A Review on Different Topologies and Control Method of Static Synchronous Compensator

Rapidly acting static synchronous compensator STATCOM , a member of FACTS devices, is a capable technology being widely used as the state-of-the-art dynamic shunt compensator for reactive power control in transmission and distribution system. In the last 25 years, technocrats have made extensive research on STATCOM technology due to which, many STATCOM controllers based on the self-commutating solid-state voltage-source converter VSC have been developed and commercially put in operation to control system dynamics under stressed conditions. 

Because of its many attributes, STATCOM has emerged as a qualitatively superior controller relative to the line commutating static VAR compensator SVC . This controller is called with different terminologies as Static Compensator advanced static VAR compensator, advanced static VAR generator or static VAR generator, Static Condenser, synchronous solid-state VAR compensator, VSC-based SVC or self-commutated SVC or static synchronous compensator SSC or S2C . The development of STATCOM controller employing various solid-state converter topologies, magnetic configurations, control algorithms, switching techniques and so on, has been well reported in literature with its versatile applications in power system. A review on the state-of-the-art STATCOM technology and further research potential are presented. 

By Arjun Singh "A Review on Different Topologies and Control Method of Static Synchronous Compensator"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18729.pdf

Direct Link: http://www.ijtsrd.com/engineering/electrical-engineering/18729/a-review-on-different-topologies-and-control-method-of-static-synchronous-compensator/arjun-singh

manuscript publication, submit paper online, indexed journal

Investigation on Friction Stirs Welding of Aluminum Alloy and Copper Dissimilar Metals

The joining of dissimilar Aluminium Alloy and Copper aluminium plates of 5mm thickness was carried out by friction stir welding FSW technique. Optimum process parameters were obtained for joints using statistical approach. Five different tool designs have been employed to analyse the influence of rotation speed and traverse speed over the micro structural and tensile properties. In FSW technique, the process of welding of the base material, well below its melting temperature, has opened up new trends in producing efficient dissimilar joints. Effect of welding speed on microstructures, hardness distribution and tensile properties of the welded joints were investigated. 

By varying the process parameters, defect free and high efficiency welded joints were produced. The ratio between tool shoulder diameter and pin diameter is the most dominant factor. From micro structural analysis it is evident that the material placed on the advancing side dominates the nugget region. The hardness in the HAZ of 6061 was found to be minimum, where the welded joints failed during the tensile studies. 

By J. Eswara Kumar | J. Sree Hari | L. Anwesh Kumar "Investigation on Friction Stirs Welding of Aluminum Alloy and Copper Dissimilar Metals"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18602.pdf

Direct Link: http://www.ijtsrd.com/engineering/mechanical-engineering/18602/investigation-on-friction-stirs-welding-of-aluminum-alloy-and-copper-dissimilar-metals/j-eswara-kumar

high impact factor, ugc approved journals for engineering, special issue publication

CFD Analysis of Solar Air Heater Provided with Discrete Inclined Rib Roughness on the Absorber Plate A Review

Heat transfer enhancement is a subject of considerable interest to researchers as it leads to saving in energy and cost. Because of the rapid increase in energy demand in all over The world, both reducing energy lost related with ineffective use and enhancement of energy in the meaning of heat have become an increasingly significance task for design and operation engineers for many system. A 3-dimensional CFD analysis has been carried out to study heat transfer and fluid flow behavior in a rectangular duct of a solar air heater with one roughened wall having discrete inclined rib roughness.

The effect of Reynolds number, roughness height, roughness pitch, relative roughness pitch and relative roughness height on the heat transfer coefficient and friction factor have been studied. In order to validate the present numerical model, results have been compared with available experimental results under similar flow conditions.

Ajay Jain | H. S. Sahu "CFD Analysis of Solar Air Heater Provided with Discrete Inclined Rib Roughness on the Absorber Plate: A Review"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18686.pdf

Direct Link: http://www.ijtsrd.com/engineering/mechanical-engineering/18686/cfd-analysis-of-solar-air-heater-provided-with-discrete-inclined-rib-roughness-on-the-absorber-plate-a-review/ajay-jain

international peer reviewed journal, paper publication for engineering, conference issue publication

Comparative Study on the Properties of Cement Stabilized Lateritic Bricks Sourced from Different Locations

There is need for tested and proven alternative source of alternative walling materials in third world countries such as Nigeria. This will foster massive provision of houses for the populace. The aim of this research is to compare the properties of cement stabilized lateritic bricks sourced from different locations. Soil samples were taken from three locations within the study area to laboratory for Abrasion, Impact, Compressive strength and Water absorption tests. 

Results showed that the stabilized lateritic bricks A, B and C have water absorption values varied from 17 to 23 , 32 to 36 and 38 to 42 respectively for 7 - 28 days at 1 cement content. For 2 cement content, water absorption values varied from 15 to 20 , 24 to 28 and 32 to 36 for lateritic bricks A, B and C respectively. While sandcrete block has water absorption values varied from 9 to 13 for 7 - 28 days respectively. It is also observed that stabilized lateritic bricks A, B and C have compressive strength values varied from 1.33 to 1.71N mm2, 0.32 to 0.42 N mm2 and 0.21 to 0.29N mm2 respectively for 7 - 28 days at 1 cement content. 

