Search results

Title: Determination of ratio and angle errors in a series transformer
Creator: Curtis, H. S., Guthrie, J. F.
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/determinationofr00curt
Thesis (B.S.)--Armour Institute of Technology

Title: Determination of the temperature coefficient and coefficient of resistivity of copper, iron and aluminum
Creator: Sanders, W. J., Wheeler, H. M.
Date: 2009, 1907
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/determinationoft00sand
Thesis (B.S.)--Armour Institute of Technology

Title: COORDINATION OF STORAGE WITH RENEWABLE ENERGY RESOURCES IN POWER SYSTEMS
Creator: Khodayar, Mohammad Esmaeil
Date: 2012-07-16, 2012-07
Description: The ever-increasing penetration of variable wind energy in power systems affects the hourly dispatch of thermal power generation in...
Show moreThe ever-increasing penetration of variable wind energy in power systems affects the hourly dispatch of thermal power generation in electricity markets. The coordination of wind power generation units with pumped-storage hydro (PS) generation could relieve the variability of wind energy and increase its hourly dispatchability. In this dissertation, a coordination methodology for wind and pumped-storage hydro (PS) units in the dayahead operation planning of power systems is proposed. With coordination, the PS unit can offset intrahour wind energy imbalances (i.e., deviations from hourly schedules) and minimize wind energy curtailments. The wind-PS coordination based on the application of stochastic security-constrained unit commitment (Stochastic SCUC) is evaluated in which, the hourly bus- level coordinated scheduling of wind energy and PS is compared with the system-level coordinated operation strategies in the day-ahead scheduling of power systems. Volatility of wind generation can also reduce the profit in day-ahead market by imposing potential imbalance charges in a generating company (GENCO). The dayahead price-based scheduling strategy for the coordination of wind and storage units in a GENCO is proposed based on the stochastic price-based unit commitment (PBUC) which considers volatilities in day-ahead intra-hour market prices and wind power generation when scheduling wind and storage units. The increased utilization of Plugin Electric Vehicles (PEVs), which consume electricity rather than fossil fuel for driving, offers unique economic and environmental opportunities, and brings out new challenges to electric power system operation and planning. The proposed approach evaluates the effect of integrating a large number of electric vehicles (EVs) on power grid operation and control. The coordinated integration of aggregated PEV fleets and renewable energy sources (wind energy) in power systems is studied by stochastic security-constrained unit commitment (Stochastic SCUC) model, which minimizes the expected grid operation cost while considering the random behavior of the many PEVs. Finally, the role of high reliability distribution system (HRDS) in microgrid operations is evaluated. HRDS, which offers a higher operation reliability and fewer outages in microgrids, is applied to looped networks in distribution systems. The storage system would enhance the microgrid reliability while offering hourly ancillary services and demand response for reducing operation costs. The HRDS implemented at Illinois Institute of Technology (IIT) is used as a case study along with the local DER to increase the load point reliability and decrease the operation cost of the microgrid.
Ph.D. in Electrical Engineering, July 2012
Show less

