Results 201 to 210 of about 46,330 (261)

A Modified Valley Fill Electronic Ballast Having a Current Source Resonant Inverter With Improved Line-Current Total Harmonic Distortion (THD), High Power Factor, and Low Lamp Crest Factor

open access: closedIEEE Transactions on Industrial Electronics, 2008
In this paper, a modified valley fill (VF) circuit is employed to combine with a current-fed resonant inverter as a passive high power factor (PF) electronic ballast. A conventional VF circuit limits the line current to conduct when the conduction angles are: 30deg les omegat les 150deg and 210deg les omegat les 330deg during the line period, which ...
J.C.W. Lam, P.K. Jain
exaly   +4 more sources

Predicting total harmonic distortion (THD) in ADSL transformers using behavioural modeling

open access: closedProceedings of the 2003 IEEE International Workshop on Behavioral Modeling and Simulation, 2004
As a design application, the ADSL broadband line transformer offers interesting challenges somewhat different to those in power supply design. The aspect of total harmonic distortion (THD) as affected by the nonlinear behaviour of the magnetic material in a line transformer is analysed using simulation.
P.R. Wilson, J.N. Ross, A.D. Brown
semanticscholar   +3 more sources

Total Harmonic Distortion (THD) Estimation Technique Based on Power Concept for Smart Power Meters

open access: closed2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2019
This paper proposes a time-domain total harmonic distortion (THD) estimation technique for smart power meters with significant reduction of calculation steps and high accuracy. In addition, the potential advantage of the proposed THD estimation technique is that the active and reactive power components obtained during the calculation can be further ...
Chi-Seng Lam
exaly   +3 more sources

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