A Novel Control of Harmonic Filters to Improve the Power System Network
Journal Title: UNKNOWN - Year 2015, Vol 4, Issue 1
Abstract
" Distortion of voltages and currents can affect the power system adversely causing power quality problems. Therefore, estimation of harmonics is of high importance for efficiency of the power system network. Non-linear devices such as power electronics converters can inject harmonics alternating currents (AC) in the electrical power system. The number of sensitive loads that require ideal sinusoidal supply voltage for their proper operation has been increasing. To maintain the quality limits proposed by standards to protect the sensitive loads, it is necessary to include some form of filtering device to the power system. Harmonics also increases overall reactive power demanded by equivalent load. Filters have been devised to achieve an optimal control strategy for harmonic problems. To achieve an acceptable distortion, increase the power quality and to reduce the harmonics hence several three phase filter banks are used and connected in parallel. In this project, high order harmonics have been suppressed by employing variants of Butterworth, Chebyshev and Cauer filters. MATLAB/SIMULINK is used to generate and analyze the different harmonics magnitude and frequency. Investigated three-phase harmonics filters are shunt elements that are used in power systems for decreasing voltage distortion and for correcting the power factor. "
Speciation Studies of Dimethyltin (IV) and Trimethyltin (IV) - Carboxylates Systems
Speciation studies of the systems involving interaction of dimethyltin(IV) [DMT]and trimethyltin (IV)[TMT] cations with adipic acid, citric acid, tartaric acid and phthalic acid have been determined in aqueous soluti...
Evaluation of Fatigue Failure of Crankshaft Work on its Bearing and Crank Pin Analytically and Numerically - A Review
The objective of this paper is to update its readers the failure of crank shaft due to the dynamic load and rotating system exerts repeated bending and shear stress due to torsion, which are common stresses acting on cra...
A Review on OFDM Technique & ITS Implementation
Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier system where data bits are encoded to multiple sub-carriers, while being sent simultaneously. This results in the optimal usage of b...
Effects of Competitive Strategies on the Performance of Mission Hospitals in Kenya (A Case of Kijabe Mission Hospital)
The current operational set-up in Kenya?s health sector is a turbulent one and highly competitive market condition. To ensure survival and sustainability in the market place, the mission hospitals require adopting a comp...
Green Synthesis of Schiff Bases by Using Natural Acid Catalysts
The utilization of green chemistry techniques are dramatically reduces chemical wastes and reaction time as recently have been proven in several organic syntheses and chemical transformations. To illustrate these advanta...