Searched for: subject%3A%22Energy%255C%2BHarvesting%22
(1 - 20 of 86)

Pages

document
Rietmeijer, Stijn (author)
Vibration energy harvesting is a growing field of research. Harvesting energy from vibrations can be of use in devices in hard to reach places, such as sensors on a train track or a pacemaker. These devices makes use of batteries, which need to be replaced. Using energy harvesting this battery life could be improved. <br/>The difficulty lies in...
master thesis 2022
document
Hendriks, John (author)
This work presents the first robust connection mode for Bluetooth Low Energy on an energy harvesting sensor.
master thesis 2022
document
Candeloro, Paolo (author), Martellini, Edoardo (author), Nederlof, R. (author), Sinnige, T. (author), Pagliaroli, Tiziano (author)
The aim of the present manuscript is to investigate the noise footprint of an isolated propeller in different flight configurations for the propulsion of a hybrid-electric aircraft. Experimental tests were performed at the Low-Turbulence Tunnel located at Delft University of Technology with a powered propeller model and flush-mounted microphones...
journal article 2022
document
Campos Martins, G. (author)
This thesis presents the design and measurement of an RF energy harvesting and power management unit that operates across a wide range of available input power. The system comprises an adaptive impedance matching network, a single-stage cross-coupled differential-drive rectifier, a start-up charge pump, an adaptive buck-boost converter, a...
doctoral thesis 2021
document
Kapildewsing, Rajiv (author)
Vibration energy harvesters can help in different areas. These vary from supplying power to medical implants or wireless sensors that can aid in predicting natural disasters. However, the problem is that they are not able to generate power across a large bandwidth of frequencies. Bistable energy harvesters can solve this problem when these are...
master thesis 2021
document
Nieuwland, Marsha (author)
Vibration energy harvesters have been proposed as a solution to increase the lifetime of wireless and portable medical devices. One example of implantable medical devices for which energy harvesters could be interesting, are pacemakers. With a lifespan of about 6 to 12 years, the battery must be replaced after this period of time. Using an...
master thesis 2021
document
Blad, Thijs (author)
Miniaturized vibration energy harvesters can provide an alternative to batteries in powering the billions of low power devices we use today by extracting power from ambient motion. Especially for implanted medical devices, these alternative power sources may be an attractive option to overcome the limitations on longevity and the replacement...
doctoral thesis 2021
document
van der Velden, Joram (author)
This work proposes an energy harvesting platform that is able to convert power from both DC sources (photo-voltaic cells and TEGs) as well as piezo element sources. It does so only using a single input channel to which a single harvester can be connected. The proposed system is able to differentiate between the two source...
master thesis 2021
document
Ham, Rutger (author)
Vibration energy harvesting has proven to be a durable source of energy for a wide variety of applications, however not all of the positions these applications are placed at are suitable for conventional vibration energy harvesting. For some of these applications a frequency up-converted energy harvester could increase the power harvested. These...
master thesis 2021
document
Gaya, Vinay (author)
We live in a society in which we rely heavily on energy. We need it everywhere and made great advancements which allow us to bring energy with us wherever we go; one of these advancements are batteries. In order to be less dependent and generate our energy locally when needed this project focusses on this topic. Creating a design framework which...
master thesis 2021
document
van Puffelen, Kylian (author)
Energy harvesting from renewable energy sources has become more popular in the last decades than ever before. New energy sources consisting of human input vibrations are hopeful alternatives for powering wearable low power electronics. These sensors currently rely on the lifetime of the battery and come along with high maintenance costs in case...
master thesis 2021
document
Wouters, Max (author)
Vibration energy harvesters are especially interesting to use in an environment where there is one dominant vibration frequency present because then the harvesters can be designed to resonate at that specific frequency. To spread out the power yield over more frequencies a multi-modal harvester can be used which can resonate at multiple...
master thesis 2021
document
Bastiaanse, Robin (author)
A pacemaker runs on a conventional battery that lasts for approximately 6-12 years, after which the pacemaker must be replaced. Converting the heart wall vibrations into electricity through a vibration energy harvester has been considered a promising solution to this problem. However, the complexity of the heart signals on which the energy...
master thesis 2021
document
van de Wetering, Erik (author)
In the field of vibration energy harvesting, vibration energy is tranduced to electrical energy to power small, low powered devices. Many energy harvesters are produced in the form of a resonator, where resonant amplification enables efficient operation of the energy harvester. At low frequencies below 10 hz, input motions quickly increase for a...
master thesis 2021
document
Molenaar, Stefan (author)
Vibration energy harvesting is a promising step towards a more sustainable society. The world is getting more and more connected through electronic devices, which all require electrical energy. A battery can deliver electrical energy; however, such a battery needs to be replaced or recharged; this is where energy harvesters become interesting....
master thesis 2021
document
Numić, Armin (author)
Bistable vibration energy harvesters are an interesting alternative to their linear counterparts. They allow for large amplitude oscillations between their stable equilibria, from which much energy can be generated. However, the stable equilibria are separated by a potential energy barrier that has to be overcome. Therefore, we cannot guarantee...
master thesis 2021
document
van Kessel, C.L. (author), Bauer, P. (author), Ferreira, Jan Abraham (author)
Dielectric elastomer transducers (DETs) are commonly modeled by lumped-element models (LEMs), however such models do not capture the cutoff behavior that manifests at relatively low frequencies due to the high resistivity of the stretchable electrodes. Moreover, the contribution of the electrodes into the lumped series resistance is not...
journal article 2021
document
van de Wetering, E. (author), Blad, Thijs (author), van Ostayen, R.A.J. (author)
In this work, a stiffness compensated piezoelectric vibration energy harvester is modelled and tested for low-frequency excitations and large input amplitudes. Attracting magnets are used to introduce a negative stiffness that counteracts the stiffness of the piezoelectric beam. This results into a nearly statically balanced condition and...
journal article 2021
document
Li, Chenchen (author), Yang, Fan (author), Liu, Pengfei (author), Fu, Chaoliang (author), Liu, Quan (author), Zhao, Hongduo (author), Lin, P. (author)
To improve the energy harvesting efficiency of the piezoelectric device, a stack units-based structure was developed and verified. Factors such as stress distribution, load resistance, loads, and loading times influencing the piezoelectric properties were investigated using theoretical analysis and experimental tests. The results show that the...
journal article 2021
document
Sharma, S. (author), Simha, A. (author), Venkatesha Prasad, R.R. (author), Gokhale, V. (author), Narayana, S. (author)
In this letter, we present Hermes - a novel, low-cost, wireless, batteryless, energy harvesting system for aerial vehicles for sensing wind speed and Angle of Attack (AoA) concurrently. Hermes comprises a set of piezoelectric films which flutter due to incoming wind and the characteristics of this aeroelastic flutter are utilized for...
journal article 2021
Searched for: subject%3A%22Energy%255C%2BHarvesting%22
(1 - 20 of 86)

Pages