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92 results for “infinite”
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Research ArticleOpen accessIn the abstractOptimal Control Design of Static Var Compensator for Damping Power System OscillationPrechanon KumkratugProblem statement: The disturbance in power system is unavoidable situation. It causes in power system oscillation. Approach: This study applied the Static Var Compensator (SVC) to damp power system oscillation. The optimal control design is applied to derive the control strategy of SVC. The simulation results are tested on a Single Machine Infinite bus. The proposed method is equipped in … …American Journal of Applied Sciences, Vol. 8, Issue 5 · 17 May 2011 · 7,680 accessesView PDFCite
Research ArticleOpen accessIn the abstractApplication Lyapunov Theory to Determine Control Strategy of Static Var Compensator for Damping Power System OscillationPrechanon KumkratugProblem statement: The disturbance in power system is unavoidable situation. It causes in power system oscillation. Approach: This study applied the Static Var Compensator (SVC) to damp power system oscillation. The stability criterion of the Lyapunov is applied to derive the control strategy of SVC. The simulation results are tested on a Single Machine Infinite bus. The proposed method is … …American Journal of Applied Sciences, Vol. 8, Issue 2 · 28 Feb 2011 · 7,437 accessesView PDFCite
Research ArticleOpen accessIn the abstractMathematical Modeling and Characterization of Thin Film, Narrow Gap Sensor Array Units (SAU)Mahmoud Z. IskandaraniDesign, modeling, testing and analysis multi-gap PbPc sensor array units for the purpose of gas detection are carried out. The tested devices showed reduction in conductance as a function of increasing gap width and reducing film thickness and an increase as a function of temperature up to 160°C. An observed morphological change in the sublimed film is realized at 190°C … …American Journal of Applied Sciences, Vol. 7, Issue 9 · 30 Sep 2010 · 6,859 accessesView PDFCite
Research ArticleOpen accessIn the abstractHomogeneous Bubbles during Jet Impingement QuenchingM. A. Islam, S. F. AhmedProblem statement: Jet impingement quenching has a very effective and large cooling potential and is a very effective means of cooling for many applications. It gives rise to heterogeneous and/or homogeneous nucleation of bubbles, which is yet to be explored. Approach: Analytically investigate the phenomenon that happened during a brief contact of a water jet impinging on a hot surface. … …American Journal of Applied Sciences, Vol. 7, Issue 6 · 30 Jun 2010 · 7,171 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnisotropy Influence of Cubic Solid on Dynamic Hertzian Contact Stiffness for a Vibrating Rigid IndenterJiayong TianProblem statement: Resonance-type microscopies have been widely used to evaluate the nanoscaled or microscaled surface elastic properties of materials by the resonance-frequency shifts of an oscillator, which contacts the surface of materials by a spherical tip. Approach: The tip-specimen contact is modeled to be a spring support, whose stiffness is given by the traditional Hertzian contact theory. However, because of … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 7,715 accessesView PDFCite
Research ArticleOpen accessIn the abstractTakagi-Sugeno Fuzzy Gains Scheduled PI Controller for Enhancement of Power System StabilityLokman H. Hassan, M. Moghavvemi, Haider A.F. MohamedProblem statement: Power system oscillations affect system stability and may lead to failure if not properly controlled. Approach: A Takagi-Sugeno Fuzzy Gains Scheduled Proportional and Integral (FGPI) controller was proposed for a Thyristor Controlled Series Capacitor (TCSC)-based stabilizer to enhance the power system stability. Linguistic rules and fuzzy inference mechanism are utilized to tune the controller parameters on-line in different … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 7,545 accessesView PDFCite
Research ArticleOpen accessIn the abstractElectric Power System Under-Voltage Load Shedding Protection Can Become a TrapLuiz Augusto Pereira Fernandes, Alexandre Rocco, Heraldo Silveira Barbuy, Geraldo Caixeta GuimarãesProblem statement: Under-Voltage Load Shedding (UVLS) protection of Electric Power Systems (EPS) is frequently used against Voltage Collapse (VC), however when there is automatic bus voltage regulation with excessive capacitive compensation, the UVLS scheme may not trip. In this case, load shedding must be based in a Voltage Collapse Proximity Indicator (VCPI). Many UVLS procedures may not be appropriate today. … …American Journal of Applied Sciences, Vol. 6, Issue 8 · 31 Aug 2009 · 7,207 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Impact of CRM on the Customer Satisfaction in Agricultural BankMohammad Ali Sarlak, Rasool Sanavi FardProblem statement: There is much research on this subject, but none of them is about the use of customer relationship management for boosting the bank customer satisfaction. While we have not any study about customer satisfaction in Agricultural Bank especially in Qom providence. Approach: The research method was applied one and from viewpoint of the process, was considered to be … …American Journal of Economics and Business Administration, Vol. 1, Issue 2 · 30 Jun 2009 · 8,181 accessesView PDFCite
Research ArticleOpen accessIn the abstractVoltage Collapse Risk Associated to Under-Voltage Capacitive Compensation in Electric Power System OperationHeraldo Silveira Barbuy, Alexandre Rocco, Luiz Augusto Pereira Fernandes, Geraldo Caixeta GuimarãesProblem statement: In the operation of an Electric Power System (EPS), it has been usual to provide reactive power injection to avoid an under-voltage bus condition. In some situations an adequate voltage profile will not be a guarantee against Voltage Collapses (VCs) that may cause blackouts as seen in many occurrences around the world. The repeatedly injection of reactive power … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,258 accessesView PDFCite
Research ArticleOpen accessIn the abstractLeanness Achievement through People Development System in Implementing Lean Process ManagementA. P. Puvanasvaran, C. H. Tay, M. H.M.A. Megat et al.Problem Statement: Many organizations fail to unlock the infinite potential of their workforce. In that case there will be more overhead, with more layers of management, which in turn could cause slower reaction times in fast changing business. Employees should only start, run and optimize the process, even developing themselves with the aid of People Development Systems (PDS), when they … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 8,556 accessesView PDFCite