Work

An integrated electromagnetic micro-turbo-generator supported on encapsulated microball bearings

Year: 2012

Type: conference-paper

Abstract: The development and characterization of the first integrated electromagnetic micro-turbo-generator supported on encapsulated microball bearings are reported. The device presents a novel integration of encapsulated microballs that provide a simple operation and actuation scheme, a silicon microturbine rotor with thick magnetic components for high magnetic flux density, and wafer-thick copper coils for optimum magnetic flux linkage and low coil resistance. Spin-down testing of the microturbine demonstrated dynamic friction torques of up to 33 μNm at the rotational speed of 16 krpm, corresponding to 6% turbine efficiency. A maximum perphase AC open circuit voltage of 0.1 V and power of 5.6 μW on a 220 Ω resistive load were measured; in full-agreement with theoretical estimations.

Source: Proceedings, IEEE micro electro mechanical systems

DOI: 10.1109/memsys.2012.6170406

Authors: M. I. Beyaz, B. Hanrahan, J. Feldman, R. Ghodssi

Institutions: University of Maryland, College Park, DEVCOM Army Research Laboratory

Language: English

Topic: Innovative Energy Harvesting Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: bronze

Funders: National Science Foundation, Drexel University, Army Research Laboratory