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 12 of 12 for “"three-phase inverters"”.
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Comparison Between PWM and SVPWM Three-Phase Inverters in Industrial Applications
<p>Two different three-phase inverters are introduced and compared showing the differences and similarities between them in terms of output power, implementation, challenges and efficiency. Both inverters use the same feedback controller and both have the same input voltage and the same load …
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Observer based fault detection filters for three-phase inverters and statcoms
… fault detection and isolation filters for three-phase AC-DC power electronics systems that is able to detect all possible component faults, offers fast detection, and has the ability to capture slow degradation in individual components. The structure of these filters is similar to that of a …
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Fault detection design for three-phase voltage source inverter in power train applications
… detection methods tailored specifically for three-phase inverters, critical components within the propulsion systems of Electric Vehicles (EVs) and drive systems in general. A notable focal point of this study involves the application of advanced signal processing techniques to adeptly …
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Fractional Order Identification Method and Control: Development of Control for Non-Minimum Phase Fractional Order System
… to voltage levels suitable for connecting three phase inverters to distribution level networks. As grid-connected solar power levels continue to increase, there is a corresponding need for improved modeling and control of power electronic converters. In particular, higher levels of boost …
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A hierarchy of microgrid models with some applications
… cost as well. Our approach involves three key stages: (1) the formulation of high-order models, using existing circuit and control laws in the literature, followed by (2) a systematic reduction of the high-order models to reduced-order models using singular perturbation analysis and, …
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Dynamic Aggregation of Grid-tied Inverters
Power-electronics inverters are being integrated in large numbers in distribution networks with rapid deployment of renewable resources, energy storage, and flexible loads. Since such distributed energy resources will serve a majority of loads in the next- generation power network, it is critical …
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Current source dc-dc and dc-ac converters with continuous energy flow
… classifies and presents several new single-phase and three-phase differential-mode current source inverters that evolve from the basic dc-dc converter topologies. The switched, large-signal, and small-signal models of these converters are presented, and used to develop control strategies for …
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Frequency Domain Conductive Electromagnetic Interference Modeling and Prediction with Parasitics Extraction for Inverters
… extended to the prediction of DM and CM EMIs of three-phase inverters under complex pulse width modulation (PWM) patterns. The inverter noise source requires the double Fourier integral technique because its switching cycle and the fundamental cycle are in two different time scales. The noise …
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Circuits and Modulation Schemes to Achieve High Power-Density in SiC Grid-connected Converters
… beyond this limit. In this dissertation, three key factors are selected to increase the power density of SiC-based grid-connected three-phase converters. Throughout this dissertation, the techniques and strategies to increase the power density of SiC three-phase converters were …
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Regeling van driefasige invertorgekoppelde decentrale generatoren met betrekking tot de verbetering van de netkwaliteit
Het elektrische energielandschap heeft het laatste decennium sterke veranderingen ondergaan. Zo zijn er de laatste jaren een groot aantal decentrale generatoren (dg) op het net aangesloten. De aansluiting van dit grote aantal voornamelijk éénfasige dg-eenheden geeft aanleiding tot …
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A novel concept of series connected multi-phase, multi-motor drive systems
… The first one consists of a number of three-phase voltage source inverters (VSI) connected in parallel to a common DC link, each inverter feeding a three-phase AC motor. This configuration allows independent control of all machines by means of their own three-phase VSIs. The second …
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Bit-Stream Control of Doubly Fed Induction Generators
… include: coordinate transformation units, a Phase Locked Loop (PLL) and a family of modulators which convert Bit-Stream reference signals to gate drive commands for three-phase inverters. A Bit-Stream control system for a 2 kW GSC is developed, simulated and tested experimentally. Elements of …