Design and electromagnetic optimization of a respiration harvester

Date

2014-09-10

Author

Goreke, Utku
Azgın, Kıvanç
Beyaz, Mustafa Ilker

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

129
views

0
downloads

This work reports the design and electromagnetic optimization of a MEMS-scale turbo generator for harvesting fluidic energy in human exhalation. The device is composed of a turbine with dual -layer integrated permanent magnets, ball bearings, and stators with micro coils. For an efficient energy conversion, number of magnetic poles should be optimized to obtain maximum flux density in a given device geometry, where magnetic reluctance and leakage act as two competing effects. This optimization has been performed for different commercially available magnet thicknesses with fixed inner and outer radii of 2 mm and 8 mm, respectively. It has been shown that the optimum number of poles for 0.5 mm -thick magnets is 28, while pole numbers as high as 32 lead to higher flux densities for thinner magnets. The results presented here shed light on the efficient design of magnetic micromachines in similar scales.

Subject Keywords

Energy harvester, Permanent magnet, Microgenerator, Microturbine, Respiration, Power mems

URI

https://hdl.handle.net/11511/46376

DOI

https://doi.org/10.1016/j.proeng.2014.11.731

Collections

Department of Mechanical Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

A wideband electromagnetic micro power generator for wireless microsystems Sari, Ibrahim; Balkan, Tuna; Külah, Haluk (2007-06-14) This paper presents a wideband electromagnetic (EM) vibration-to-electrical power generator which can efficiently scavenge energy and generate steady power over a predetermined frequency range. Power is generated by means of electromagnetic induction using a magnet and coils on top of resonating cantilever beams. The reported generator covers a wide band of external vibration frequency by implementing a number of serially connected cantilevers in different lengths. The device generates 0.5 mu W continuous p...
Optimization of AA-Battery Sized Electromagnetic Energy Harvesters: Reducing the Resonance Frequency Using a Non-Magnetic Inertial Mass Yasar, Oguz; Ulusan, Hasan; Zorlu, Ozge; Sardan-Sukas, Ozlem; Külah, Haluk (2018-06-01) This paper presents an optimization study for a miniature electromagnetic energy harvester, by incorporating a non-magnetic inertial mass (tungsten) along with the axially oriented moving magnets. The aim is to decrease the operation frequency and increase the output power of the harvester with the usage of higher density material and larger magnetic flux density. Dimensions of the magnets are optimized according to the harvester dimensions and magnetic flux gradients. Additionally, coil length, width, resi...
A Vibration-Based Electromagnetic Energy Harvester Using Mechanical Frequency Up-Conversion Method Zorlu, Ozge; Topal, Emre Tan; Külah, Haluk (2011-02-01) This paper presents a new vibration-based electromagnetic energy harvester using a mechanical frequency up-conversion method for harvesting energy from external low-frequency vibrations within a range of 1-10 Hz. The structure consists of a magnet placed on a diaphragm, a polystyrene cantilever carrying a pick-up coil, and a mechanical barrier which converts low-frequency vibrations to a higher frequency, hence increasing the efficiency of the system. The tested structure proved to generate 88.6 mV and 544....
Modeling, Analysis and Control of an Isolated Boost Converter for System Level Studies Zahedi, Bijan; Norum, Lars E. (2011-09-10) This paper performs a modeling of an isolated full bridge boost converter that suits the system level studies of power electronic -based systems. For system level studies, in which large signal models must be developed, linearized average value models are invalid. Large signal analysis can be carried out by nonlinear State Space models. In this paper generalized state space averaging method is adopted to include ripple modeling for higher accuracy. The obtained model is compared to a number of other averagi...
Fully Self-Powered Electromagnetic Energy Harvesting System With Highly Efficient Dual Rail Output Rahimi, Arian; Zorlu, Ozge; Muhtaroglu, Ali; Külah, Haluk (2012-06-01) This paper presents a vibration-based energy harvesting system composed of a compact electromagnetic (EM) power generator and highly efficient full-wave interface electronics in a system-on-package. The system harvests energy from ambient vibrations, and delivers a smooth and reliable dual rail DC supply to power up a practical load. The energy harvester module is an in-house double-coil EM transducer which generates AC voltage in response to low frequency ambient vibrations. Voltage regulation is achieved ...

Citation Formats

U. Goreke, K. Azgın, and M. I. Beyaz, “Design and electromagnetic optimization of a respiration harvester,” 2014, vol. 87, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46376.