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Recent submissions

Research Outputs (Electrical & Mining Engineering): Recent submissions

Now showing items 1-20 of 45

The Impact of the Electric Double-Layer Capacitor (EDLC) in Reducing Stress and Improving Battery Lifespan in a Hybrid Energy Storage System (HESS) System

Tshiani , Chrispin ; Umenne, Patrice (MDPI, 2022-11-18)

This paper investigates the effect of the electric double layer capacitor (EDLC) in reducing stress and prolonging the battery lifespan in a hybrid energy storage system (HESS). A 65 F, 16.2 V EDLC supercapacitor was ...
Synthesis of eco-friendly ZnO-based heterophotocatalysts with enhanced properties under visible light in the degradation of organic pollutants

Batchamen Mougnol, Jean B.; Waanders, Frans; Ntwampe, Seteno K. O.; Fosso-Kankeu, Elvis; Al Alili, Ali R. (2022-11-20)

Abstract Heterogeneous photocatalysts have been widely used for the removal of various organic pollutants from wastewater. The main challenge so far resides in the sustainability of the process, with regard ...
Modelling the IEC 61850 and DNP3 Protocol Using OPNET in an Electrical Substation Communication Network

Dion Njova; Kingsley Ogudo; Patrice Umenne (IEEE, 2022-08-23)

Communication protocols are a composite of supervisory control and data acquisition (SCADA) and they are used by the devices connected on the SCADA network. In this paper the distributed network protocol (DNP3) and ...
The Impact of Virtual Learning Environments on the Practical Skills of Open Distance Learning Students in Electrical Engineering

Sidwell Hlalele; Patrice Umenne (IEEE, 2022-08-23)

Open distance learning (ODL) education has been developing rapidly in South Africa. The main reason behind the growth is the demand for online studies created due to the corona pandemic. The ODL system involves study that ...
The Impact of Virtual Learning Environments on the Practical Skills of Open Distance Learning Students in Electrical Engineering

Sidwell Hlalele; Patrice Umenne (IEEE, 2022-08-23)

Open distance learning (ODL) education has been developing rapidly in South Africa. The main reason behind the growth is the demand for online studies created due to the corona pandemic. The ODL system involves study that ...
The Characterization of the Electric Double-Layer Capacitor (EDLC) Using Python/MATLAB/Simulink (PMS)-Hybrid Model

Chrispin Tumba Tshiani; Patrice Umenne (MDPI, 2022-07-18)

This paper investigates the characterization of an electric double-layer capacitor (EDLC). In this study, the 300 F and 400 F EDLC supercapacitors are connected in a circuit in a laboratory experiment to produce their ...
A machine learning based credit card fraud detection using the GA algorithm for feature selection

Ileberi, Emmanuel; Sun, Yanxia; Wang, Zenghui (2022-02-25)

The recent advances of e-commerce and e-payment systems have sparked an increase in financial fraud cases such as credit card fraud. It is therefore crucial to implement mechanisms that can detect the credit card fraud. ...
Fabrication of S-shaped micron-sized constrictions on FeC (steel) surface using femtosecond laser ablation with beam shaping

Umenne, Patrice (Springer, 2021-09-14)

In this paper, we demonstrate the fabrication of S-shaped micron-sized constrictions on steel (Fe3CII) surface using the femtosecond laser ablation technique. The femtosecond laser used has a wavelength of 775 nm, a power ...
Design of a Fingerprint Biometric Access Control System with GSM Functionality

Govender, Terene; Umenne, Patrice (IEEE, 2021-08-05)

We live in a world with ever-increasing digital technology, hence the need for enhanced security systems is vital. In the past a simple PIN or password would have been sufficient to maintain the integrity of security ...
Marine Aquarium Temperature Controller and the IoT (Internet of Things)

Jordaan, Gerrit; Umenne, Patrice (IEEE, 2021-08-05)

This system monitors and controls the temperature in a marine aquarium. This system measures the water temperature in an aquarium and then uses a heater and cooling fan to control the temperature within a range of 25-27°C. ...
Access control with automated on duty notification tool in air traffic services

Ntombela, Nkululeko; Umenne, Patrice (IEEE, 2020-08-04)

This project provides a solution that alerts management if an Air Traffic Service Unit (ATSU) tower is unmanned during operational hours. The project makes provision for an access control with an automated on duty notification ...
Micron sized constrictions fabricated using the femtosecond laser technique on YBCO thin films.

