Volume 8, Issue 2 (September)

Articles in this Issue

14 articles
1
Research Article DOI: 10.67203/zjeet.2019.y6a2caqq

DIPOLAR MAGNETIC FLUX LEAKAGES FOR PIPELINE RECTANGULAR DEFECT CHARACTERIZATION: ANALYTIC APPROACH

L. U. Daura*, A. Dan-Isa, S. A. Babale

Magnetic Flux Leakages (MFL) find its application in non-invasive of Non-Destructive Testing and Evaluation (NDT&E) to detect and characterizeddefect in pipelines made from ferromagnetic materials. Various improvementsof MFL models have been investigated for defect quantification but still couldnot achieve higher precision due to technical errors. We, therefore, proposemodels that minimize the err...

Sep, 2019 pp. 1-10 7 views 4 downloads
2
Research Article DOI: 10.67203/zjeet.2019.y9b82liu

TIME SERIES WIND SPED PREDICTION WITH ENERGY MAPPING USING HYBRID INTRINSIC MODE FUNCTION (IMF) AND EXTENDED INPUT NEURAL NETWORK (EINN)

S. M. Lawan*, W. A. W. Z. Abidin, T. Masri, F. A. Umari, A.Y. Abdullaahi, S. J. Kawu

Accurate and precise wind speed predictions are a prerequisite requirement that isnecessary before siting of wind turbines. The output power of wind energy system iscompletely depends on the behavior of wind speed; a small deviation of wind speed willlead to large energy losses. This paper presents a new technique for predicting the windspeed based on hybrid model Intrinsic Mode Function (IMF) and...

Sep, 2019 pp. 11-23 6 views
3
Research Article DOI: 10.67203/zjeet.2019.yxcgc9d1

MODIFIED NARX NETWORK FOR LOW VOLTAGE CONSUMER LOAD PREDICTION

Ayodele Isqeel ABDULLATEEF*, Momoh-jimoh Eyiomika SALAMI, Ismaila Bayo TIJANI, Mosud Taiwo AJALA

This paper is a continuation of our previous work on Nonlinear autoregressive witheXogenous input (NARX) for load prediction. Application of NARX network inreal-time might be difficult since the tapped delay was selected by trial and error,leading to nine hidden neurons which makes the network complex. This NARXnetwork was modified based on Genetic Algorithm (GA) and Differential Evolution(DE) res...

Sep, 2019 pp. 24-32 4 views
4
Research Article DOI: 10.67203/zjeet.2019.tnr99zms

ELECTRICITY GENERATION FROM NUCLEAR POWER: A PANACEA FOR MEETING THE SUSTAINABLE DEVELOPMENT GOALS

Abdullahi A. Mati*, B. G. Bajoga

The expansion of national electric power supply to meet the overall energy demand of acountry is indispensable for ensuring national growth and sustainable development. InNigeria, the NEEDS prescribed growth rate of 7% GDP that will ensure the attainment ofthe Sustainable Development Goals of poverty reduction to 50% of the 2000 value by 2015projected an electricity demand 45,055MW by 2030. In thi...

Sep, 2019 pp. 33-37 6 views
5
Research Article DOI: 10.67203/zjeet.2019.wd9dds7y

MODULAR MULTILEVEL CONVERTER WITH STATEFEEDBACK CONTROLLER FOR HARMONICS SUPPRESSION

A.U. Lawan*, A.Abdulkarim, G.S. Shehu, A. Kunya, I.S Madugu

Control of submodule capacitor voltages and the circulating current within modularmultilevel converter (MMC) is essential to MMC performance. The circulating current hasan influence on the losses, rating of the power devices and voltage ripple. The circulatingcurrent tends to have csurrent harmonics due to the voltage disturbance on the submodulecapacitor voltages. To decrease the influence of the...

Sep, 2019 pp. 38-49 5 views
6
Research Article DOI: 10.67203/zjeet.2019.y7fenwes

FREE SET POINT TRACKING AND DISTURBANCE REJECTION OF BINARY DISTILLATION COLUMN USING MODEL PREDICTIVE CONTROL

A. T. Salawudeen*, Z. Haruna, B. Yahaya, I. F. Egbujo, U. R. Bello, A. Y. Zubairu, I. Nwokocha, I. Hamisu

Off set free set point tracking is a challenging problem in distillation column control. This isusually due to the multivariable nature of the distillation column and hence the interactionbetween the loops. This study designed a model predictive controller using MATLAB andSimulink for a Lubyen Vinate Distillation Column. The results show that the model predictivecontroller performs an off set free...

Sep, 2019 pp. 50-55 4 views
7
Research Article DOI: 10.67203/zjeet.2019.ettzutmh

APPLICATION OF PARTICLE SWARM OPTIMIZATION AND SIMULATED ANNEALING TECHNIQUES FOR OPTIMAL LOCATION AND SIZING OF DISTRIBUTED GENERATORS

S. M. Lawan*, W. A. W. Z. Abidin, T. Masri, S. J. Kawu

Distributed Generators (DGs) are generators that produce electrical power from quite a fewmodest energy resources. Some could be referred to as on-site generation, dispersedgeneration, embedded generation, decentralized generation or distributed energy. TheseDGs are located in metropolitan locations if you want to minimize the losses in transmittingthe energy. In order to identify the size of the ...

