Department Of Electrical/Electronic Engineering Journals


U. Umar, M. J. E. Evbogbai, J. G. Bashayi, R. K. Soremekun, B. A. Omojola, (2016). Application of Battery Energy Storage System to Optimize Renewable Energy Resources to the Grid, International Journal Of Advancement In Engineering Technology, Management and Applied Science (IJAETMAS), 3 (10), pp. 52 – 67.

ABSTRACT

 Owing to the uncertain nature of energy from renewable sources like solar and wind, electric power generated from these sources are highly unreliable and may upset both the power quality and…
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M. J. E. Evbogbai , R. E. Okonigene, U. Umar, B. A. Kwembe, (2016). Renewable Energy Mix: Accelerative Measure For African OffGrid Communities Sustainable Development, International Journal of Innovative Research and Advanced Studies (IJIRAS), 3 (8), pp. 141 – 147.

Abstract:

 Autonomous diesel-based power system infrastructure in off-grid rural areas has a long time well-known history in many developing countries. However, successful operations of many of the standalone energy system have been obstructed by unexpected soaring price of the fuel…
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Anyasi, F.I, Obiazi, A.M.O,  Evbogbai, M.J.E, Akpaida, V.O.A, Onianwa, C.U, Ebegba, D, (2012). Information Technology in Engineering for Sustainable Development, IOSR Journal of Electronics and Communication Engineering (IOSR-JECE), 3 (3), pp.12 – 21.

Abstract:

Interest involves the review of information technology in engineering for sustainable development. This takes a look at the relevance of information technology in Engineering with reference to the several form of information exchange between two or more computers through any of the several methods of interconnections.…
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U. Umar, M.J.E. Evbogbai, R.E. Okonigene, B.A. Kwembe, J.G. Bashay, (2016). Energy Crisis Way-Forward: Diesel Generator-Micro Hydro-Solar Hybrid Power System of Off-Grid Power Station for Rural Development, The SIJ Transactions on Computer Science Engineering & its Applications (CSEA), 4 (3), pp. 29 – 36.

Abstract

There are several benefits for using renewable energy sources such as emission reduction, lowering of cost and technological gain. In many remote communities in the world, standalone power systems utilizing renewable sources of energy are…
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M.J.E. Evbogbai S.A. Akhadelor G.I. Ighalo F.I. Anyasi,  I.O. Aimuanwosa, (2007). Realization of a 3kVA, Single Phase, Electric ARC Welding Machine with Facilities for Charging Batteries, International Journal of Electrical and Power Engineering, 1 (5), pp. 537-542.

Abstract: This study present a 3kVA, single-phase alternating current, electric are welding machine and a battery charger in one unit. The device was designed, fabricating and tested using material and tools available locally in Nigeria. The work was…
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M.J.E. Evbogbai F.E. Ogieva,  A.O. Osahenvemwen, (2009). Voltage-Time Characteristic of a Solar Panel in Ambrose Alli University, Ekpoma Nigeria, International Journal of Electrical and Power Engineering, 3 (1), pp. 31-35.

Abstract

The voltage-time characteristics of a 140 W, 33 V solar panel is presented in this research. The readings and plots obtained shows that the terminal voltage of solar panel depends on time of the day. Between 7:30 am to 6:00 pm, the terminal voltage of…
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F.I. Anyasi A.K. Yesufu V.O.A. Akpaida M.J.E. Evbogbai, J.B. Erua, (2007). Indoor Modeling for Determination of G.S.M Signal Penetration Level: A Case Study of Mud, Block and Steel Building Materials in Ekpoma, Journal of Engineering and Applied Sciences, 2 (9), pp.  1443-1449.

Abstract

 Interest involves the determination of G.S.M signal strength in Mud, Block and Steel buildings in Ekpoma. Existing path loss exponent values were studied to determine the extent to which building characteristics…
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Omorodion I.I,  Obinabo C.E , Evbogbai M.J.E, (2016). Modeling, Design and Simulation of Active Suspension System Root Locus Controller using Automated Tuning Technique, Mathematical Theory and Modeling, 6 (1), pp. 52 – 56.

