Magnetic Materials Used in Electrical Machines: A Comparison and Selection Guide for Early Machine Design

Abstract

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Advanced Ferromagnetic Materials in Power Electronic Converters: A State of the Art

“…Powder cores represent the most recent advances in magnetic materials area; those are fabricated from metallic powders, typically iron. Although those can be composed with alloys such as Fe-P, Fe-Si and Fe-Co [66], [67]. The powder cores also are known as soft magnetic composites (SMC).…”

“…• Energy core losses. In addition, it should be always kept in mind that the material performance also relies on other factors such as: quality control in the manufacturing process, concentration and particle size of the materials used in the alloy, size, volume and shape of magnetic component, losses under different waveforms, frequency operation range, and magnetic material thick, among others [67], [86]- [88].…”

Improving Performance and Extending Lifetime of PMSMs via Advanced End-Winding Cooling

“…The stator core is made of silicon steel (i.e. M330), while samarium-cobalt (SmCo) PMs are chosen instead of neodymium-iron-bore (NdFeB) ones, because of their superior capability in withstanding high operating temperatures [27]. The designed interior PMSM is characterized by 24 slots and 20 poles, as shown in Fig.…”

Development of a compact and fast trimmable FeCo magnet for medical gantries

“…Iron cobalt is a soft magnetic alloy showing a saturation polarization of up to 2.35 T (see Fig. 3) depending on its composition and state [6,7]. Usually this material is used in the construction of stator/rotor assemblies of aircraft power generators when either high magnetic field are required with as little weight as possible or when rotation frequencies are important (> 200 Hz).…”