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 32 for “"Energy Harvesting System"”.
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Pico-grid: Multiple Multitype Energy Harvesting System
… thesis 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
Traditional small-scale vibration energy harvesters 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 …
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Ocean Current Energy Harvesting System for Arctic Monitoring
… present significant logistical challenges and energy needs for sustained Arctic observations. The Arctic project group is attempting to design a mechanical structure to harvest energy from low-speed current in the Arctic Ocean. An Arctic energy harvesting system that consists of a transverse …
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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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A study of a piezoelectric energy harvesting system using magnetorheological fluids
This thesis 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 …
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A 1-mW vibration energy harvesting system for moth flight-control applications
… and 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 …
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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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New Three Phase Photovoltaic Energy Harvesting System for Generation of Balanced Voltages in Presence of Partial Shading, Module Mismatch, and Unequal Maximum Power Points
The worldwide energy demand is growing quickly, with an anticipated growth rate of 48% from 2012 to 2040. Consequently, investments 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 …
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Design and analysis of an ASIC for energy harvesting applications
… power 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 …
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Optimization of a Plate Beam System for Energy Harvesting Using a Piezoelectric Material
… provides 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 …
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Design and Analysis of a Wind Energy Harvesting Circuit Using Piezoelectric Polymers
… thesis investigates a relatively new method for harvesting wind energy by using flexible piezoelectric polymers with additional sails to increase their ability to harvest wind energy. This paper also introduces a new topology deemed the “stacked buck” that allows for multiple inputs to a system …
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Energy Harvesting IC Design for an Electromagnetic Generator Based on the Split Capacitor Approach
The proposed energy harvesting system intends to harvest vibrational energy via an electromagnetic generator (EMG). The proposed circuit intends to extract maximum power from the EMG by utilizing the maximum power transfer theorem which states that maximum power is transferred to the load when the …
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Batteryless RF transceiver for wireless sensor networks
… applications is presented, which includes a RF energy harvesting system, a power management unit and a RF front end. The transceiver is able to operate by scavenging the required DC power from the incoming RF signal, thus avoiding the use of a battery. The use of a quartz oscillator has been …
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Multi-source energy harvesting for lightweight applications
… and tests circuit topologies for simultaneous energy harvesting from solar and 915-MHz RF energy sources. An important design objective is to minimize system weight while maximizing output power and operating time for applications in the sub-170-mg and single-mW ranges. The resulting energy …
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Wireless Information and Power Transfer Methods for IoT Applications
… Future IoT devices will require a ubiquitous energy source and will need to be capable of low power communication. RF energy can be harvested through ambient or dedicated RF sources to satisfy this energy demand. In addition, these RF signals can be modified to convey information. This thesis …
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An Investigation of Phase Change Material (PCM)-Based Ocean Thermal Energy Harvesting
Phase change material (PCM)-based ocean thermal energy harvesting is a relatively new method, which extracts the thermal energy from the temperature gradient in the ocean thermocline. Its basic idea is to utilize the temperature variation along the ocean water depth to cyclically freeze and melt a …
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Nonlinear vibration energy harvesting by intentional excitation of high-frequency dynamical instability
In this thesis, a vibration-based energy harvesting system utilizing essential (nonlinearizable) nonlinearities and various electromechanical coupling elements is investigated. These elements include electromagnetic and piezoelectric methods of energy conversion. The mechanical system of interest …
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Solar energy harvesting and software enhancements for autonomous wireless smart sensor networks
… number of new power supply options, such as energy harvesting, used in full-scale SHM applications. This research develops a solar energy harvesting system to provide power to Imote2 WSS platform and increase the long-term autonomy of wireless smart sensor networks (WSSNs). The approach is …
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Power management circuits for ultra-low power systems
… a wide range of vital tasks for electronic systems including DC-DC conversion, energy harvesting, battery charging and protection as well as dynamic voltage scaling. The impact of the efficiency of the power management circuits is highly profound for ultra-low power systems such as …
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A tilt rotor UAV for long endurance operations in remote environments
… takeoff and landing capabilities with a solar energy harvesting system. Mass and power models are developed for the proposed vehicle configuration to provide mission performance and sizing analysis. Results indicate that a feasible design exists that is capable of achieving multiple, successive …
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