Abstract

 Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension system is to improve a ride quality by ensuring passenger’s comfort and good car road handling when the car is subjected to an input excitation. The dynamics of…
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Omorodion I.I, Obinabo C.E, Evbogbai M.J.E, (2016). Modeling, Design and Simulation of Active Suspension System PID Controller using Automated Tuning Technique, Network and Complex Systems, 6 (1), pp. 11 – 15.

Abstract

Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension system is to improve a ride quality by ensuring passenger’s comfort and good car road handling when the car is subjected to an input excitation. The dynamics of the suspension…
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Omorodion I.I, Obinabo C.E, Evbogbai M.J.E, (2016). On the Observability and Controllability of Active Suspension System, Journal of the Engineering Science and Application (JESA), 9 (1), pp. 18 – 24.

Abstract

 The focus of this paper is on the controllability and observability of an active suspension system used in automobile. The primary responsibility of control system Engineers is to design and implement controller. The active suspension system dynamics was captured by a mathematical model. The system transfer function model was…
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Omorodion I.I, Obinabo C.E, Evbogbai M.J.E, (2016). Optimal Frequency Response Controller Design of Active Suspension System Using Automated Turning Technique, Journal of Engineering Science and Application (JESA), 9 (1), pp. 69 – 75.

Abstract

Car suspension system is a mechanism that separates the car from the tire. The objective of the suspension system is to improve a ride quality by ensuring passenger’s comfort and good car road handling when the car is subjected to an input excitation. The dynamics of…
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Okonigene R.E, Ojieeabu C.E, John S.N, Evbogbai J.E, (2012). Developed Application for Voting using Biometric Data to Eliminate Election Irregularities, International Journal of Science and Advanced Technology, 2 (9), pp. 14 – 17.

Abstract

This work is part of an ongoing research work carried out to eliminate election irregularities in Nigeria. This developed application, which we tagged “VotingApp”, for the proposed work was simulated using web related applications.   VotingApp is secured application software for organizing voting and voters’ registration exercise.…
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Evbogbai M.J.E, (2011). Computation of Electrical Parameters of Zinc Oxide Varistors, Global Jour. Of Engg. & Tech., 4 (4), pp. 521 – 528.

Abstract

The application of Microsoft excel software in the computation of the electrical parameters of zinc oxide varistors developed using local available materials in Nigeria is presented in this work. The electrical parameters of interest were the clamping ratio, continuous operation voltage, nonlinear coefficients and capacitance. The result revealed that an optimum composition of 98 percent zinc…
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Abstract

Solar energy is one of the sustainable energy resources that can solve the world’s energy crises if properly harnessed. Solar panels convert directly the sun energy to electrical energy using the principles of photovoltaic effect. Power generated by solar panel depends on factors such as geographical location of the site, time of the year, time of the day and local weather conditions. Since solar panel operate over a wide range of voltage and current, then by increasing the…
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Evbogbai M.J.E, Aliu P..A, Yeboah J.K, Iyere S.F, (2011). Performance Analysis of Locally Made Electric Oven, Journal of Engineering Science and Applications (JESA), 7 (2), pp. 53 – 72.

Abstract

Electrical appliances are designed to operate at standard voltage and frequency. In this paper the effect of mains voltage variation on the performance of an electric oven developed using locally available materials in Nigeria is presented. The result revealed that an optimum performance was obtained at a rated voltage of…
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Abstract

Zinc oxide (ZnO) varistors are electronic device that are suitable for surge voltage protection for low, medium and high voltage applications. The raw materials for the production of varistors are widely available in Nigeria. Exploratory research and development has shown that varistors can be produced locally using available resources. The local production of the ZnO varistor in Nigeria will create job opportunity and conserve the scarce foreign exchange expended on the importation of ZnO varistors. The major challenges…
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Evbogbai M.J.E, Edeko F.O, Ajuwa C.I, (2011). Nonlinear Coefficients of Zinc Oxide Varistor, Global Jour. Of Engg. & Tech., 4 (1), pp. 41 – 44.

