Now showing items 61-80 of 114
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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 new switching scheme for Z-source inverter to minimize ripples in the Z-source elements
(Springer Verlag, 2012-04)This paper presents a modification in pulse width modulation (PWM) scheme with unequal shoot-through distribution for the Z-source inverter (ZSI) which can minimize ripples in the current through the Z-source inductors as ... -
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 ... -
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 ... -
An application of artificial bee colony algorithm with least squares support vector machine for real and reactive power tracing in deregulated power system
(Elsevier Ltd., 2012-05)This paper presents a new method for real and reactive power tracing in a deregulated power system by introducing the hybrid artificial bee colony (ABC) algorithm and least squares support vector machine (LS-SVM), namely ... -
Capacitive micromachined ultrasonic tranducers: Technology and application
(Elsevier B.V., 2012-03)Capacitive micromachined ultrasonic tranducers (cMUTs) have recently emerged as an alternative to conventional piezoelectric transducers. They offer many advantages in terms of bandwidth, fabrication of layer arrays, ... -
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 ... -
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 ... -
Reactive power tracing in pool-based power system utilising the hybrid genetic algorithm and least squares support vector machine
(The Institution of Engineering and Technology, 2012-02)This study presents a new method for reactive power tracing in a pool-based power system by introducing the hybrid genetic algorithm and least squares support vector machine (GA-LSSVM). The idea is to use GA to obtain the ... -
Evaluation of in-plane flux distribution in 3phase 100kVA transformer core
(Praise Worthy Prize S.r.l., 2012-06)These papers describe the result of measurement and evaluate the behaviours of inplane flux distribution on 100kVA 3phase distribution transformer assembled with the combination of 60°-45° T-joint. Methodology that is used ... -
Comparison study on chebyshev and composite lowpass filter for harmonic rejection in two ways radio
(Elsevier Ltd., 2013)The paper is on a comparison study on Chebyshev and Composite lowpass filter designed at 300-400 MHz used for harmonic rejection in two ways radio. The filter is used to attenuate harmonic that generated by power amplifier ... -
Comparison study on chebyshev and composite lowpass filter for harmonic rejection in two ways radio
(Malaysian Technical Universities Network (MTUN), 2012-11-20)The paper is on a comparison study on Chebyshev and Composite lowpass filter designed at 300-400 MHz used for harmonic rejection in two ways radio. The filter is used to attenuate harmonic that generated by power amplifier ... -
Optimal overcurrent relay coordination: a review
(Elsevier Ltd., 2013)This paper presents an overview on optimal overcurrent relay coordination in protection system and protective relays. Efforts have been made to include all methods used for the coordination of overcurrent relays. It includes ... -
Teaching distance relay using Matlab/Simulink graphical user interface
(Elsevier Ltd., 2013)This paper describes the modeling of distance relay using Matlab/Simulink package. SimPowerSystem toolbox was used for detailed modeling of distance relay, transmission line and fault simulation. Inside the modeling, single ... -
Effect of lattice constant on band-gap energy and optimization and stabilization of high-temperature In xGa 1 -xN quantum-dot lasers
(Springer US, 2012-07)We analyze the effect of the lattice constant on the band-gap energy of In x Ga1−x N and optimize the structure of the device with a separate-confinement heterostructure. To vary the lattice constants, we change the In ... -
Realibility enhancement of a traffic signal light system using a mean-variance approach
(ICIC International, 2012-08)Traffic accidents cause tragic loss of life, property damage and substantial congestion to transportation systems. A large percentage of crashes occur at or near intersections. Therefore, traffic signals are often used to ... -
Relationship between the solar radiation and surface temperature in Perlis
(Trans Tech Publications, Switzerland., 2012-06)Statistical models for predicting the solar radiation have been developed. In any prediction of the solar radiation, an understanding of its characteristics is of fundamental importance. This study presents an investigation ... -
Building factor of Grain-Oriented Silicon Iron (3% SiFe) with different thickness on 100kVA three phase distribution transformer core
(Trans Tech Publications., 2012-03)The power loss in laminated transformer cores is always greater than the nominal loss of the electrical steel laminations, by a factor known as the building factor. This paper discussed result of an investigation towards ... -
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 ... -
A review on existing and future energy sources for electrical power generation in Malaysia
(Elsevier Ltd., 2012-08)As the electricity demand is affected by population growth, Malaysia towards an industrialized nation is considering the options for future energy sources for its power generation. Besides the conventional four-fuel mix, ...