This paper presents a novel approach for fault detection and identification in order to estimate voltage sag during a fault. One of the best approaches for voltage sag estimation is instantaneous voltage estimation. The approach uses traditional state estimation where redundant measurements are available. The proposed method is used to estimate voltage sag performance during a fault. At the fau...

abstract: one the most important problems in recent sensitive loads is the quality of voltage. for this challenge custom power devices are used in distribution systems. dynamic voltage restorer (dvr) is a custom power device that improves voltage, decrease power distortion, filter harmonics and balance distributed generations (dgs) with low voltage distribution system. in this paper, a new algo...

The paper treats the application of the micromagnetic method to the determination of hardness of C45 hardened-and-tempered steel on the basis of a voltage signal of the magnetic Barkhausen noise, The specimens were hardened and tempered at different temperatures so that small differences in hardness of individual specimens and, consequently, small differences in captured voltage signals were ob...

Carbon/molecule/metal molecular junctions were fabricated by metal deposition of titanium or copper on monolayers of nitroazobenzene ~NAB!, biphenyl, and nitrobiphenyl ~NBP!, and multilayers of NAB and NBP covalently bonded to an sp2 carbon substrate. The electronic behavior of Ti junctions was extremely dependent on residual gas pressure during E-beam deposition, due to the formation of a diso...

This paper presents a micro electrostatic vibration-to-electricity energy converter based on the micro-electromechanical system. For the 3.3 V supply voltage and 1 cm chip area constraints, optimal design parameters were found from theoretical calculation and Simulink simulation. In the current design, the output power is 200 lW/cm for the optimal load of 8 MW. The device was fabricated in a si...