On the modeling and optimization of an electromagnetic energy harvester

Airton J. Schmitt Jr.; Júlio A. Cordioli; Danilo Braga; Maurício V. Ferreira da Luz

doi:10.1117/12.2658581

28 April 2023 On the modeling and optimization of an electromagnetic energy harvester

Airton J. Schmitt Jr., Júlio A. Cordioli, Danilo Braga, Maurício V. Ferreira da Luz

Proceedings Volume 12483, Active and Passive Smart Structures and Integrated Systems XVII; 124831P (2023) https://doi.org/10.1117/12.2658581
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Conference Poster

Abstract

The interest in modeling and prototyping the so-called Vibration Energy Harvesters (VEHs) has increased significantly in the last decades, given the growing demand for energy sources that can capture energy from the vibration of a machine, for example, to power small sensors and vibration monitoring devices. In this work, the design and optimization of a commercial Electromagnetic Vibration Energy Harvester (EMVEH) are presented. Such a device contains in its interior a resonant-type electromagnetic transducer, the latter composed basically by a seismic mass, a mechanical spring and a multi-turn coil. The complete set weighs about 90 g and occupies a total volume of approximately 50.97 cm³, being able to generate up 45mW at its resonance frequency of 60 Hz, with a bandwidth of 2.5 Hz. Furthermore, the linear generator presented in this paper reaches a maximum Normalized Power Density (NPD) of 1.8018mW/(cm³g²) at an acceleration amplitude of 0.7 g (∼ 6.67m/s²). To proceed with electromechanical modeling and further optimization, a numerical model was developed via commercial software COMSOL Multiphysics, from which it was possible to optimize its geometry in order to maximize its NPD and power output. A Surrogate optimization algorithm was then implemented in MATLAB, in which both volume and mechanical stress were considered as project constraints.

Citation Download Citation

Airton J. Schmitt Jr., Júlio A. Cordioli, Danilo Braga, and Maurício V. Ferreira da Luz "On the modeling and optimization of an electromagnetic energy harvester", Proc. SPIE 12483, Active and Passive Smart Structures and Integrated Systems XVII, 124831P (28 April 2023); https://doi.org/10.1117/12.2658581

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available