ARCHIVES(Journal of Harmonized Research in Engineering)


Title: A REVIEW ON DIFFERENT DESIGNS OF SOLAR STILLS
Author: Harimohan Soni and Rajiv Varshney
Keyword: Stepped solar still, inclined type solar still, flat basin with reflectors, desalination
Page No: 88-93
Abstract: The radiation continuously emitted by the sun is the inexhaustible source of energy which is the root of almost all forms of energy renewable as well as non- renewable; the only exceptions being geot hermal energy and nuclear energy. The use of solar energy for desalinating seawater and brackish well water has been demonstrated in several moderate-sized pilot plants worldwide. Most important features of solar still which affect the performance of solar still are basin area, slope of glass cover and depth of water. Many researchers and developers introduced internal reflectors, stepped solar still, varying the shape of glass cover, increasing the slope of glass cover, internal and external reflectors to increase the productivity of solar still. In this review, an attempt has been made to study the present status of different designs used to improve the productivity of conventional solar stills. Keywords: Stepped solar still, inclined type solar still, flat basin with reflectors, desalination Download PDF


Title: A COMPREHENSIVE REVIEW OF PHASOR MEASUREMENT UNITS FOR WIDE AREA MEASUREMENT SYSTEMS
Author: Priyank Tiwari, Prabodh Khampariya
Keyword: Inter-area oscillations, power system stabilizer (PSS), Phasor Measurement Unit (PMU), Wide Area Measurement Systems (WAMS)
Page No: 94-101
Abstract: Power system operation has become increasingly complex due to high load growth and increasing market pressure. The occurrence of major blackouts in many power systems around th e world has necessitated the use of synchrophasor based Wide Area Measurement Systems (WAMS) for grid monitoring. Synchrophasor technology is comparatively new in the area of power systems. Phasor measurement units (PMUs) and phasor data concentrators (PDCs) are new to the substations and control centers. Even though PMUs have been installed in many power grids, the number of installed PMUs is still low with respect to the number of buses or lines. Currently, WAMS systems face many challenges. The amount of data collected by PMUs is large and they need to be transferred to regional and global data centers where real-time state estimation, and protection, stabilization decisions are made out of two different signal selection method. Key Words: Inter-area oscillations, power system stabilizer (PSS), Phasor Measurement Unit (PMU), Wide Area Measurement Systems (WAMS) Download PDF


Title: CONGESTION CONTROL IN MULTI-FLOW ENVIRONMENT USING MULTIPATH ROUTING BASE IN MANET
Author: Raju Sujane, Prof. Sumit Sharma
Keyword: Congestion Multipath routing, Dynamic queue, Link expiration time, load balancing.
Page No: 102-110
Abstract: The multipath route institution uses the method that discovers multiple multi hops communication between source and destination. Multi-path routing will balance the load higher than the only path rou ting in ad hoc networks, thereby reducing the congestion by dividing the traffic in many ways. This analysis presents a new approach of Multipath Load leveling with AOMDV routing protocol and Dynamic Queue based mostly congestion management mechanism for avoiding congestion in network communication flows. During this theme the shop and forwarding capability of nodes are increased by varied the queue length according to incoming information. The AOMDV protocol performance is additionally increased to increment the link expiration time when failure this affiliation establishment in network. The new affiliation is established consistent with the new link expiration note value, by that the likelihood of link failure in AOMDV is additionally minimizes. It suggests that the multipath routing performance during this technique has will increase the link expiration time with spirited queue length technique. The multipath routing has little doubt better than the Unipart routing and balance the load by proving the alternative path if the already established path are congested. However the performance of AOMDV is improves after adding the proposed scheme. The performance of traditional AOMDV is measured on the basis of load handling capability of nodes in network and thru performance matrices. The simulation of each the routing techniques is finished in ns-2 simulator. Keywords: Congestion Multipath routing, Dynamic queue, Link expiration time, load balancing. Download PDF


Title: SURVEY OF QUALITY OF SERVICES TO IMPROVE PERFORMANCE OF ROUTING IN MANET
Author: Raju Sujane, Prof. Sumit Sharma
Keyword: MANET, routing, QoS, challenges.
Page No: 111-120
Abstract: Ad hoc Networks (MANETs) make them highly desirable for the present day multimedia communications. Traditional routing protocols may not suffice for real time communications it depends upon the condi tions and our requirements. Though there has been considerable research in this area. MANETs are being used in numerous application domains from emergency rescue and relief to networks. To support real-time communications (such as audio and video) over MANETs, new Quality of Service (QoS) provisioning mechanisms need to be developed. There are many challenges in QoS provisioning for MANETs such as dynamically changing topology, wireless capacity limitations, heterogeneous network environment, limited battery power etc. Previous QoS surveys in MANET have only looked at QoS provisioning models, signaling and routing. This paper presents a complete survey of the challenges and current state of the art of MANET QoS Routing. We include a thorough overview of QoS routing metrics, resources, and factors affecting performance and classify the protocols found in the respective topics. Keywords: MANET, routing, QoS, challenges. . Download PDF


Title: STATOR INTERTURN SHORT CIRCUIT FAULT DIAGNOSIS BY CURRENT CONCORDIA PATTERN USING FUZZY FOR DECISION EVALUATION
Author: Pramod S. Jadhav, Alka Thakur
Keyword: Concordia pattern, fault diagnosis of induction motor, fuzzy logic, wavelet.
Page No: 121-125
Abstract: An early detection and diagnosis of induction motor stator short circuit inter turn fault prevents greater damage to nearby coils, core, and insulation and eventually to the motor. The presence of st ator inter turn short circuit fault can be detected by analysis of parks transformed stator current Concordia patterns. Further in this paper to increase accuracy and extract features, wavelet transformation is used and for decision making fuzzy system is been trained. The proposed fuzzy approach is dependent on detailed level coefficient Concordia pattern, obtained from wavelet transformation. Experimental results integrate the aim of paper. Keywords: Concordia pattern, fault diagnosis of induction motor, fuzzy logic, wavelet. Download PDF