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Now showing items 21-30 of 87
Wavelet based distortion measurement and enhancement of ECG signal
(Institute of Electrical and Electronics Engineers (IEEE), 2012-02-27)
This paper describes the research carried out to eliminate the noise found in ECG signal and cardiac rhythm using Coiflet wavelet since its scaling function is closely related to the shape of ECG and suited for denoising ...
Response of induction motor to balance voltage sags and momentary interruption
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
This paper presents result of experimental study of induction motor behavior when subjected to voltage sags and interruption. Small induction motors were used to investigate this phenomenon. A shaffner “Profline 2100” EMC ...
Comparison of flux density between different thicknesses of non oriented electrical steel material using FEM software
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
Generally, 0.35mm has better performance than 0.5mm thickness of material in terms of losses reduction and money saving potential. This paper presents the comparison of the 0.35mm and 0.5mm thickness of non oriented ...
K-factor due to implementing of DC unbalanced/balanced of a transformer
(Institute of Electrical and Electronics Engineers (IEEE), 2007-12-04)
This paper presents the effects of harmonic distortion on loaded single phase two winding transformer.The impact on K-factor is studied by implementing DC unbalanced and balanced configurations. The measurements are done ...
A study on voltage sag in industry system with adjustable speed drive
(Universiti Malaysia Perlis (UniMAP), 2008-03-15)
The awareness of electric power quality has increased over the past decade as electronic equipment has become more susceptible to power disturbances. The most distruptive power disturbances is voltage sags. Voltage sags ...
Harmonic performance of single phase transformer with DC biased
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
Direct current (DC) flowing through the earthed
neutrals of transformer windings causes a DC
component in magnetizing current. Owing to nonlinearity,
the waveform of this current is strongly
distorted. A high enough ...
Investigation of influence of voltage source type on harmonic characteristics
(Institute of Electrical and Electronics Engineers (IEEE), 2010-06-23)
This paper discussed about influence of voltage source types on harmonic characteristics. Usually, the voltage source is sinusoidal. But in actually, the condition of the load is has voltage sources through the elements ...
Testing of contactors under voltage sag and non-sinusoidal voltage conditions
(Institute of Electrical and Electronics Engineers (IEEE), 2010-11-29)
Sensitivity of electromagnetic contactors for voltage sags and non-sinusoidal voltage supply has been carried out by laboratory testing. Effects of sag characteristics such as; sag magnitude, sag duration and point on wave ...
Diagnosis of MV oil filled cable terminations with X-ray imaging and infrared (IR) thermography
(Science Publications, 2007)
A main purpose of doing a diagnostic in cable system including its accessories such as impregnated paper insulated oil filled cable termination is to predict failure before they occur. Those cable and accessories, which ...
Performace of wind turbine based on wind speed data and turbine tower height in Kangar, Northern Malaysia
(Australian Journal of Basic and Applied Sciences, 2011-07)
This paper presents an analysis of the wind speed characteristic in Kangar, Northern Malaysia. The Weibull distribution function is applied to analyze the wind speed characteristic and used to calculate the wind power ...