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Search Results: 1 - 10 of 124282 matches for " Dr. T.Jayabharathi "
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An Investigation of ANN based PID Controllers using Three- Area Load Frequency Control in Interconnected Power System
V.Shanmuga Sundaram ,,Dr. T.Jayabharathi
International Journal of Engineering Science and Technology , 2011,
Abstract: The LFC problem, which is the major requirement in parallel operation of several interconnected systems, is one of very important subjects in power system studies. In this study, the power systems with threeareas connected through tie-lines are considered. The perturbation of frequencies at the areas and resulting tieline power flows arise due to unpredictable load variations that cause mismatch between the generated and demanded powers. The objective of LFC is to minimize the transient deviations and to provide zero steady state errors of these variables in a very short time. Variation in load frequency is an index for normal operation of power systems. When load Perturbation takes place anywhere in any area of the system, it will affect the frequency at other areas also. To control load frequency of power systems various controllers are used in different areas, but due to non-linearity's in the system components and alternators, these controllers cannot control the frequency quickly and efficiently. The simple neural networks can alleviate this difficulty. This paper deals with various controllers like proportional integral (PI), Proportional Integral Derivative (PID) andANN (Artificial neural network) tuned PID controller for three area load frequency control.The performance of the PID type controller with fixed gain, Conventional integral controller (PI) and ANN based PID (ANN-PID) controller have been compared through MATLAB Simulation results. Comparison of performance responses of integral controller & PID controller show that the ANN- PID controller has quite satisfactory generalization capability, feasibility and reliability, as well as accuracy in three area system. The qualitative and quantitative comparison have been carried out for Integral,PID and ANN- PID controllers. The superiority of the performance of ANN over integral and PID controller is highlighted.
A NOVEL APPROACH OF LOAD FREQUENCY CONTROL IN MULTI ARAE POWER SYSTEM
V.SHANMUGA SUNDARAM,,Dr.T.JAYABHARATHI
International Journal of Engineering Science and Technology , 2011,
Abstract: The main objective of Load Frequency Control(LFC) is to regulate the power output of the electric generator within an area in response to changes in system frequency and tie-line loading .Thus the LFC helps in maintaining the scheduled system frequency and tie-line power interchange with the other areas within the prescribed limits. Most LFCs are primarily composed of an integral controller. The integrator gain is set to a level that the compromises between fast transient recovery and low overshoot in the dynamic response of the overall system. This type of controller is slow and does not allow the controller designer to take in to account possible changes in operating condition and non-linearities in the generator unit. Moreover, it lacks in roubustness.Therefore the simple neural networks can alleviate this difficulty.This paper presents the Artificial Neural Network (ANN) is applied to self tune theparameters of PID controller. Multi area system, have been considered for simulation of the proposed self tuning ANN based PID controller .The performance of the PID type controller with fixed gain, Conventional integral controller, and ANN based PID controller have been compared through MATLAB Simulation results carried out by 1% system disturbances both single area in multi area power system .Comparison of performance responses of integral controller & PID controller show that the neuralnetwork controller has quite satisfactory generalization capability, feasibility and reliability, as well as accuracy in both single and multi area system. The qualitative and quantitative comparison have been carried out for Integral, PID and ANN controllers. The superiority of the performance of ANN over integral and PID controller is highlighted.
1-Phenyl-2-[4-(trifluoromethyl)phenyl]-1H-benzimidazole
K. Jayamoorthy,T. Mohandas,P. Sakthivel,J. Jayabharathi
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813000834
Abstract: In the title molecule, C20H13F3N2, the benzimidazole unit is close to being planar [maximum deviation = 0.012 (1) ] and forms dihedral angles of 31.43 (7) and 61.45 (9)° with the 4-(trifluoromethyl)phenyl and 1-phenyl rings, respectively; the dihedral angle between these rings is 60.94 (10)°. In the crystal, C—H...F hydrogen bonds link the molecules into chains along the c-axis direction. The CF3 group is rotationally disordered with an occupancy ratio of 0.557 (8):0.443 (8) for the F atoms.
2-(4-Methoxyphenyl)-1-phenyl-1H-benzimidazole
T. Mohandas,K. Jayamoorthy,J. Jayabharathi,P. Sakthivel
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813001566
Abstract: In the title compound, C20H16N2O, the 1H-benzimidazole ring forms dihedral angles of 48.00 (6) and 64.48 (6)°, respectively with the benzene and phenyl rings, which are inclined to one another by 58.51 (7)°. In the crystal, weak C—H...π interactions are the only intermolecular interactions present.
