. Main advantage and uniqueness of the proposed scheme is the controllers' ability to complement each other in case of parametric and functional uncertainty. Moreover, the online neural network approximates the plant in the event of functional change during abnormal operating conditions. The theoretical results are validated by conducting simulation studies on a two area equivalent 5 generator, 8 bus multi-machine power system with varying generator schedules that shows low frequency oscillations. View full abstract»

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  • A Performance Study of a Multi-Level Electrode Treatment Chamber for Food Processing

    Publication Year: 2010 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (431 KB) |  | HTML iconHTML  

    Use of pulsed electric field (PEF) is considered as one of the most promising non-thermal food treatment methods. One of the challenges in applying PEF technology is the scalability issue when treating large amounts of liquid food. In this paper, the effect of using multi-level electrodes on both the pulse shape and killing efficiency of PEF technology is addressed. It has been found that the pulse width reduced and the pulse shape changed from an RC decaying pulse to RLC type as the number of treatment zones increased. Such a change in the pulse characteristics is mainly attributed to the reduction in the impedance of the treatment chamber as the number of stages increased. The effect of such change in the pulse shape on the inactivation rate of PEF treated liquid foods is examined. View full abstract»

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  • A Real-Time Sharing Reference Voltage for Hybrid Generation Power System

    Publication Year: 2010 , Page(s): 1 - 8
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (957 KB) |  | HTML iconHTML  

    The paper deals with a control strategy to manage the energy in a hybrid system. Storage elements such as batteries, supercapacitors, load, grid and renewable sources are connected through power converters and a dc-link. The dc-bus voltage control is shared with the different sources in order to respect the behavior of each element and to improve the performance of renewable energy usage. Experminental results corroborate the proposed energy management system control. View full abstract»

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  • A Series Voltage Regulator based on Quasi-Sinusoidal Waveform to Achieve Smart-Grid Requirements

    Publication Year: 2010 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (758 KB) |  | HTML iconHTML  

    Smart-Grid has emerged as an important requirement to achieve high quality voltage supplied to customers. Within the context of general power quality indicators, a common problem found in distribution systems is the unbalanced voltage. Usually, to solve this type of disturbance, a step voltage regulator can be used to obtain voltage amplitude compensation. However, for many applications, this device does not fulfill the required smart-grid needs. This can be attributed to the slow time response and the inefficacy in compensating unbalanced voltages with phase jumps. Focusing on this subject, this paper proposes a rapid response electronic voltage regulator based on a multilevel series voltage compensator topology. Using a quasi-sinusoidal waveform, the proposed device balances the supply voltages while keeping the compensated voltages within the harmonic distortion limits. View full abstract»

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  • A Substation Data System Overview

    Publication Year: 2010 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (410 KB) |  | HTML iconHTML  

    This document is an overview of integrated substation data systems that integrate the functions of relaying and metering with those of SCADA to automate much of the function of the modern electric substation. It will outline the components of the distributed system and design considerations of simple systems and complex, mission critical applications. It is of primary interest to those who plan or design substation integration and control. View full abstract»

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  • A Systematic Iron Loss Evaluating Scheme for Electromagnetic Steel Products

    Publication Year: 2010 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1181 KB) |  | HTML iconHTML  

    To provide detailed information of electromagnetic steels to potential customers, comprehensive test results that can properly indicate the iron losses of those laminated products at different operational specifications are desired from the steel manufacturers. However, with limited experimental measurements, the available datasheets can only cover some typical information that were determined from common Epstein Frame tests, and additional data regarding possible iron losses beyond the conducted measurement setups will thus be estimated by numerical approximations. Accuracies of applying these data for related machine performance evaluations at those operational conditions are always uncertain, and more convincing datasheet that can adequately characterize the electromagnetic steel properties is certainly expected. Based on Preisach model and measured information, a systematic scheme that can establish the generalized hysteresis characteristics of the electromagnetic steel will be proposed. Supported by experimental measurements and devised analytical models, confident and comprehensive iron losses of those energy conversion mechanisms constructed by laminated steels can be adequately evaluated at all feasible operational specifications. View full abstract»

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  • A Voltage Controlled PFC Cuk Converter Based PMBLDCM Drive for Air-Conditioners

    Publication Year: 2010 , Page(s): 1 - 6
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (308 KB) |  | HTML iconHTML  

    This paper deals with a Cuk DC-DC converter as a single-stage power factor correction (PFC) converter for a permanent magnet brushless DC motor (PMBLDCM) fed through a diode bridge rectifier (DBR) from a single-phase AC mains. A three-phase voltage source inverter is used as an electronic commutator to operate the PMBLDCM driving an air conditioner compressor. The speed of the compressor is controlled to achieve optimum air-conditioning using a concept of the voltage control at DC link proportional to the desired speed of the PMBLDCM. The stator currents of the PMBLDCM during step change in the reference speed are controlled within the specified limits by an addition of a rate limiter in the reference DC link voltage. The proposed PMBLDCM drive with the voltage control is designed, modeled and its performance is evaluated in Matlab-Simulink environment. The obtained results are presented to demonstrate an improved power quality (PQ) at AC mains of the PMBLDCM drive system in wide range of the speed and the input AC voltage. View full abstract»

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  • Active Compensation of Sub and Interharmonics in Cycloconverter-Fed Grinding Mill Drives

    Publication Year: 2010 , Page(s): 1 - 5
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (314 KB) |  | HTML iconHTML  

    This paper presents a filter scheme implemented with passive high-pass filters and a shunt active power filter. The filter scheme is aimed to compensate high power cycloconverter drives used in grinding mill plant. Passive filters are used to compensate power factor and characteristics current harmonic components generated by the cycloconverter, while the shunt active filter is designed to compensate only the low frequency sub and inter-harmonics generated by the cycloconverter. The principal advantage of the proposed scheme is that it allows effective attenuation of all the harmonic components resulting from cycloconverter input currents, meeting IEEE Std. 519. Simulated results of a large grinding mill plant compensated with the proposed filter scheme prove the compensation effectiveness. View full abstract»

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