Abstract
This article presents a model to simulate the behavior of a magnetic shape memory alloy while harvesting vibratory energy. In this type of energy harvester, magnetic shape memory alloy element is placed in the air gap of a ferromagnetic core which conducts the magnetic flux. Two apparent coils are wound around a ferromagnetic core: one to produce bias magnetic field by passing a rectified electric current and the other to serve as an energy pickup coil. Applying compressive time-variant strain field to magnetic shape memory alloy element changes its dimensions and magnetic properties as well. Presence of the bias magnetic field returns magnetic shape memory alloy element to its initial state while removing the load. Changes in magnetic properties of magnetic shape memory alloy will change the magnetic flux passing through the pickup coil and will produce an alternative voltage in that coil based on the Faraday’s law of induction consequently. In the modeling strategy, magnetic behavior of magnetic shape memory alloy element during operation is obtained by solving the thermodynamic-based constitutive equation numerically and the energy harvesting process modeled with equivalent magnetic and electric circuits. By varying the system parameters in the model, output voltage and power changes are reported accordingly.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Intelligent Material Systems and Structures
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