For 2 cement content, compressive strength values varied from 1.52 to 2.09 N mm2, 0. 40 to 0.63N mm2 and 0.29 to 0.35 N mm2 at 7 - 28 days for lateritic bricks A, B and C respectively. While sandcrete block has compressive strength values varied from 0.54 to 0.74 N mm2 for 7 to 28 days respectively. The higher the cement content, the lower the absorption rate and the higher the compressive strength. The compressive strength also increases with age. Lateritic brick is more cheaper than sandcrete block for construction of building because it require little cement content. Further study should be conducted for another source of stabilizer. 

By Adeyemi E. Adetoro | Bamidele I. Faluyi "Comparative Study on the Properties of Cement Stabilized Lateritic Bricks Sourced from Different Locations"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18590.pdf

Direct Link: http://www.ijtsrd.com/engineering/civil-engineering/18590/comparative-study-on-the-properties-of-cement-stabilized-lateritic-bricks-sourced-from-different-locations/adeyemi-e-adetoro

peer reviewed journals, manuscript submission, call for paper engineering

Assessment of some Chemical Properties of Isan - Ekiti Soil, Southwestern Nigeria

Increase in knowledge of Chemical properties of soil will prevent or reduce road failure in tropical climate such as Nigeria. This study aimed at assessing some chemical properties of lateritic soil deposited in Isan - Ekiti, South-western Nigeria. Soil samples collected from the study area were subjected to CEC, Organic Carbon content, pH and Refractive Index tests. The CEC, Organic Carbon content, pH and Refractive Indices values for all the soil samples varied from 35.00 to 58.00 , 31.00 to 46.00 , 6.00 to 6.21 and 1.529 to 1.533 respectively. 

It could be generally observed there were presence of large deposit of lateritic soil with large contents of clay and its minerals. The soil in the study area were acidic in nature though weak and likely to have high retention capacity. There could be presence of clay minerals such as Allophone, Chlorite, Illite and Steatite in study area's soil. Further study on the other Engineering properties of the soil should be carried out. 

By Silas A. Oladapo | Adeyemi E. Adetoro "Assessment of some Chemical Properties of Isan - Ekiti Soil, Southwestern Nigeria"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18571.pdf

Direct Link: http://www.ijtsrd.com/engineering/civil-engineering/18571/assessment-of-some-chemical-properties-of-isan---ekiti-soil-southwestern-nigeria/silas-a-oladapo

multidisciplinary journal, submit paper online, indexed journal

Analyses of some Engineering Properties of Isan - Ekiti Soil, Southwestern Nigeria

Today, all over the World, soil plays major role in Civil Engineering works or construction. Its thorough assessment is impossible if its Engineering properties were overlooked. The aim of this study is to analyze some Engineering properties of lateritic soil deposited in Isan - Ekiti, South-western Nigeria. Soil samples collected from the study area were subjected to Atterberg Limits, CBR and Grain Size laboratory tests. 

It is observed that the LL, PL, PI, SL and CBR values varied from varied from 41.10 to 57.50 , 24.60 to 35.50 , 14.80 to 22.70 , 0.32 to 0.61 and 4.38 to 30.21 respectively for all the soil samples. It could be generally observed all the soil samples were classified as granular soil material with mainly silty or clayey gravel and sand constituent materials with some stone fragments. 

Their general rating as sub-grade materials is "Excellent to good". They were grouply classified as A - 2 - 7 and were only good for sub grade filling materials. There is need for further study on deposited materials around the study area for good base and sub base courses materials. 

By Adeyemi E. Adetoro | Silas A. Oladapo "Analyses of some Engineering Properties of Isan - Ekiti Soil, Southwestern Nigeria"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18570.pdf

Direct Link: http://www.ijtsrd.com/engineering/civil-engineering/18570/analyses-of-some-engineering-properties-of-isan---ekiti-soil-southwestern-nigeria/adeyemi-e-adetoro

research publication, ugc approved journals for engineering, special issue publication

Analyses of some Geotechnical Indices of the Federal Polytechnic, Ado-Ekiti Lateritic Soil used for Bricks

The need to overcome housing problems for the populace in a Third world country like Nigeria through the use of cheap and available construction materials is the ulterior motive of this study. It sought to analyze some geotechnical indices of the lateritic soils to be used for the production of the alternative material e.b. Bricks . Soil samples were taken from three locations within the study area to laboratory for Atterberg Limits and Particle Size Distribution tests. 

Results showed that the Liquid Limit LL , Plasticity Index PI and Plastic Limit PL values varied from 37.80 to 46.00 , 15.00 to 20.30 and 17.50 to 28.00 respectively for all the soil samples. Their clay, sand and gravel also ranged from 36.4 to 56 , 33.2 - 51.6 and 5.6 - 10.4 respectively. 

The soil samples were generally as silt - clay and grouply classified A - 6 A - 7 materials with mainly clayey constituent materials. All the soil samples would be good for brick making due to large quantities of clay and sand with very little gravel. There is need for further study on other geotechnical indices of those soils in order to further ascertain their suitability. 

By Bamidele I. Faluyi | Adeyemi E. Adetoro "Analyses of some Geotechnical Indices of the Federal Polytechnic, Ado-Ekiti Lateritic Soil used for Bricks"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18582.pdf

Direct Link: http://www.ijtsrd.com/engineering/civil-engineering/18582/analyses-of-some-geotechnical-indices-of-the-federal-polytechnic-ado-ekiti-lateritic-soil-used-for-bricks/bamidele-i-faluyi

peer reviewed journal, manuscript submission, call for paper engineering