ABSTRACT
The nonlinear coefficients and other electrical properties, which support the use of ZnO varistor developed in Nigeria using locally materials, are presented in this work. The varistor was produced through conventional ceramic process at a sintering condition of 1260oC, 2hours. The thickness and diameter of the varistor were 1.32mm and 14.24mm respectively. The threshold…
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Abstract

Zinc oxide varistors were developed using locally available materials. The composition of the samples includes ZnO, 98; Bi2O3 and CoO 1% respectively. The compositions were mixed in a polyethylene container using zirconia balls. Cassava starch was a binder. The samples were passed using steel rings as moulds. The passed samples were sintered at 1260oC for 3 hours in an electric furnace. The samples were allowed to cool down to room temperature in the furnace. The electroded samples were…
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Evbogbai M.J.E, Jatto O.G, Ehaitamah J., (2011). Effect on Load Variation on 1.4kVA, 220V, 50Hz Inverter, International Journal of Engineering Science, 3 (1), pp. 121 – 124.

Abstract

The effect of load variation on 1.4kVA, 24/220volts, 50Hz, single phase inverter is presented in this work. The inverter is fed from a 120A-H, 24volts battery to produce a 220volts, 50 Hz to power alternating current loads. The no-load voltage as recorded to be 24volts. Eight, 200watts filament bulbs were used as…
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Evbogbai M.J.E, (2010). Solar Energy Conversion Efficiency in Nigeria, Global Jour. of Engg. & Tech., 3 (3), pp. 497 – 501.

Abstract

The solar energy conversion efficacy of a lOOwatts, 12 volts solar panel mounted In Ambrose Alii University, Ekpoma, Nigeria is presented. The conversion efficiency parameters of Interest were the maximum power point and the fill factors. These factors were evaluated using the short circuit current, open circuit voltage, current and voltage for various resistive loads which were measured…
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Evbogbai M.J.E, (2010). Comparative Analysis of Power Controller Schemes, Inter. Jour. of Engineering, 4(3), pp. 379 – 385.

ABSTRACT

The comparative analysis of the inverse parallel connected thyristor-thyristor and thyristors-diode power controller configurations are presented in this paper.

The controlled variations of the r.m.s value of the alternating voltage applied to a load via power controller scheme were examined. Analyses of the first fundamental component of the Fourier series of the load current were presented. The normalized value of the…
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Evbogbai M.J.E, (2008), The Impact of time on photovoltaic Power Generation in Nigeria, Global Jour. of Engg. & Tech., 1 (4), pp. 465 – 471.

Abstract

The effect of time on photovoltaic power generation in Nigeria is investigated in this work. From the study it is clear that the voltage generated depends on time of the day, time of the year, climatic conditions and the geographical location of the site.

The power generated is only available during the day between…
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Evbogbai M.J.E, Okonigene R.E, Akhadelor S.A, Utiome F.A, (2005). Reliability Analysis of Electric Power Supply in the Niger-Delta Region of Nigeria – Nepa Sapele Undertaking As A Case Study, African Journal Sci., 6(1), pp. 1196 - 1203

Abstract

The reliability of electrical power supply of NEPA in Sapele, for a period of seven years (January 1996 - December 2002) was investigated. The reliability parameters was accessed using both the quantitative and qualitative analysis. Enerhen - Agbarho 33kV feeder had the…
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ABSTRACT
The effect of load variation on 1.4kVA, 24/220volts, 50Hz, single phase inverter is presented in this work. The inverter is fed from a 120A-H, 24volts battery to produce a 220volts, 50 Hz to power alternating current loads. The no-load voltage was recorded to be 24volts. Eight, 200watts filament bulbs were used as loads in this experiment. The load was varied in step increment of 200watts by bulb addition. As the load increases, the load current and voltage and terminal…
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ABSTRACT
The possibility and economic implication of the commercialization of zinc oxide varistors developed using locally available materials in Nigeria is presented in this work. The study revealed that Nigeria has 4.63 metric tons reserve of Zinc which is the major constituents of zinc oxide varistors. The successful commercialization of these functional, protective semiconductor devices would create employment opportunity, income and wealth. The financial analysis revealed that the investment is a profitable venture with a profit ratio of…
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ABSTRACT
Varistors provides excellent protection of electric circuits and equipment against voltage surges which may have frequencies related or unrelated to the power system network. The effects of frequency variation on the electrical parameters of zinc oxide varistor developed in Nigeria using locally available materials are presented in this work. The electrical parameters of interest of the zinc oxide varistors examined were the voltage, current and capacitance. The result obtained revealed that an inverse relationship exist between capacitances and…
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ABSTRACT