Title: IMPLICITLY-COUPLED ELECTROMECHANICAL AND ELECTROMAGNETIC TRANSIENT ANALYSIS
Creator: Zhang, Xu
Date: 2015, 2015-05
Description: The operation of an electrical power system involves continuous electromechanical and electromagnetic interaction of energy among the system...
Show moreThe operation of an electrical power system involves continuous electromechanical and electromagnetic interaction of energy among the system components. Under normal operation, the system behavior could be represented by voltage and current phasors in the frequency domain. However, the system may not work on the fundamental frequency following some fast transients (loss of generator, switching event, system disturbance and etc.), at this time we need specific tools to investigate the dynamic scenario. Transient stability (TS) simulator, also referred to as electromechanical transient simulator, running at time steps on the order of milliseconds and only capable of capturing the fundamental frequency transient, is used for the analysis of largescale networks. On the other hand the electromagnetic transient (EMT) simulator running at time steps on the order of microseconds, with detailed equipment modeling is capable of analyzing transients over a wider frequency spectrum; however, it is computationally onerous, so it is typically restricted to the analysis of small networks. An electromechanical-electromagnetic transient simulator is the combination of a TS simulator and an EMT simulator, inheriting the merits of both programs. The basic idea of an electromechanical-electromagnetic simulator is to decompose the power system into two broad categories: a large connected TS network (main network) and smaller EMT network (detailed subsystem). The main network is running on TS simulator while the detailed subsystem is running on the EMT simulator. The implicitly-coupled electromechanical and electromagnetic simulator has TS and EMT simulators coupled at the equation solution level, which could ensure the consistence of the solution between TS and EMT simulation. Instead of using fundamental frequency equivalent model of the main network in EMT simulation of implicitly-coupled electromechanical and electromagnetic simulator, a frequency dependent network equivalent (FDNE) model is utilized to preserve the non-fundamental frequency fast transient response of the main network. Along with the implementation of FDNE model, this research work also propose a new TS simulator that is capable of running three-phase transient stability simulation under fundamental and non-fundamental frequency simultaneously. Furthermore the performance of implicitly-coupled electromechanical-electromagnetic transient simulator could be improved with the implementation of this new TS simulator.
Ph.D. in Electrical and Computer Engineering, May 2015
Show less

Title: DIGITAL SIGNAL PROCESSING IM PLEMENTATION FOR CONT INUOUS WAVE RADAR SYSTEMS
Creator: Moninuola, Olufola
Date: 2013-04-30, 2013-05
Description: Real-time imaging radar design for human feature extraction is an emerging field that requires radar architectures with short dwell time, high...
Show moreReal-time imaging radar design for human feature extraction is an emerging field that requires radar architectures with short dwell time, high resolution and low hardware complexity. The Successive Multi Frequency Continuous Wave (S-MFCW) technique has been proposed as a suitable architecture to achieve a comparable resolution with the Frequency Modulated Continuous Wave (FMCW) technique without sacrificing short dwell time and low hardware complexity. The hardware complexity and power consumption of these two techniques were investigated in this work. Two processor designs based on Read Only Memory (ROM) lookup tables and Coordinate Rotation Digital Computer (CORDIC) algorithm were implemented for the SMFCW technique on Xilinx’s Virtex-6 Field Programmable Gate Array (FPGA) and compared with the Fast Fourier Transform (FFT) implementation of the FMCW technique. Hardware complexity comparisons were based on the amount of FPGA resources utilized in each design while power consumption results were generated after place and route. The CORDIC-based implementation of the S-MFCW technique was found to reduce the hardware complexity of the FMCW technique by a factor of three while the ROM implementation was found to consume the least power.
M.S. in Electrical Engineering, May 2013
Show less

Title: FPGA IMPLEMENTATION OF QR DECOMPOSITION ALGORITHMS USING HIGH-LEVEL SYNTHESIS ON ZYNQ SOC
Creator: Desai, Parth
Date: 2017, 2017-05
Description: Matrix decomposition and computation constitute an important part of various signal processing, image processing, and communication systems. A...
Show moreMatrix decomposition and computation constitute an important part of various signal processing, image processing, and communication systems. A better solution in terms of power, performance, and area, can lead to improved performance of the whole system. Designing and testing a new idea is a big challenge due to time limitations. So, a better implementation flow using High-Level Synthesis is discussed. This flow is used to implement QR decomposition algorithms. Three different QR factorization techniques, Gram-Schmidt, Givens Rotation, and Householder Transformation is discussed. These algorithms are compared in terms of area, performance, and precision. All the algorithms are implemented with two different variations in terms of the data type used. A 32-bit floating-point implementation and 16-bit fixed-point implementation are discussed. Results for different designs with various optimization techniques like loop unrolling and pipelining are presented. A scalable architecture is implemented for all the algorithms which are compared for a 10 × 10 matrix architecture. Results for scaled up 100 × 100 matrix architecture are also discussed for the Gram- Schmidt algorithm. Gram-Schmidt had the best performance in all. The performance of Gram Schmidt algorithm was improved by a factor of 3 for 10 × 10 matrix size and by a factor of up to 10 for 100 × 100 matrix size using different optimizations. Givens rotation was close in terms of performance, but the Householder Transformation was four times slower compared to other two algorithms, the reason being the high complexity of the algorithm. All floating-point implementations had nearly 100% precision but varied from 3% to 5% in average error for fixed-point data-type for a 10 × 10 implementation. All the algorithms were coded in C++ and synthesized using High-Level Synthesis using Xilinx Vivado HLS 2016.4 tool. This generated an IP core which was imported to Xilinx Vivado 2016.4 for implementation. The design was targeted for Zedboard, a Zynq – 7020 Extensible Processing Platform (EPP) Development Kit, which has a 7 series Xilinx FPGA architecture and a dual core ARM Cortex A-9 processor.
M.S. in Computer Engineering, May 2017
Show less

