Prototype of Magnetic Energy Harvesting Device with Bistable Magnetic Device Using FeCoV Magnetic Wire.

Abstract

　The purpose of this study is the application of bistable magnetic device (BMD) to magnetic energy harvesting (MEH). This paper presents the new large-diameter BMD for the application to energy harvesting. To improve the BMD output characteristics, multiple twists were applied to the FeCoV wire with a diameter of 1 mm. As a result, it was confirmed that the applying twists reduced the pulse-induced magnetic field and increased the output peak voltage. In addition, the prototype MEH-device using this BMD was able to generate approximately 5 mW of DC power in the magnetic field of 10 mT.