Low‐loss and lightweight magnetic material for electrical machinery. Issue 2 (14th January 2020)

• Record Type: Journal Article
• Authors: Ahmadi, Farzad; Sozer, Yilmaz; Donahue, Michael J.; Tsukerman, Igor
• Is Part Of: IET electric power applications. Volume 14:Issue 2(2020)
• Page Start: 282
• Page End: 290
• Publication Date: 2020-01-14
• Subjects: reluctance machines -- rotors -- magnetic materials -- stators -- iron alloys -- nickel alloys -- cobalt alloys; insulation coating -- magnetic measurements -- core loss -- rotor core -- electrical machinery -- core material -- insulated magnetic microwires -- magnetic material -- rotor‐stator -- synchronous reluctance machine -- size 127.0 mum -- size 33.0 mum -- FexNi29Co17; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2019.0430
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : A low‐loss and lightweight core material, with applications in electrical machinery, is made of highly packed and insulated magnetic microwires (MWs). These MWs are aligned in such a way as to guide the flux in the rotor/stator, with the ultimate goal of increasing the efficiency and substantially reducing core losses. Commercial F e bal N i 29 C o 17 ‐based MWs with a 127 μm diameter and a 33 μm insulation coating are utilised. The magnetic measurements of the fabricated sample demonstrate the high permeability and low core loss in a wide range of frequencies. To prove the utility of this type of material, the authors used it in the rotor core of a prototype 25 W three‐phase synchronous reluctance machine. The core is lighter and the losses are significantly lower than in conventional core materials under the same torque density.