Title: Decimal Multiplication Architecture for FPGA Implementation
Creator: Krishna Kumar, Ashwitha
Date: 2012-07-23, 2012-07
Description: The hardware support for the Decimal Multiplication is gaining importance in commercial applications including banking, accounting, tax...
Show moreThe hardware support for the Decimal Multiplication is gaining importance in commercial applications including banking, accounting, tax calculations, currency conversion and insurance. In this work, we examine the di erent types of number sys- tems that have been used for executing Decimal Multiplication. A unique signed-digit representation is used for reduced logic and latency. Furthermore, partial product ac- cumulation is performed with Svoboda decimal adder, which is e cient. The imple- mentation of the proposed architecture is modeled using VHDL and then synthesized on FPGA. The hardware resources for this architecture are analyzed. This work presents an important case study for FPGA implementation of Decimal Arithmetic architectures such as ALUs.
M.S. in Electrical Engineering, July 2012
Show less

Title: DESIGN CHALLENGES AND CONSIDERATIONS FOR WIRELESS ELECTRIC VEHICLE CHARGING
Creator: Bloom, Matthew Aaron
Date: 2012-06-05, 2012-07
Description: As plug-in hybrid vehicles (PHEVs) become more popular and common place, there has been a considerable demand for hassle-free charging, in the...
Show moreAs plug-in hybrid vehicles (PHEVs) become more popular and common place, there has been a considerable demand for hassle-free charging, in the form of wireless technologies. The goal of this research was to investigate the design challenges associated with the design of a high-efficiency, wireless, Level-2 PHEV charger. This work analyzes the challenges presented by the magnetic coupling factor, AC resistance and Q-factor, coil radius, and power electronics, as well as their impact on the overall efficiency and output power level. In this work, the design specifications were centered on the Chevy Volt, and the wireless technology used for power transfer was the WiTricity™ system. In order to regulate the load current/voltage, a “current chopper” circuit is presented, which acts as similarly to a modified boost converter. To validate the ideas presented in this thesis, a 3.3 kW charging system was designed and simulated. To accurately model the WiTricity™ system in simulation, an electromagnetic/circuit-level co-simulation was performed using MATLAB Simulink and Infolytica MagNet. Waveforms from simulation are presented and analyzed in this work. The current chopper circuit was found to accomplish both voltage regulation for resistive loads, as well as constant-current and constant-voltage mode charging for Li-ion battery applications. Because of the switching nature of the current chopper, direct efficiency calculations were not possible; however, at full load, the wall-to-load efficiency was calculated to be 80%.
M.S. in Electrical Engineering, July 2012
Show less

Title: The adaptation of the multi-tapped auto transformer to dimming of incandescent lamps
Creator: Simpson, Tracy W.
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/adaptationofmult00simp

Title: The action of a three phase induction motor under various forms of pressure wave
Creator: Brackett, John, Redman, A. R.
Date: 2009, 1905
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/actionofthreepha00brac
Thesis (B.S.)--Armour Institute of Technology

