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 9 of 9 for “"DC-AC power conversion"”.
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High-Frequency Quasi-Single-Stage (QSS) Isolated AC-DC and DC-AC Power Conversion
The generic concept of quasi-single-stage (QSS) power conversion topology for ac-dc rectification and dc-ac inversion is proposed. The topology is reached by direct cascading and synchronized switching of two variety of buck or two variety of boost switching networks. The family of QSS power …
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Improved renewable energy power system using a generalized control structure for two-stage power converters
… a generalized control structure for two-stage power converters operated in a renewable energy power system for smart grid and micro grid systems. The generalized control structure is based on the two-loop average-mode-control technique, and created by reconstructing the conventional control …
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Design and Optimization of a High Power Density Silicon Carbide Traction Inverter
… a 3-phase silicon carbide based 150-kW 25 kW/L DC-AC power conversion unit capable of operation with coolant temperatures up to 90°C. The project goals were met and exceeded by first analyzing the established inverter topologies to find which one would yield the highest power density while still …
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Design and implementation of a single phase modified Z-source inverter topology for photovoltaic/grid interconnected DC charging applications
… mall. The Z-source inverter (ZSI) topology achieves voltage boost and DC-AC power conversion in a single stage. In this thesis, the design and implementation of a modified ZSI (MZSI) based charging topology for PV/EV/Grid interconnected application has been presented. The operation of the …
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Improvement in control and gain aspects of impedance source inverters and converters
Power electronics have revolutionized the concept of power control for power conversion and for control of electrical motor drives. Power electronics has been extensively used in industrial applications since it was first discovered in 1902. Power conversion is one of the most important and …
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Comparison and Design of High Efficiency Microinverters for Photovoltaic Applications
… due to recent developments in PV panel manufacturing that decreases material costs and improves energy harvesting efficiency. Since PV sources are DC sources power conversion stages have to be used in order to interface this power to the existing electrical utility system. The structure of …
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Topologies and control estrategies of multiport modular multinivel converters
… y el aumento progresivo de su coste. Esta situación ha impulsado la entrada de las energías renovables en el sistema eléctrico actual. Sin embargo, una integración a gran escala de energías renovables en el sistema eléctrico actual supone un gran desafío, puesto que gran parte de la capacidad …
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A Novel DC-DC Converter for Photovoltaic Applications
… a clean energy future. In this thesis, a novel DC-DC converter known as the Coupled Inductors Combined Cuk-SEPIC' (CI-CCS) converter is explored, which is particularly attractive for these photovoltaic applications. A topological modification is investigated which provides several benefits, …
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Inversores Fonte Z monofásicos e conversor de dois estágios para sistemas fotovoltaicos sem Transformador
… fotovoltaicos em série, topologias com característica de elevação de tensão (boost) podem ser utilizadas. Portanto, topologias que possuem estas características e que possam apresentar baixos valores de correntes de fuga devem ser escolhidas para o estudo. As topologias presentes neste …