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 75 for “"harvesting system"”.
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Pico-grid: Multiple Multitype Energy Harvesting System
… focuses on the development of a low power energy harvesting system specifically targeted for wireless sensor nodes (WSN) and wireless body area network (WBAN) applications. The idea for the system is derived from the operation of a micro-grid and therefore is termed as a pico-grid and it is …
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Dynamic analysis of an electrostatic energy harvesting system
… have typically low efficiency of energy harvesting from low frequency vibrations. Several recent studies have indicated that introduction of nonlinearity can significantly improve the efficiency of such systems. Motivated by these observations we have studied the nonlinear electrostatic …
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Ocean Current Energy Harvesting System for Arctic Monitoring
… current in the Arctic Ocean. An Arctic energy harvesting system that consists of a transverse flux generator, boosted by a nozzle-diffuser-duct, and an American multiblade turbine that drives the generator, are designed in this study. The transverse flux generator is then optimized based on its …
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RF Harvesting System for Remotely Powered Wireless Sensor Nodes
… An effective co-design approach for RF harvesting systems is described, which is based on a CMOS differential drive rectifier and an inductively coupled loop (ICL) antenna. The proposed methodology acts on both rectifier and antenna, and aims at optimizing system performance in terms of …
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Pavement electromagnetic energy harvesting system from highway-speed vehicles
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Systems Dynamics Simulation To Improve Timber Harvesting System Management
… models were developed to address harvest system - stand assignment and wood flow variability problems in the southeast United States. The Harvest System Assignment (HSA) model is used to evaluate the impact of a particular stand assignment on harvest system effectiveness and is designed to …
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A study of a piezoelectric energy harvesting system using magnetorheological fluids
… reports the study of a piezoelectric energy harvesting system using a thin layer of magnetorheological fluid as a soft impact mechanism to enhance the frequency of the energy generator. Currently, the major bottleneck of vibration energy harvesting is the dynamic nature of vibrations in the …
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A 1-mW vibration energy harvesting system for moth flight-control applications
… methodologies required to build a 1-mW energy-harvesting system for moth flight control applications. The crepuscular hawk moth Manduca sexta is the chosen test subject. This project is part of the Hybrid Insect MEMS (HI-MEMS) program. The objective of the program is to establish an interface …
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Logging in the Streamside Management Zone: Effects of Harvesting System and Intensity on Visual Soil Disturbance
… protect and maintain water quality during timber harvesting operations. In the southeastern United States timber harvesting is typically allowed inside the SMZ, but there is little information regarding suitable types of harvesting systems and the acceptable amount of canopy cover. The effects of …
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Design and analysis of a thermoelectric energy harvesting system for powering sensing nodes in nuclear power plant
In this work, a thermoelectric energy harvester system aimed at harvesting energy for locally powering sensor nodes in nuclear power plant coolant loops has been designed, fabricated and tested. Different mathematical modeling methods have been validated by comparing with experimental results. The …
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A Computer Simulation Model for Predicting the Impacts of Log Truck Turn-Time on Timber Harvesting System Productivity
… developed to represent a logging contractor's harvesting and trucking system of wood delivery from the contractor's in-woods landing to the receiving mill. The Log Trucking System Simulation model (LTSS) focuses on the impacts to logging contractors as changes in truck turn times cause an …
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Effect of sodium catchments on soluble soil salts, leaf ion concentration, and the yield of fruit in a water harvesting system.
… in the STCA and one site chosen Outside Water Harvesting System (OWS). Also, 12 soil samples were collected from the three sites at different depths in CWW. Soil samples were then analyzed for pH, EC, C²⁺, Mg²⁺, Na⁺, K⁺, Cl⁻ and SO₄⁻². Four runoff samples were collected at CWW and their EC, …
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New Three Phase Photovoltaic Energy Harvesting System for Generation of Balanced Voltages in Presence of Partial Shading, Module Mismatch, and Unequal Maximum Power Points
… in all forms of renewable energy generation systems have been growing rapidly due to growth rate and climate concerns. Increased use of clean renewable energy resources such as hydropower, wind, solar, geothermal, and biomass is expected to noticeably alleviate many present environmental …
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Production and cost analysis of two harvesting systems in central Appalachia
… are major factors when considering which type of harvesting system to operate. Observations were conducted on manual and mechanized harvesting operations in central Appalachian hardwood forest sites in order to obtain time study data. Production and cost analysis were conducted on the harvesting …
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Design and analysis of an ASIC for energy harvesting applications
… conditioning circuits of a piezoelectric energy harvesting system. Commercial piezoelectric generators with a frequency range of 26 – 205 Hz were used to convert kinetic energy to electric energy. A 6 stage AC/DC charge pump designed by a previous student was redesigned to multiply the output …
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Optimization of a Plate Beam System for Energy Harvesting Using a Piezoelectric Material
… an examination of the potential of energy harvesting with smart materials technology and its practical applications. The energy harvesting system considered here works on generating energy through vibrations of a piezoelectric material beam which will undergo sustained vibrations due to …
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Sizing the first flush and its effect on the storage-reliability-yield behavior of rainwater harvesting in Rwanda
Rainwater harvesting is a technology used to supply water for domestic purposes in developing countries. Rooftop rainwater harvesting involves collection of rainwater from a rooftop via a guttering system and storage in a cistern. During dry weather, dust and other pollutants accumulate on the roof …
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