Variable speed drive systems of brushless DC motors have been widely used for industry applications, home electric appliances, and so on, due to the progress of the power electronics, because of simple structure, easy maintenance, high efficiency, etc.. Moreover, because the brushless DC motor can realize the same high performance as DC motor, it is used in the fields where the high speed and h...

The dielectric behavior of SrTiO3 thin films prepared by the pulsed-laser deposition technique on SrTiO3 single-crystal substrates is studied under dc electric field. A high dielectric constant maximum «max(;2280) and a low-loss tan d (;0.001) are obtained. Compared with the observation in SrTiO3 single crystals, an additional dielectric loss peak with frequency dispersion is observed around 15...

The dc electric-field dependence of dielectric constant in the paraelectrics, KTaO3 single crystals, CaTiO3 and (Ln1/2Na1/2)TiO3 (Ln5La and Nd! ceramics is studied at cryogenic temperatures in the dc electric-field range 0–60 kV/cm. The results indicate that KTaO3 possesses a high tunability K$5@e(E0)2e(E)#/e(E0) 5;50%% at 20 kV/cm, and low dielectric loss tan d (;0.003); while CaTiO3 and (Ln1/...

Abstract. Japan Atomic Energy Agency as the JApan Domestic Agency (JADA) for ITER and the Domestic Agency of EU (EUDA) agreed the procurement sharing for the ITER NBI power supply system. The JADA contributes procurement of dc -1 MV ultra-high voltage (UHV) components such as a -1 MV dc generator, a transmission line and a -1 MV insulating transformer. The dc UHV insulation has been carefully a...

Understanding the ageing mechanisms of electronic components critical avionics systems such as the GPS and INAV are of critical importance. Electrolytic capacitors and MOSFET’s have higher failure rates among the components of DC-DC power converter systems. Our current work focuses on analyzing and modeling electrolytic capacitor degradation and its effects on the output of DC-DC converter syst...

Dielectrophoresis is a method of rapid response with sufficient selectivity for manipulation and separation of bioparticles, such as: microorganisms and biomolecules. Due to the great importance of proteins in the biotechnological and pharmaceutical processes, the present study demonstrates the potential of the insulator-based dielectrophoresis (iDEP) and DC electric fields to manipulate and co...