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 52 for “"induction machine"”.
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Induction Machine Performance Improvements: Design-Oriented Approaches
Finally, an induction machine model featuring a variable permeance element mesh is introduced. Results for a 500 W motor are compared to measurements, analytical models, and FEA. This machine has limited nominal torque capabilities due to saturated stator and rotor teeth, discovered neither by the …
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Estimation of rotor flux of an induction machine
… 1 describes background information of the machines then it focuses on the methodology how on to approach the task on a particular time with the help of Gantt chart.Chapter 2 presents the basic principals of rotating magnetic field of the IM and asserts brief overview of the AC machines. …
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Induction machine stray loss from inter-bar currents
… load loss refers generally to the sources of induction machine loss not accounted for by typical calculations of primary or secondary copper loss, no load core loss, or friction and windage loss. Harmonic rotor bar currents from the non-sinusoidal distribution of the slotted stator winding …
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Accelerating induction machine finite-element simulation with parallel processing
… electromagnetic analysis and design of electric machines is computationally intensive. A means of accelerating two-dimensional transient finite element analysis, required for induction machine modeling, is explored using graphical processing units (GPUs) for parallel processing. The graphical …
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High performance induction machine control: Methods, limits and solutions
This thesis discusses various high performance induction machine control methods and provides methods for improved performance. Parameter sensitivity analyses on the discussed control methods are given. Practitioners have reported performance degradation during high speed DTC operation, including …
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Continuously-variable-pole induction machine drive for electric vehicles
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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A Novel Reconfigurable Induction Machine Drive for Hybrid Vehicles
… for regenerative braking. Two electric machine drives are normally required to meet the above requirements, resulting in a complex system and higher cost. In this thesis, a novel induction machine drive, reconfigurable induction machine drive (RIMD) is proposed to achieve a modified …
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Fault tolerant behavior of advanced control schemes of induction machine drives
… advanced control schemes of variable-speed induction machine drive applications. The two advanced control schemes, Indirect Field oriented control (IFOC) and Direct torque control (DTC), are compared by examining their implementation complexity, parameter sensitivity, dynamic responses, …
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A composite material approach towards induction machine design using planar layer models
The three-phase squirrel cage induction machine has seen evolutionary, not revolutionary, advancements since its conception over 100 years ago. At its most basic level, the design has remained very close to its roots. This thesis emphasizes electric machine synthesis through the development of …
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Variable-pole induction machine and multi-leg inverter system for electric vehicles
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Dynamic-systems analysis of self-excitation associated with a capacitor-coupled substation (CCS) - induction machine system
The purpose of this thesis is therefore to establish the cause of SSR at the Meru-Petronet system, and other similar systems, and investigate various compensation techniques.
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Investigation of Control Concepts for High-Speed Induction Machine Drives and Grid Side Pulse-Width Modulation Voltage Source Converters
… a low voltage ac/dc/ac converter for high-speed induction machine drive applications has been investigated. Such a configuration can be applied, for example, in microturbines and high-speed spindles. Scalar control is usually applied for the control of high-speed drives especially in the case of …
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Estratégia de minimização de perdas para um gerador de indução duplamente alimentado
… losses due to copper and iron of a doubly fed induction machine. This strategy consists in finding the optimum reactive power sharing between the rotor and stator circuits of the generator. As this work is motivated to reduce costs and improve system efficiency, this research is focused on …
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Dynamic load modeling in power system analysis
… this thesis is to examine the effect of dynamic induction machine modeling and polynomial static load modeling on the stability of electric power systems and to compare the results with those obtained using constant impedance or constant current load models. A least-squares curve fit algorithm is …
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Development of a Power Hardware-in-the-Loop Test Bench for Electric Machine and Drive Emulation
… loop (PHIL) platform to emulate electric machines for the purpose of a motor drive testbench with a particular focus on induction machine emulation. PHIL presents advantages over full-hardware testing of motor drives as the PHIL platform can save space and cost that comes from the physical …
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Speed sensorless field oriented control of ac induction motor using model reference adaptive system
… vector control is greatly used and applied in induction machine drives instead of scalar control and vector control for their robustness and reliability, and very low maintenance cost. In this project MRAS based techniques are used to estimate the rotor speed based on rotor flux estimation, the …
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Voltage collapse prediction for interconnected power systems
… of the constant load model. The effect of induction machine load is considered in this study. The load is connected to several selected buses.;The analysis is performed for three well-known system; Western System Coordinating Council (WSCC) 3-Machines 9-Bus system, IEEE 14 Bus system and …
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A Framework for the Analysis and Design of Vector Controllers for Induction Machines
The development of controllers for induction machines has been incremental rather than revolutionary. The traditional current-flux model is partially responsible for this, because the control objectives (torque and flux magnitude) are implicit to the model. This work makes contributions to the …
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Design of a novel rotary compact power pack for the series hybrid electric vehicle. Design and simulation of a compact power pack consisting of a novel rotary engine and outer rotor induction machine for the series hybrid electric vehicle powertrain.
… followed by an explanation of the principles of induction machines. A new type of rotary induction machine with an outer rotor construction is designed to be coupled with the novel rotary internal combustion engine with rotating crankcase in order to form the compact power unit for the hybrid …
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