Abstract
The potential of water-quenched amorphous magnetic microwires in magnetic core applications is assessed by electromagnetic simulation. Simulations were performed based on microwires incorporated into two configurations: (1) a regular rod inductor and (2) an air-gapped toroidal inductor. Each model utilizes a cylindrical magnetic element of 100 microns in diameter, surrounded by a copper winding element that carries an alternating current at a frequency f =100 kHz. These models considered amorphous Fe(Co)SiB microwires specified by their experimentally determined B-H response as well as two benchmark core materials – soft ferrite (MnZn-oxide type) and Metglas (2605SA1). Simulation results indicate that the microwire material exhibits a higher degree of magnetization alignment along its length under the electromagnetic field created by the loop current, relative to the other two cores. The microwire configuration also exhibits improved core inductance by as much as 30% compared to those of the other two materials. These results demonstrate that amorphous magnetic microwires have intriguing potential in inductive applications.
Highlights
The advancement of next-generation power electronic devices with improved energy efficiency and compact size requires the development of new types of soft magnetic cores.1 Recently, Fe(Co)SiB-based amorphous magnetic microwires have been assessed to exhibit favorable and unique magnetic properties relative to current commercially-available core materials, including soft ferrite, silicon steel, and Metglas,2 and are thought to have intriguing potential in inductive applications
The microwire configuration exhibits improved core inductance by as much as 30% compared to those of the other two materials. These results demonstrate that amorphous magnetic microwires have intriguing potential in inductive applications
Simulation results confirm an improved magnetization alignment and amplified core inductance in amorphous magnetic microwires as compared to those of two benchmark core materials – soft MnZn-oxide ferrite and Metglas – and of the air core. These results demonstrate that the amorphous magnetic microwires have intriguing potential as core materials for inductive applications
Summary
The advancement of next-generation power electronic devices with improved energy efficiency and compact size requires the development of new types of soft magnetic cores. Recently, Fe(Co)SiB-based amorphous magnetic microwires have been assessed to exhibit favorable and unique magnetic properties relative to current commercially-available core materials, including soft ferrite, silicon steel, and Metglas (sheet or ribbon form), and are thought to have intriguing potential in inductive applications. Fe(Co)SiB-based amorphous magnetic microwires have been assessed to exhibit favorable and unique magnetic properties relative to current commercially-available core materials, including soft ferrite, silicon steel, and Metglas (sheet or ribbon form), and are thought to have intriguing potential in inductive applications. In specific, these ferromagnetic metallic microwires are fabricated into long lengths (∼102 – 103 m) with ease using the in-rotatingwater quenching technique.. These ferromagnetic metallic microwires are fabricated into long lengths (∼102 – 103 m) with ease using the in-rotatingwater quenching technique.2,3 These microwires feature an amorphous microstructure with minimal magnetocrystalline anisotropy and relatively high electrical resistivity, resulting in reduced losses.. Amorphous magnetic microwires exhibit enhanced magnetization alignment along the length due to shape anisotropy arising from the long cylindrical geometry and due to magnetoelastic anisotropy arising from the unique distribution of internal quenched-in stresses. Further, a thin oxide surface layer (20 – 40 Å) is formed during solidification through water quenching that provides an electrically resistive coating that is hypothesized scitation.org/journal/adv to preclude the need for extensive insulating laminations in core components
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
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 call
