Browsing School of Electrical Systems Engineering (Articles) by Issue Date
Now showing items 21-40 of 115
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Photoinduced effects in l-alanine crystals
(Elsevier B.V., 2010-09-30)An influence of the cw laser treatment at 660 nm (red), 532 nm (green) and 405 nm (blue) wavelengths on the absorption in l-alanine crystals was studied. We have established that increasing time of illumination for red ... -
Performance of photovoltaic module at different tilt angles in Perlis, Northern Malaysia
(Praise Worthy Prize, 2010-12)This paper presents a calculation of the tilt angles and the solar irradiance on PV module in Perlis, Nortern Malaysia. A mathematical modeling is used to calculate the tilt angles and the solar irradiance, which depend ... -
Rubber tire dust-rice husk pyramidal microwave absorber
(EMW Publishing, 2011)Rubber tire dust-rice husk is an innovation in improving the design of pyramidal microwave absorbers to be used in radio frequency (RF) anechoic chambers. An RF anechoic chamber is a shielded room covered with absorbers ... -
Transmission loss allocation in deregulated power system using the hybrid genetic algorithm-support vector machine technique
(Cyber Journals, 2011-01)This paper proposes a new method to trace the transmission loss in deregulated power system by incorporating the Genetic Algorithm (GA) and Least Squares Support Vector Machine (LS-SVM). The idea is to use GA to find ... -
Current perspective of the renewable energy development in Malaysia
(Elsevier Ltd., 2011-02)It is estimated that oil reserves will not last very much longer; thus, a switch to alternative energy solutions is crucial. The Malaysian government has already prepared to face the situation decades before. Many policies ... -
Fabrication and investigation of copper rotor bar on 0.5HP induction Motor-A performance and economical study
(Australian Journal of Basic and Applied Sciences, 2011-05)The paper deals with the fabrication of copper rotor bars for 0.5HP induction motor and then comparing it with the existing aluminium rotor bars. From this experiment the rotors are compared in terms of efficiency increment ... -
A hybrid particle swarm optimization approach and its application to solving portfolio selection problems
(Fuji Technology Press, 2011-06)In modern portfolio theory, the basic topic is how to construct a diversified portfolio of financial securities to improve trade-offs between risk and return. The objective of this paper is to apply a heuristic algorithm ... -
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 ... -
Combination of Hargreaves method and linear regression as a new method to estimate solar radiation in Perlis, Northern Malaysia
(Elsevier Ltd., 2011-11)The best way to obtain the solar radiation data of a particular place of interest (POI) is to measure at the specific site continuously and accurately over the long term. However, due to financial, maintenance, calibration ... -
A method for ground fault distance computation in unearthed medium voltage distribution network
(Praise Worthy Prize S.r.l., 2012)In networks with unearthed or compensated neutral, earth fault signals consist of different frequency components, which result from charging and discharging of the network capacitances. The charge transient which usually ... -
Study and simulation of an edge couple split ring resonator (EC-SRR) on truncated pyramidal microwave absorber
(EMW Publishing, 2012)Split ring resonator (SRR) structure can potentially be incorporated onto the truncated pyramidal microwave absorber. This study considers three different patterns of edge couple split ring resonator (EC-SRR) designs. Each ... -
SCPS solution for heterogeneous networks for isolated areas: a novel design approach
(ICIC International, 2012)This research presents an innovative system that has capability to prove the technical feasibility and advantages of a joint radio frequency (RF) and free space optic (FSO) system with a synchronized self-trace directional ... -
Modeling of coaxial slot waveguides using analytical and numerical approaches: Revisited
(Hindawi Publishing Corporation, 2012)Our reviews of analytical methods and numerical methods for coaxial slot waveguides are presented. The theories, background, and physical principles related to frequency-domain electromagnetic equations for coaxial waveguides ... -
Weibull and hargreaves methods to determine the wind and solar energy - Case study
(Trans Tech Publications, 2012)This paper presents a case study of Weibull and Hargreaves methods used to determine the wind speed characteristic and solar radiation pattern in Perlis the northern part of Peninsular Malaysia. These two methods are then ... -
Modeling double Blumlein with variable duration and polarity using orcad PSpice
(Elsevier Ltd., 2012)Double Blumlein generator is an excellent technique in generating high voltage short pulsed power with fast rise time signal. However properties of fixed pulse duration and polarity of Blumlein configuration limits the ... -
A novel capacitor voltage control for Z-source inverter based photovoltaic power conversion systems
(Institution of Engineers Australia, 2012)Z-source inverter (ZSI) could be used to realise both DC voltage boost and DC-AC inversion in one single stage with reduced number of power switches for photovoltaic (PV) power conversion systems (PCS). Maximum power point ... -
In house construction of an induction motor rotor by using 0.35mm thickness of steel sheet for efficiency based investigation
(Trans Tech Publications, 2012)In this paper, an in house production of a 0.5hp induction motor's rotor is investigated. This investigation considers the induction motor's efficiency and losses dissipation as an important aspect to determine the rotors ... -
A comparison on PSO variants in calculating HEPWM switching angles for a cascaded H-bridge multilevel inverter
(Springer Science+Business Media, LLC, 2012)This paper presents a comparison study on the application of various PSO algorithms in calculating the Pulse Width Modulation (PWM) switching angles of a cascaded H-bridge multilevel inverter. It aims to investigate the ... -
Unified MPPT control strategy for Z-source inverter based photovoltaic power conversion systems
(The Korean Institute of Power Electronics, 2012-01)Z-source inverters (ZSI) are used to realize both DC voltage boost and DC-AC inversion in single stage with a reduced number of power switching devices. A traditional MPPT control algorithm provides a shoot-through interval ... -
Performance improvement of spectral amplitude coding-optical code division multiple access systems using NAND detection with enhanced double weight code
(The Optical Society of Japan, 2012-01)The bit-error rate (BER) performance of the spectral amplitude coding-optical code division multiple access (SACOCDMA) system has been investigated by using NAND subtraction detection technique with enhanced double weight ...