Intelligent Deployment Model for Target Coverage in Wireless Sensor Network

Target coverage and continuous connection are the major recital factors for Wireless Sensor Network(WSN).Several previous research works studied various algorithms for target coverage difficulties;however they lacked to focus on improving the network’s life time in terms of energy.This research work mainly focuses on target coverage and area coverage problem in a heterogeneous WSN with increased network lifetime.The dynamic behavior of the target nodes is unpredictable,because the target nodes may move at any time in any direction of the network.Thus,target coverage becomes a major problem in WSN and its applications.To solve the issue,this research work is motivated to design and develop an intelligent model named Distributed Flexible Wheel Chain(DFWC)model for efficient target coverage and area coverage in WSN applications.More number of target nodes is covered by minimum number of sensor nodes that can improve energy efficiency.To be specific,DFWC motivated at obtaining lesser connected target coverage,where every target is available in the monitoring area is covered by a smaller number of sensor nodes.The simulation results show that the proposed DFWC model outperforms the existing models with improved performance.

Design and Analysis of Novel Three-Phase PFC for IM Drives

Induction motor drives(IMDs)can achieve high performance levels comparable to dc motor drives.A major problem in getting high dynamic performance in an IMD is the coupling between theflux and torque producing components of stator current.This is successfully overcome in FOC(Field-Oriented Control)IM,making it to the industry standard control.The performance of an IMD with an improved power quality converter at the front end is presented in this study.In the IMD,boost converter is employed to reduce power quality difficulties at the utility interface.As the boost converter contains only one switch,it results in a low processing time and cost.To ensure sinusoidal supply currents with high PF(Power Factor)and minimal THD(Total Harmonic Distortion),a novel PFC(Power Factor Corrector)control technique is proposed.To enhance the performance of the converter and to lower distortions at the motor side,PI(Proportional Integral)controller is incorporated at the PFC side.Thus it controls the DC bus voltage.The proposed boost converter improves power quality by lowering overall harmonic distortion of AC mains current,improving power factor correction,and regulating dc-link voltage.It is designed,modelled,and simulated in the MATLAB/simulink platform.Using a DSP(Digital Signal Processor),the suggested system’s performance is experimentally validated.The system’s performance is evaluated for speed and load torque,and the power quality indices are determined to meet IEEE-519 standards under all operating conditions.From the obtained results,it is evident that the proposed system mitigates the power quality issues effectively.