Umenne, Patrice (Springer, 2020-05-08)

In this paper, I report on the fabrication of micron-sized constrictions in YBCO thin films using the femtosecond laser technique. The constrictions are S-shaped superconducting weak links fabricated on YBCO thin films. ...
AFM analysis of micron and sub-micron sized bridges fabricated using the femtosecond laser on YBCO thin films.

Umenne, Patrice (MDPI micromachines, 2020-12-08)

The project arose as a result of the need to use the femtosecond laser to fabricate sub-micron and Nano-sized bridges that could be analyzed for the Josephson effect. The femtosecond laser has a low pulse duration of 130 ...
Design of a Smart Home System Using Bluetooth Protocol

Zondo, Sandile; Ogudo, Kingsley; Umenne, Patrice (IEEE, 2020-08-04)

Home automation is an intelligent, functional as a unit system that facilitates home processes without unnecessarily complicating the user’s life. Devices can be connected, which in turn connect and talk through a ...
Packet Analysis of DNP3 protocol over TCP/IP at an Electrical Substation Grid modelled in OPNET

Njova, Dion; Ogudo, Kingsley; Umenne, Patrice (IEEE, 2020-09-09)

In this paper Intelligent Electronic Devices (IED) that use ethernet for communicating with substation devices on the grid where modelled in OPNET. There is a need to test the communication protocol performance over the ...
Analysis of the IEC 61850 Protocol when used for communication during Maintenance Operations in an Electrical Substation Grid

njova, dion; ogudo, kingsley; Umenne, Patrice (ACM, 2020-09-13)

During Substation maintenance a bay is taken out of service, tested and during testing traffic is generated on the Substation Communication Network (SCN) in a power utility. A model of a Substation Communication Network ...
Evaluation of the effectiveness of Virtual laboratory’s for Electronics in the Open distance learning Context.

Umenne, Patrice; Hlalele, Sidwell (2020-08-04)

In this paper the module practical electronics offered at the University of south Africa in the Open distance learning context is discussed. The module was taught, and experiments were performed using a virtual laboratory ...
Design of a PV Based Power Supply with a NonInverting Buck-Boost Converter

Ogudo, Kingsley; Umenne, Patrice (IEEE, 2019-12-09)

This paper presents the design of a photovoltaic based power supply using a non-inverting buck-boost converter to charge batteries. The batteries can be used to power a load as back-up power when there is no sunlight. ...
Coal as a strategic resource in South Africa

Dikgwatlhe, Pule (Society of Mining Professors (SOMP) in collaboration with the Mining Engineering Education South Africa (MEESA) and The South African Institute of Mining and Metallurgy (SAIMM), 2018-03-13)

The higher price of oil and gas has positioned coal as the premium source of energy. This is likely to remain so as electricity demand is steadily rising. Listed as a strategic resource to the South African economy, coal ...
Emulating Software Defined Network Using Mininet and OpenDaylight Controller Hosted on Amazon Web Services Cloud Platform to Demonstrate a Realistic Programmable Network.

Lindinkosi L. Zulu; Kingsley Ogudo; Umenne, Patrice (IEEE Mauritius Subsection on IEEEexplore, 2018-12-07)

In this paper, a Software Defined Network was created in Mininet using python script. An external interface was added in the form of an OpenDaylight controller to enable communication with the network outside of Mininet. ...

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