Title: SUPERVISED AND INTERACTIVE IMAGE SEGMENTATION TECHNIQUES WITH AN APPLICATION TO PROSTATE CANCER
Creator: Artan, Yusuf Oguzhan
Date: 2013, 2013-05
Description: Prostate cancer is a leading cause of cancer death for men in the United States. Fortunately, the survival rate for early diagnosed patients...
Show moreProstate cancer is a leading cause of cancer death for men in the United States. Fortunately, the survival rate for early diagnosed patients is relatively high. Accurate prostate cancer localization with noninvasive imaging using MRI can be used to guide biopsy, radiotherapy, and surgery as well as to monitor disease progression. However, in general, a single type of MRI is not sufficient for reliable tumor localization. As an alternative, multispectral MRI, i.e., the use of multiple MRI-derived datasets, has emerged as a promising noninvasive imaging technique for the localization of prostate cancer; however almost all studies are with human readers. There is a significant inter and intra-observer variability for human readers, and it is substantially difficult for humans to analyze the large dataset of multispectral MRI. To solve these problems, this thesis presents various novel supervised and semi- supervised (interactive) segmentation techniques. Initially, we develop a supervised segmentation method by combining conditional random fields (CRF) and support vector machines (SVM) with a cost-sensitive framework, and show that proposed method further improves classical and cost-sensitive SVM results by incorporating spatial information. Next, we propose an extension of popular semi-supervised seg- mentation method, namely random walker (RW) algorithm, with automated seed initialization for multispectral MRI images. We also present an automated shape and boundary based segmentation approach for prostate segmentation from T2-weighted MRI. Proposed method is based on a banded geocuts algorithm that utilizes bound- ary and shape information to yield prostate segmentation. Finally, we develop a novel method that has the ability to design classifiers obtained from one imaging protocol and/or MRI device to be used on a dataset from another protocol and/or imaging device. In order to evaluate the performance of the proposed methods, we utilize multispectral MRI datasets acquired from 21 biopsy-confirmed cancer patients. Our results show that multispectral MRI helps to increase the accuracy of prostate cancer xiv localization when compared to single MR images; and that using advanced proposed methods for prostate cancer localization performs better than available methods in the literature.
PH.D in Electrical Engineering, May 2013
Show less

Title: A NEAR-THRESHOLD FLIP FLOP AND A SUB-THRESHOLD SRAM FOR LOW-POWER APPLICATIONS
Creator: Ramani, Arun Ramnath
Date: 2011-07, 2011-07
Description: This dissertation has two new circuit level designs proposed. One a Dual edge triggered Near threshold State Retentive flip flop and another a...
Show moreThis dissertation has two new circuit level designs proposed. One a Dual edge triggered Near threshold State Retentive flip flop and another a 9TSRAM cell for operation in Sub-Threshold Region. Since power consumption has become one of the major issues in the Ultra Deep Sub-Micron Technology, we have seen ideas where power saving methods being evolving and these given priority. Scaling the supply voltage into the near-threshold and the sub-thresholdregion for low power operation is possible. Power reduction in memory circuits with a little compromise on performance is very useful as these memory elements are the ones that form a major part of a integrated chip. The first part of this dissertation proposes a new dual edge triggered near threshold state-retentive pulsed latch or flip flop for low-power applications. The proposed circuit uses the idea of power gating during the sleep or idle mode thereby avoiding leakage but still retaining its state. It uses a dual edge triggered pulse which triggers the circuit at both the rising and falling edges of the clock. The circuit used low Vth Devices only and hence can operate at a Vdd as low as 0.5 V. The circuit was simulated using HSPICE at 45nm technology. In the second part of this dissertation, operation of various SRAM designs in sub-threshold region is examined and the ones which overcome the challenges that arise from operating in the sub-threshold region are also explained. Among the chosen designs for performance evaluation, the successful designs were the ones which resulted in proper read and write at sub-threshold supply voltage. Best combinations of them were taken and along with the considerations with respect to read noise margin, were made into a new SRAM design operating in subthreshold region. The circuit was simulated using HSPICE at 45nm technology using Predictive Technology Models.
M.S. in Electrical Engineering, July 2011
Show less

