Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 37 for “"electrical network"”.
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An Extension of Electrical Network Differential Equations and Theorems
Made available in DSpace on 2014-12-04T21:02:40Z (GMT). No. of bitstreams: 1 0009135.pdf: 2675237 bytes, checksum: 7390685c867af938e6d597ae918ab032 (MD5) Previous issue date: 1954
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Transmission Capacity Effects on Market Inefficiencies in the California Electrical Network
… meet aggregate market demand in the absence of network constraints. The California market data shows that transmission congestion segments market. Finite transmission capacity may not allow inframarginal plants to produce their full capacities and the competitive benchmark prices in the presence …
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A reliability method for the analysis of turboelectric distributed propulsion electrical network architectures
… places a significant additional reliance on the electrical system, requiring architectures that meet specified thrust requirements at a minimum associated weight as well as providing the greatest performance against the proposed emissions targets. This thesis presents a method for evaluating the …
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A linear group and state variable formulation of the electrical network analysis problem
This paper reports on the development of a network analysis technique employing both a linear graph theory formulation of the topological relations and a state variable analysis of these relations. As a consequence of these investigations, a network analysis program, GENA, was developed. Special …
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A Computer-Based Education Approach to Electrical Network Theory: Lesson Development, Use and Evaluation
Made available in DSpace on 2014-12-10T19:06:51Z (GMT). No. of bitstreams: 1 7212184.pdf: 2580873 bytes, checksum: a2bb7681a2c8f0f3997600aa162df510 (MD5) Previous issue date: 1971
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An electrical network model for computing current distribution in a spirally wound lithium ion cell
… of a spirally wound lithium ion battery with an electrical network that can model the heat losses due to electric resistances of the current collectors. The developed electrical network model is used to calculate the current and state-of-charge distribution throughout the spiral jelly roll, which …
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IMPACT OF HVDC INVERTER STATION FAULTS ON TURBINE-GENERATOR SHAFT TORSIONAL TORQUES
… between turbine-generator shaft systems and the electrical network disturbances has been extensively investigated during the last two decades. Those investigations have shown that some of these disturbances can inflict severe torsional stressing on the shafts of the turbine-generators. The …
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On Size and Control: The Use of Dimensional Analysis in Controller Design
… have been studied under the framework of electrical network analysis since the 1960's; this thesis provides perhaps the first generalized solution. Extensions of the sensitivity result to problems of gain-scheduling, model reduction, adaptive control and identification, and nonlinear …
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The NILM Dashboard : watchstanding and real-time fault detection using Non-intrusive Load Monitoring
… (NILM) measures power at a central point in an electrical network and disaggregates individual load schedules from the overall power stream. This thesis presents the NILM Dashboard, a data-analysis and user interface tool that provides real-time machinery monitoring and fault diagnostics using …
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Framework of non-intrusive load monitoring for shipboard environments
… (NILM) measures power at a central point in an electrical network in order to provide real-time energy management and equipment diagnostics. Results are presented from NILM systems installed aboard two US Coast Guard ships. The collected data is used for fault diagnostics and condition-based …
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A modular real-time hardware-in-the-loop simulation environment for microgrids
… solves for the complex bus voltages in a 4-bus electrical network (with 1 bus as the swing/reference bus) was designed and implemented. Simple Distributed Generator (DG) models were written in C++, with a 3-phase inverter always as the last sub-system of each DG model. The inverter was …
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Avaliação da estabilidade de tensão em sistemas com elos de corrente contínua em redes eletricamente próximas
… inverter stations are connected to the same electrical network. This system configuration is known as multi-infeed. To undertake such an evaluation, static modal analysis methodology based on eigenvalue decomposition was applied. This method affirms the proximity of voltage instability and …
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Resistive Companion Dynamic Phasor Networks and Phasor to Time Domain Network Coupling
… <p>Also, a method for coupling phasor RCF networks to time domain RCF networks is proposed. The coupling method uses controlled sources, modified nodal analysis (MNA), and a discrete Fourier transform (DFT) phasor estimation. A coupling device using this technique is implemented in Virtual …
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Grid integration of wave energy & generic modelling of ocean devices for power system studies
… of a wave farm on the power quality of its local network is investigated. Two estimation methods were developed regarding the flicker level Pst generated by a wave farm in relation to its rated power as well as in relation to the impedance angle ψk of the node in the grid to which it is connected. …
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Modeling, identification, and application of multilayer polypyrrole conducting polymer actuators
… low-order lumped parameter models of actuator electrical, mechanical, and electromechanical behavior. Experimental data were processed using system identification techniques. Both grey box and black box models were identified. The grey box model consisted of a first order electrical network …
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Step by step eigenvalue analysis with EMTP discrete time solutions
… a discrete time state space representation of an electrical network using the nodal [G] matrix of the Electromagnetic Transients Program (EMTP) solution. This is the first time the connection between the EMTP nodal analysis solution and a corresponding state-space formulation is presented. …
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Conservation in signal processing systems
… existing engineering systems and algorithms. In electrical network theory for example, many of the useful theorems regarding the stability, robustness, and variational properties of circuits can be derived in terms of Tellegen's theorem, which states that a wide range of quantities, including …
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An improved firefly algorithm for optimal microgrid operation with renewable energy
Lately, an electrical network in microgrid system becomes very important to rural or remote areas without connection from primary power grid system. Higher cost of fuels, logistic, spare parts and maintenance affect the cost for operation microgrid generation to supply electrical power for remote …
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Competition and loss of efficiency : from electricity markets to pollution control
… how the number of competing generators and the electrical network constraints affect the performance of deregulation.
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Modular modeling and control of a hybrid unmanned aerial vehicle’s powertrain
… performing, more reliable, and more efficient electrical components. However, the introduction of a complex electrical network onboard mobile systems poses significant challenges for control design engineers. The most notable challenge is the coordination of multi-domain and multi-timescale …
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