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6 results for “sinusoidal source”
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Research ArticleOpen accessPhrase in the titleThe Effects of Harmonic Components on Transformer Losses of Sinusoidal Source Supplying Non-Linear LoadsI. Daut, H. S. Syafruddin, Rosnazri Ali et al.An important consideration when evaluating the impact of harmonics is their effect on power system component and loads. Transformers are major components in power systems. The increased losses due to harmonic distortion can cause excessive losses and hence abnormal temperature rise. The measurement of iron losses and copper losses of single-phase transformers is important in particular for transformers feeding nonlinear … …American Journal of Applied Sciences, Vol. 3, Issue 12 · 31 Dec 2006 · 8,401 accessesView PDFCite
Research ArticleOpen accessIn the abstractModeling and Simulation of a Novel Switched Reluctance Motor Drive System with Power Factor ImprovementG. Venkatesan, R. Arumugam, M. Vasudevan et al.This study presents a novel Switched Reluctance Motor (SRM) drive system with power factor improvement. Recently, many of the converters with variable speed drives have no input power factor correction circuits. This results in harmonic pollution of the utility supply, which should be avoided. The effect of power factor variation in terms of harmonic content is also analyzed in this … …American Journal of Applied Sciences, Vol. 3, Issue 1 · 31 Jan 2006 · 7,099 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordSimplified Modeling, Analysis and Simulation of Permanent Magnet Brushless Direct Current Motors for Sensorless OperationE. Kaliappan, C. ChellamuthuProblem statement: In this study, a simplified modeling and experimental analysis of Permanent Magnet Brushless DC (PMBLDC) motors for Sensorless operation using MATLAB/SIMULINK. This model provides a mechanism for monitoring and controlling the voltage, current, speed and torque response. Approach: BLDC motor is modeled as sub-blocks. The inverter and switching function are implemented as S-function builder block. The Sensorless scheme … …American Journal of Applied Sciences, Vol. 9, Issue 7 · 16 May 2012 · 7,648 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordPulse-Width-Modulation DC Chopper using LabView SoftwareMohammad K. AbuzalataProblem statement: This study concerns with designing of Pulse Width Modulation (PWM) techniques and analyzing of their waveforms to initiate a comparative numerical study. Approach: This study enables the people interesting in developing the motional control algorithms of adjustable DC drive schemes (e.g., DC-DC converters). Results: LabView software was used as a real-talk simulation environment to design and analyze of … …American Journal of Applied Sciences, Vol. 9, Issue 2 · 12 Dec 2011 · 8,593 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordNew Control Technique Applied in Dynamic Voltage Restorer for Voltage Sag MitigationRosli Omar, Nasrudin Abd Rahim, Marizan SulaimanThe Dynamic Voltage Restorer (DVR) was a power electronics device that was able to compensate voltage sags on critical loads dynamically. The DVR consists of VSC, injection transformers, passive filters and energy storage (lead acid battery). By injecting an appropriate voltage, the DVR restores a voltage waveform and ensures constant load voltage. There were so many types of the control … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 8,141 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordA Low Cost Design Solution - DSP Based Active Power Factor Corrector for SMPS/ UPS( Single Phase)Samia Pillai Pitchai, B. UmamaheswariAs per international agency regulation (IEC 1000-3-2/EN 61000-3-2) and market expectation, it is important to reduce current harmonics in the AC line current drawn by SMPS/ UPS connected to AC Mains as source and also it is desired by the user to deliver maximum power output by achieving unity power factor. To achieve the above objectives in SMPS/ UPS, APFC … …American Journal of Applied Sciences, Vol. 3, Issue 1 · 31 Jan 2006 · 6,899 accessesView PDFCite