2-(4-Fluorophenyl)-1-(4-methoxyphenyl)-1H-phenanthro[9,10-d]imidazole
T. Mohandas,R. Sathishkumar,P. Sakthivel,J. Jayabharathi
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813003504
Abstract: In the title compound, C28H19FN2O, the phenanthrene fused with an imidazole ring, constituting an essentially planar tetracyclic system [maximum deviation = 0.032 (2) ], makes dihedral angles of 60.83 (4) and 80.55 (4)° with the fluorobenzene and methoxybenzene rings, respectively. The dihedral angle between the the methoxybenzene and fluorobenzene rings is 69.45 (6)°. In the crystal, C—H...O hydrogen bonds connect the molecules into infinite strands along the b axis. The crystal structure is further consolidated by C—H...π interactions.
1-Phenyl-2-p-tolyl-1H-benzimidazole
T. Mohandas,K. Jayamoorthy,P. Sakthivel,J. Jayabharathi
Acta Crystallographica Section E , 2013, DOI: 10.1107/s160053681300264x
Abstract: In the title compound, C20H16N2, the benzimidazole ring system forms dihedral angles of 28.50 (7) and 72.44 (7)° with the tolyl and phenyl rings, respectively. In the crystal, molecules are linked into chains along the a-axis direction by weak C—H...N interactions. The crystal structure also features C—H...π interactions.
1-(3,5-Dimethylphenyl)-2-(4-fluorophenyl)-1H-phenanthro[9,10-d]imidazole
R. Sathishkumar,T. Mohandas,P. Sakthivel,J. Jayabharathi
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813003486
Abstract: In the title compound, C29H21FN2, the phenanthro tricyclic ring system is essentially planar with a maximum deviation of 0.030 (2) and makes dihedral angles between of 77.96 (6) and 37.18 (7)° with the dimethylphenyl and fluorophenyl rings, respectively. The crystal packing features weak C—H...π interactions involving the dimethylphenyl and other phenyl rings.
Soft Computing: Fuzzy Logic Approach in Wireless Sensors Networks  [PDF]
M. Vinoth Kumar, Dr. T. Lalitha
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.78108
Abstract: The recent growth of communication and sensor technology results in the enlargement of a new attractive and challenging area-wireless sensor networks (WSNs). A network comprising of several minute wireless sensor nodes which are organized in a dense manner is called as a Wireless Sensor Network (WSN). Every node estimates the state of its surroundings in this network. The estimated results are then converted into the signal form in order to determine the features related to this technique after the processing of the signals. It’s high computational environment with limited and controlled broadcast range, processing, as well as limited energy. The embedded soft computing approach in wireless sensor networks is suggested. This approach means a grouping of embedded fuzzy logic and neural networks models for information processing in complex environment with unsure, rough, fuzzy measuring data. It is generalization of soft computing concept for the embedded, distributed, adaptive systems.
Research Areas in Literature
Dr. S. T. Waghmode
Indian Streams Research Journal , 2012,
Abstract: Research is the most distinguished activity that enhances the quality of higher-education. A person obsessed with research has to face many problems. Apart from having an appropriate guide, the real problem begins with the selection of the research topic. The vast and gleaming research area is always changing its dimensions. Some well-set, readymade and stereotyped topics do not attract the attention of a competent researcher, because he or she is always looking for what is new and qualitative. Instead of accepting the topic given by the guide, the researcher must come up with his own topic and find out his own path. In this paper, an attempt has been made to suggest and focus some of the areas like fiction, poetry, drama and criticism. It covers literatures in English written in India, America and England in which some basic and applied research is possible.
THEME OF MIGRANCY IN THE WRITINGS OF INDIAN WRITERS.
Dr. T. N. Kolekar
Indian Streams Research Journal , 2012,
Abstract: This paper attempts to investigate the themes prevalent in the migrant of Indian writers.Every migrancy movement holds a historical significance, as it carries within itself the kernel of the nation's history. A migrant is filled with adventure and this is opening of new vistas for daily discourse.The Oxford Advanced Learner's Dictionary defines the term migration as “The movement of large number of people, birds or animals from one place to another”. Therefore a migrant is a person who moves from one place to another, especially in order to find work.
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