Open AccessLow‐loss and lightweight magnetic material for electrical machinery
Author(s) -
Ahmadi Farzad,
Sozer Yilmaz,
Donahue Michael J.,
Tsukerman Igor
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2019.0430
Subject(s) - stator , materials science , core (optical fiber) , magnetic core , rotor (electric) , coating , electrical steel , torque , magnetic flux , torque density , magnetic reluctance , permeability (electromagnetism) , mechanical engineering , composite material , magnetic field , electrical engineering , magnet , engineering , electromagnetic coil , membrane , physics , genetics , quantum mechanics , biology , thermodynamics
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.