The maximum power points of a 100watts, 17.5 volts, MBF:100 type solar panel mounted in Ambrose Alli University, Ekpoma, Nigeria for different hours of the day, under various resistive load conditions had been presented. The photovoltaic module exhibits a non-linear irradiance dependent voltage – current characteristics and the maximum power point varies with solar insolation. The maximum power point of 49.53watts occurs at 1.00pm when the sun is overhead. The result shows that the power generated varies…
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ABSTRACT

The successful development of a 1.5kW, 220Volts, 50Hz, single phase industrial electric oven using equipment and components available in our local electrical and electronic stores is presented in this work. This device would be suitable for de-moisturizing damped electrical equipment and components The Nickel-Alumel heat resistance element used in this work has a maximum temperature range of 400oC. This heating element was housed in the roof of the heating chamber having a volume of 91656cm3. The internal…
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ABSTRACT

The successful development of zinc oxide varistors using locally available materials in Nigeria is presented in this work. This functional semiconductor device protects circuit against voltage surges. The physical dimensions, electrical properties, capacitance, the effect of supply frequency variation on the capacitance of the locally fabricated ZnO varistors were examined and a comparison of these properties with the imported ones undertaken. The composition of the samples includes ZnO 97-100mol% and 0-3mol% additives (Bi2O3 and CoO). The compositions…
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ABSTRACT

The nonlinear properties of varistors, which are composed of ZnO-Bi2O3-based ceramics produced by conventional ceramic process using locally available materials in Nigeria, were investigated at various CoO contents. The increase of CoO improves the densification of ceramics and could withstand a drop impact test about 2m high. The highest nonlinearity was obtained from the varistor with 1.0 mol% CoO, with 70.8 in nonlinear exponent, varistor voltage of 125V and 2?A in leakage current. The further CoO addition…
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ABSTRACT

Zinc oxide varistors are functional ceramic based semiconductor devices with highly nonlinear current-voltage characteristics similar to back-to-back zener diodes. Its development and implementation in protecting electronic, electrical and power distribution and transmission circuits from the destructive voltage due to lightning and switching surges has been on for almost four decades. The raw materials for the mass production of these protective devices are available in Nigeria. This work is aimed at revealing some of the indigenous approaches adopted…
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ABSTRACT
This paper examines the controlled variation of the r.m.s value of the alternating voltage applied to a load through an inverse parallel thyristor pair. Analyses of the first fundamental component of the Fourier series of the load current from the laboratory test results are present. Other dependent variable such as distortion factor, displacement factor and
displacement angle were examined using a firing angle (?) or 300 for the thyristors. The thyristor used was TIC 106M, with current rating (IT(ava) Max). of…
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 ABSTRACT
Transformers are electromagnetic energy transformation devices which operate on the principles of electromagnetic induction. The devices transform alternating current voltage from one value to another at a constant frequency. This work reviews the development of these functional devices using locally available materials in Nigeria. The design stages, material selection, manufacturing techniques, performance parameters such as efficiency, voltage regulation and power factor were also discussed. Some applications of the locally developed transformers were presented. The possibilities of producing larger power transformers for electrical power…
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ABSTRACT

Solar panels convert sun energy directly to electric energy using the principle of photovoltaic effect. Exploratory research and development has shown that Nigeria has high solar energy potential with an average sunshine of about 10 hours per day throughout the year. This huge renewable energy resource can be converted to electric energy for the benefit of mankind. The major challenges facing the development and implementation of photovoltaic power generation includes, finance, non-availability of process equipment, lack of…
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