In this paper, a Switched Reluctance Motor (SRM) drive system is proposed to make trade-off between torque profile and vibration amplitude. the system, power factor correction fast demagnetization are achieved using single-phase Vienna rectifier as front-end converter for SRMs with nominal voltage equal half DC-link voltage. The three-level provides doubled negative in demagnetization, resultin...

Hysteresis loops of Nd-Fe-B magnets with different surface roughness are measured in order to investigate the surface effect on nucleation for magnetization reversal. The roughness affects both coercivity and the demagnetization process. This behavior is considered to be caused by the 90° domain wall pinning of the line scratches.

70% of the patients affected by PSP are not correctly diagnosed in the first 2 to 3 years of the disease. I personally have followed three patients who at CT presented the features of PSP while none of them showed clinical signs definitively suggestive of the disease. This suggests that the CT findings could be present before the complete clinical manifestation of the syndrome, at least in a nu...

Note describes two experiments made to explore basic properties of permanent magnet (PM) material and to obtain “first hand” experience. In the first experiment, magnetic moments of NdFeB permanent magnets (PM) were fine tuned. The magnetic moment spread among 17 PM magnets was reduced by a factor of 5 from 2.8% to 0.5%. The note describes setup used for magnetization and presents result. The s...