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 539 for “"Inverter"”.
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Design of a Resonant Snubber Inverter for Photovoltaic Inverter Systems
… solar panels generate dc electricity, a dc to ac inverter is required to allow the energy to be used by the existing ac electrical distribution. Traditional full bridge inverters are able to accomplish this, but they suffer from many problems such as low efficiency, large size, high cost, and …
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High Power Inverter EMI Characterization and Improvement by Auxiliary Resonant Snubber Inverter
… interference (EMI) is a major concern in inverter motor drive systems. The sources of EMI have been commonly identified as high switching dv/dt and di/dt rates interacting with inverter parasitic components. The reduction of parasitic components relies on highly integrated circuit layout …
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Modulated Frequency Multiplier Inverter
… power transfer require high frequency power inverters (or rf power amplifiers) that are able to output a wide power range despite highly variable load reactances, while also maintaining high efficiency. Previous approaches to this problem, such as switched-mode inverters combined with tunable …
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9-Phase inverter driven motor
… quasi-square phase voltages. A 9-phase bridge inverter, which produces the quasi-square waveforms, and its digital controller have been constructed and tested. A theoretical analysis is included, which shows the influence of phase current harmonics upon output torque.
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Commissioning a 400 Hz rotary inverter
This dissertation covers the commissioning and testing of an aircraft's constant frequency alternator as the power supply for the Blue Parrot radar. The Blue Parrot is an X-band radar which forms part of the navigation and weapon-aiming system onboard the Buccaneer S-50 SAAF aircraft. The radar set …
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High-efficiency Transformerless PV Inverter Circuits
… have been quite a few new transformerless PV inverters topologies, which eliminate the traditional line frequency transformers to achieve lower cost and higher efficiency, and maintain lower leakage current as well. With an overview of the state-of-the-art transformerless PV inverters, a new …
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Protection and Cybersecurity of Inverter-Based Resources
… and locating faults may not be sufficient for inverter-based resources (IBR) as the fault response of an IBR differs from the response of a synchronous generator. As the composition of the power grid continues to evolve to integrate more IBRs that employ communication-based control algorithms; …
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Innovative GaN Multilevel Inverter For Motorsport Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Low-Frequency Series Loaded Resonant Inverter Characterization
… in establishing DC microgrid systems. Resonant inverter topologies exhibit zero current switching (ZCS); hence, eliminate switching losses leading to higher efficiencies in comparison to hard switched topologies.</p> <p>Resonant inverters suffer severe limitations mainly attributed to a load …
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Three-phase inverter for motor drive applications
Embargo set by: Colleen Fallaw for item 102793 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system
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3-Phase gate-turn off thyristor inverter
… Induction Motor driven by a Voltage Source Inverter (VSI) are studied. A full 3-phase Variable Speed Drive (VSD) and its controller have been designed, constructed and tested. Gate Turn-Off Thyristors (GTO's) are used as the main switching elements in the Inverter stage of the Drive. The …
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A high frequency variable load inverter architecture
… thesis presents a high frequency variable load inverter architecture along with a physical prototype and eciency optimizing controller. The inverter architecture consists of two constituent inverters, one connected directly through the load and the other connected through an immittance …
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Systematic control strategy for inverter-based microgrids
… battery storage with high-bandwidth inverter interfaces, thus facilitating efficient energy utilization from renewable sources to maintain autonomous operation without a grid connection. Therefore, control of inverter-based or inverter-dominant systems is gaining a lot of attention …
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Optimized Harmonic Stepped-Waveform for Multilevel Inverter
The concept of multilevel voltage source inverters and their modulation topologies are described. The concept of the Optimized Harmonic Stepped-Waveform (OHSW) technique for a multilevel inverter is presented. By applying this concept, specific harmonics can be eliminated, and the output voltage …
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PCB-Based Heterogeneous Integration of PFC/Inverter
… In a power factor correction (PFC) rectifier/inverter, the totem-pole configuration with critical conduction mode (CRM) operation to realize zero-voltage switching (ZVS) is deemed most desirable for a switching frequency 10 times higher than current practice. With a significantly higher …
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Protection and Cybersecurity in Inverter-Based Microgrids
… is an attractive solution for integrating inverter-based resources (IBR) in the power system. Distributed control is a potential strategy for controlling such microgrids. However, a major challenge toward the proliferation of distributed control is cybersecurity. A false data injection …
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WBG-based Current Source Inverter for Motor Drive Application [Inverter a Corrente Impressa con dispositivi WBG per azionamenti elettrici]
… tesi valuta la fattibilità dell'utilizzo degli inverter a sorgente di corrente (CSI) nelle applicazioni di azionamento dei motori. Il principio di funzionamento del CSI viene inizialmente discusso attraverso un modello analitico, insieme a un'analisi delle transizioni di commutazione e del …
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Neutral point inverter controller using H infinity techniques
… possibly large neutral current. Simulation of inverter circuit, neutral-point and H infinity (H∞ ) has been performed using MATLAB/SIMULINK software. The simulation results confirm the validity of the proposed method
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