Sep, 2019 pp. 56-66 5 views
8
Research Article DOI: 10.67203/zjeet.2019.qes7j7nt

COMPUTATIONAL COMPLEXITY ANALYSES OF ADAPTIVE EQUALIZATION ALGORITHMS IN LINEARLY DISPERSED CHANNEL SYSTEMS

O.E. Ochia*, E. Obi

This paper presents a framework for assessing the complexity of adaptive equalizationalgorithms in a linearly dispersive channel that produces unknown distortion. Threealgorithms are investigated including the Least Mean Squares (LMS), Recursive LeastSquares (RLS), and Recursive Least Squares Lattice (RLSL) algorithms with respect to themean square error (MSE) and the sample convergence speed. The...

Sep, 2019 pp. 67-73 4 views
9
Research Article DOI: 10.67203/zjeet.2019.00meni9c

MULTIPLE MONTE CARLO SIMULATED HIDDEN MARKOV MODEL FOR FUZZY TIME SERIES FORECASTING

A. T. Salawudeen*, A. Nurudeen, S. Garba, S. U. Hussein, M. L. Imam, I. F. Egbujo, B. Yahaya

This paper presents a Monte Carlo based Hidden Markov Model (HMM) for fuzzy timeseries forecasting. To make the nature of conjecture and randomness of forecasting morerealistic, the Monte Carlo method with different simulation size is adopted to estimate theforecasting outcome. To address the insufficiency in data associated with the HMM model,we adopted a method called smoothing. A number of simu...

Sep, 2019 pp. 74-86 4 views 1 downloads
10
Research Article DOI: 10.67203/zjeet.2019.q5dvi0u0

SURF-FAST BASED PARTICLE FILTER TRACKING OF ARAPAIMA GIGAS

F. S. Bala*, A. A. Shafie, U. U. Bello

Invasive Alien Species (IAS) of fish has recently become issue of concern, due to their adverse ecological effect, as well as potential risk and danger to humans. Method of containment mostly employed to invasive fish without harming indigenous fish species would involve direct human effort. The involvement of humans in physical and direct containment of invasive fish species can be very tedious, ...

Sep, 2019 pp. 87-95 5 views
11
Research Article DOI: 10.67203/zjeet.2019.bpk45vih

MODULAR MULTILEVEL CONVERTER WITH HARMONICS COMPENSATION FOR STATE-FEEDBACK CONTROLLER

A.U. Lawan*, A.Abdulkarim, I.S Madugu, A. B. Kunya, G.S. Shehu

The voltage variations among the sub-module (SM) capacitors result in harmonicssuperimposed unto the circulating current. The conventional control of the SM voltages usesa closed-loop proportional Integral (PI) controller based on carrier shifted pulse widthmodulation (CSPWM). The PI-controller provides a dc reference circulating current for thecontrol of the modular multilevel converter (MMC) mea...

Sep, 2019 pp. 96-104 4 views
12
Research Article DOI: 10.67203/zjeet.2019.otejnm1d

DEVELOPMENT OF AN EFFICIENT WIRELESS POWER TRANSFER AND CHARGING SYSTEM (500MHZ – 900MHZ)

Abdoulie M. S. Tekanyi*, Emmanuel Chinda Francis, Aminu Muhammad Abba

Strong coupled magnetic resonance Wireless Power Transfer (WPT) proposed byresearchers at Qi IEEE conf. in 2007 attracted the world’s attention by virtue of itsmid-range, non- radioactive, and high-efficiency power transfer. In this article,current developments and research progress in the technology of WPT arepresented. Advantage of WPT are analysed by comparing it with other WPTtechnologies and ...

Sep, 2019 pp. 105-111 4 views
13
Research Article DOI: 10.67203/zjeet.2019.4ajoj4zq

IMPACT OF NUMBER OF CHANNELS ON THE CAPACITY OF SINGLE AND MULTI-CHANNEL WIRELESS NETWORKS

S. A. Babale*, D. D. Dajab, S. H. Lawan, L. U. Daura, S. G. Mohammed

Radio Frequency (RF) suffers lot of impairments and perturbations resulting in counterssuch as call drops rate, failure rate and congestion rate on one hand and beam-width, fading,shadowing and attenuation on the other hand. These factors seriously affect systemscapacity. To combat the effect of these impairments on the signal, the information can betransmitted via multiple channels by deploying m...

Sep, 2019 pp. 112-118 5 views
14
Research Article DOI: 10.67203/zjeet.2019.w5qvpc0i

A CONCEPTUAL FRAMEWORK FOR PRACTICAL IMPLEMENTATION OF LI-FI FOR V2V VANET COMMUNICATION

H. Bello-Salau*, A. J. Onumanyi, B. Yahaya, A. M. Aibinu, Z. Attah, M. O. Momoh

The emergence of light fidelity (Li-Fi) has revolutionized the way information are sent froma source to destination. Despite the expensiveness of Li-Fi, it still found application in mosttime critical information transmission between a source and destination due to its fastness.Consequently, this paper presents a Li-Fi mimic approach for communicating sensed roadanomalies among vehicles in a Vehic...

Sep, 2019 pp. 119-125 5 views
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