Title: MICROGRIDS AND DISTRIBUTED GENERATION SYSTEMS: CONTROL, OPERATION,COORDINATION AND PLANNING
Creator: Che, Liang
Date: 2015, 2015-07
Description: Distributed Energy Resources (DERs) which include distributed generations (DGs), distributed energy storage systems, and adjustable loads are...
Show moreDistributed Energy Resources (DERs) which include distributed generations (DGs), distributed energy storage systems, and adjustable loads are key components in microgrid operations. A microgrid is a small electric power system integrated with onsite DERs to serve all or some portion of the local loads and connected to the utility grid through the point of common coupling (PCC). Microgrids can operate in both gridconnected mode and island mode. The structure and components of hierarchical control for a microgrid at Illinois Institute of Technology (IIT) are discussed and analyzed. Case studies would address the reliable and economic operation of IIT microgrid. The simulation results of IIT microgrid operation demonstrate that the hierarchical control and the coordination strategy of distributed energy resources (DERs) is an effective way of optimizing the economic operation and the reliability of microgrids. The benefits and challenges of DC microgrids are addressed with a DC model for the IIT microgrid. We presented the hierarchical control strategy including the primary, secondary, and tertiary controls for economic operation and the resilience of a DC microgrid. The simulation results verify that the proposed coordinated strategy is an effective way of ensuring the resilient response of DC microgrids to emergencies and optimizing their economic operation at steady state. The concept and prototype of a community (networked) microgrid that interconnecting multiple microgrids in a community are proposed. Two works are conducted. For the coordination, novel three-level hierarchical coordination strategy to coordinate the optimal power exchanges among neighboring microgrids is proposed. For the planning, a multi-microgrid interconnection planning framework using probabilistic minimal cut-set (MCS) based iterative methodology is proposed for enhancing the economic, resilience, and reliability signals in multi-microgrid operations. The implementation of high-reliability microgrids requires proper protection schemes that effectively function in both grid-connected and island modes. This chapter presents a communication-assisted four-level hierarchical protection strategy for highreliability microgrids, and tests the proposed protection strategy based on a loop structured microgrid. The simulation results demonstrate the proposed strategy to be an effective and efficient option for microgrid protection. Additionally, microgrid topology ought to be optimally planned. To address the microgrid topology planning, a graph-partitioning and integer-programming integrated methodology is proposed. This work is not included in the dissertation. Interested readers can refer to our related publication.
Ph.D. in Electrical and Computer Engineering, July 2015
Show less

Title: Characteristic performance of an induction generator
Creator: Johnson, A. R, Laurence, V. E, Adams, E. W
Date: 2009, 1908
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/characteristicpe00john
Thesis (B.S.)--Armour Institute of Technology, 1908 B.S. in Electrical Engineering, 1908

Title: The design and construction of a radio telephone station
Creator: Pearce, W.w., Rosendal, D. L.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designconstructi00pear
Thesis (B.S.)--Armour Institute of Technology

Title: Design and construction of a Boucherot Induction Motor
Creator: Gray, R. L.
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designconstructi00gray
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Electrical Engineering, 1911

Title: Design of a 30,000 kW steam-electric generating station for Detroit, Michigan
Creator: Bloomfield, J. C, Konicek, F., Jr., Witte, O. A
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designof30000kws00bloo
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Electrical Engineering, 1911

Title: Design of a 20,000 K.V.A. transformer
Creator: Liu, Abraham S
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designof20000kva00liua
Thesis (B.S.)--Armour Institute of Technology;Bibliography: leaf 46 B.S. in Electrical...
Show morehttp://www.archive.org/details/designof20000kva00liua
Thesis (B.S.)--Armour Institute of Technology;Bibliography: leaf 46 B.S. in Electrical Engineering, 1920
Show less

Title: Design of a 20,000 KVA generating station
Creator: Kihlstrom, Harry C., O'rourke, James J.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designof20000kva00kihl
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket

Title: Determination of distribution curves of arc lamps and indirect lighting units
Creator: Arenberg, Albert Lee, Fischel, Rudolph E
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/determinationofd00aren
Thesis (B.S.)--Armour Institute of Technology; Includes index

repository.iit

Search the repository

Pages

Pages

Enabled Filters

Refine Results

Type

Date

Subject

Creator

Rights