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 “"grid-tie"”.
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A High-Efficiency Grid-Tie Battery Energy Storage System
… This dissertation proposes a high-efficiency grid-tie lithium-ion battery based energy storage system, which consists of a LiFePO4 battery based energy storage and associated battery management system (BMS), a high-efficiency bidirectional ac-dc converter and the central control unit which …
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Power electronics solutions for uninterrupted power supply and grid-tie inverters
… for Uninterrupted Power Supply (UPS), and a grid-tie microinverter. The first topic will discuss an on-line transformerless UPS system based on the integrated power electronics converters that is able to control the input power factor, charge the battery, and guarantee backup operation of the …
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Grid Tie Inverter in a Distributed Generation System with Reactive Power Capabilities
This thesis presents a single phase grid tie inverter with reactive power controller for renewable energy applications in a distributed generation system (DGS). This allows the local renewable energy sources in the DGS to provide the necessary reactive power support to the grid. The inverter …
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Series DC Arc Fault Detection for a Grid-Tie Solar PV Power Generation System
… for the detection of series dc arc faults in a grid-tie solar photovoltaic (PV) installation. The sensed dc bus current, which is sampled using an analog-to-digital converter with Galvanic isolation, is filtered using a wavelet-based, two-level filter bank. The filter bank, referred to as the …
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A Wide Range and Precise Active and Reactive Power Flow Controller for Fuel Cell Power Conditioning Systems
… aims to present a detailed analysis of the grid voltage disturbance in frequency domain for the current control design in the grid-tie inverter applications and to propose current control techniques in order to minimize its impact and maximize feasibility of the power conditioning system in …
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Design, Implementation, and Analysis for an Improved Multiple Inverter Microgrid System
… paralleled DGs, storage system and loads, a microgrid (MG) can offer a power system with increased reliability, flexibility, cost effectiveness, and energy efficient feature. Popular energy sources like photovoltaic modules (PV), wind turbines, and fuel cells require the power-electronic interface …
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Development of an automated efficiency and loss measurement system for high-efficiency power converters
… of the setup to a solar high- efficiency grid-tie inverter system is also addressed.
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Power Converter and Control Design for High-Efficiency Electrolyte-Free Microinverters
… has become a new trend for photovoltaic (PV) grid-tie systems due to its advantages which include greater energy harvest, simplified system installation, enhanced safety, and flexible expansion. Since an individual microinverter system is typically attached to the back of a PV module, it is …
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Cascade Dual-Buck Inverters for Renewable Energy and Distributed Generation
… the power electronics interface to the utility grid because of different characteristics between the sources and the grid. No matter what renewable energy source is utilized, inverters are essential in the microgrid system. Thanks to flexible modular design, transformerless connection, extended …
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Smart-grid-enabled distributed reactive power support with conservation of voltage reduction
… continues to increase in the current power grid, the reactive power support capability from photovoltaic grid-tie inverters may be used to regulate feeder voltage and reduce system losses on medium- and low-voltage distribution systems. The focus of this thesis is to develop a …
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Design of a Resonant Snubber Inverter for Photovoltaic Inverter Systems
… of reducing household dependence on the utility grid for power. But 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 …
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Power processing and active protection for photovoltaic energy extraction
… of the generation system, has limited the grid penetration of solar power. Mismatch loss remains an important issue to address in PV systems, and a solar power system can lose as much as 30% of its energy generation capability over a year due to mismatch. Maximum power point tracking (MPPT) …