In this study, we mitigated the harmonic voltage in a power system that contained roughing mill (RM) and finishing (FM) motor drives. AC/DC converter type RM drive is non-linear, large-capacity varying load adversely affects quality, e.g., flicker, distortion, etc. The drop can be compensated within certain limit by using proper capacity of capacitor bank. addition, distortion controlled as per...

The bee's characteristic response to a movement of its visual field is used for the study of the relation between critical frequency of flicker and illumination. The critical flicker frequency varies with illumination in such a way that with increasing flicker frequency the intensity of illumination must be increased to produce a threshold response in the bee. The illuminations required to give...

In this research work, deep machine learning-based methods together with a novel data augmentation are developed for predicting flicker, voltage dip, harmonics, and interharmonics originating from highly time-varying electric arc furnace (EAF) currents voltage. The aim the prediction is to counteract both response reaction time delays of active power filters (APFs) specifically designed furnace...

Light curves produced by the Kepler mission demonstrate stochastic brightness fluctuations (or "flicker") of stellar origin which contribute to noise floor, limiting sensitivity exoplanet detection and characterization methods. In stars with surface convection, primary driver these variations on short (sub-eight-hour) timescales is believed be convective granulation. this work, we improve exist...

PURPOSE To determine retinal vessel diameter variations in response to neuronal activity induced by diffuse luminance flicker. METHODS The diameter of retinal arteries and veins was measured in 9 normal subjects by computer analysis of fundus pictures taken in monochromatic light under normal conditions of illumination and after 1 min of sinusoidally varying diffuse luminance flicker at 10 Hz...

– The voltage fluctuations of the electrical power supply and their effects on both industrial and domestic apparatuses are today a central topic of discussion. The aim of this paper is the evaluation of the effects of the low-frequency voltage amplitude modulation on induction motors, with both numerical and experimental analysis. For the numerical analysis different kinds of modulations have ...

1. We have studied the sensitivity of macaque retinal ganglion cells to sinusoidal flicker. Contrast thresholds were compared for stimuli which alternated only in luminance ('luminance flicker') or chromaticity ('chromatic flicker'), or which modulated only the middle- or long-wavelength-sensitive cones ('silent substitution'). 2. For luminance flicker, the lowest thresholds were those of phasi...

In this study, the impacts of gate recess and passivation on AlGaN/GaN high electron mobility transistors (HEMTs) were investigated. The trap-related characteristics were studied in detail by several different measurements including dc current– voltage, current collapse, gate lag, and flicker noise characterizations. With a Cl2/Ar-recessed gate, drain current collapse factors ( Imax) of 37:5 an...