Pavel Y. Tabakov's research while affiliated with Durban University of Technology and other places

Publications (21)

Article
This work deploys a configured hypothetical 6-kWp capacity PV system, with mounted rooftop panels, to examine the performance of a PV system, corresponding to different (a) PV cell technologies; (b) ambient temperatures. The first (crystalline silicon (c-Si)) and second (copper indium gallium selenide (CIGS)) generations of PV cells have been chose...
Article
Full-text available
Background Technology is deployed to take the advantage of the ultimate energy from the sun (solar energy) to be used as heat or clean electricity. This energy is classified as “sustainable energy” or “renewable energy” because it requires a short period to naturally replenish the used energy. The application of solar energy involves the conversion...
Article
Full-text available
Sub Saharan Africa (SSA) and other parts of the Global South are richly endowed with renewable energy resources (RERs) that are grossly untapped. The integration of these resources, such as hydro, wind, solar, and biomass will facilitate the desired net zero-CO2-emissions economy. If these RERs are adequately harnessed, the perennial power supply c...
Article
Full-text available
The performance of a photovoltaic (PV) module can be improved by employing maximum power point tracking (MPPT) controllers. MPPT controllers are algorithms that are included in PV battery charge controllers or inverters to extract the maximum available power from PV modules for any given temperature and irradiance. Several studies report that the u...
Article
Full-text available
The potential of solar PV is location-dependent that needs to be assessed before installation. This study focuses on the assessment of a solar PV potential of a site on coordinates −29.853762°, 031.00634°, at Glenmore Crescent, Durban North, South Africa. In addition, it evaluates the performance of a 6-kWp installed capacity grid-connected rooftop...
Article
The study deals with the design and analyses of fundamental parameters based on optimization conditions of crossflow turbine (CFT) critical parts—the runner, nozzle, shaft, transmission belt, and pulley. The net head (Hn) and turbine power (Pt) for this study are 13 m and 56 kW, respectively, and these parameters serve as the fundamental inputs for...
Thesis
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Solar energy powered systems are increasingly being implemented in different areas due to the advances in solar energy technologies. Some of the major areas for solar energy applications include solar water heating, solar electric power generation, and solar water pumping. Solar water pumping has become the most adopted solar energy technology in t...
Preprint
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A rooftop solar photovoltaic (PV) system is an alternative electricity source that is increasingly being used for households. The potential of solar PV is location dependent that needs to be assessed before installation. This study focuses on the assessment of a solar PV potential of a site on coordinates − 29.853762°, 031.00634°, at Glenmore Cresc...
Article
Full-text available
Despite the merits of small hydropower (SHP), coupled with the perennial inadequate and unreliable electricity supply in SSA, the huge SHP potential in the region is hugely untapped. This is largely attributed to the lack of adequate technical components for the development of SHP turbines, which are: technical personnel, and production facilities...
Article
In this paper we model the dynamics of a spreading pandemic over a country using a new dynamical and decentralised differential model with the main objective of studying the effect of different policies of social isolation (social distancing) over the population to control the spread of the pandemic. A probabilistic infection process with time lags...
Article
Full-text available
Maximum Power Point Tracking (MPPT) controllers play an important role in improving the efficiency of Solar Photovoltaic (SPV) modules. These controllers achieve maximum power transfer from PV modules through impedance matching between the PV modules and the load connected. Several MPPT techniques have been proposed for searching the optimal matchi...
Article
The global outcry for a sustainable energy system—energy transition regime, involves the substitution of fossil fuels with clean and affordable energy and the amelioration of greenhouse gas (GHG) effects on global health and environment. Studies have shown that economic growth proportionally links energy consumption, as seen in developed countries....
Conference Paper
Full-text available
For maximum utilization of energy from a photovoltaic (PV) module, maximum power point tracking (MPPT) is essential. MPPT controllers force the solar panel to operate at the most efficient voltage thereby delivering maximum power to the load. In addition, MPPT controllers also enhance the operating lifetime of PV systems, especially batteries. From...
Article
Full-text available
This study overviews the status of the power supply; implications of the inadequate power supply; and the significance of hydropower in the socioeconomic wellbeing of Sub-Saharan Africa (SSA). This study noted that despite the large presence of energy potentials across the entire region, the power supply is grossly inadequate. Currently, the world’...
Article
Full-text available
The World Bank reported that approximately 55% of Nigeria's population have no access to the national electricity grid and most of these people live in the rural areas. The national grid capacity is hovering between 4500MW and 6000MW for a population of about 186 million. However, this is contrary to the enormous energy that abounds in Nigeria, bot...
Article
Full-text available
Adequate access to clean, reliable, quality and affordable power is crucial to both national and regional economic growth. The sub-Saharan Africa (SSA) power industry performance track records and statistics are dismal and appalling. The power supply is characterised by low accessibility, epileptic and poor transmission. The socioeconomic activitie...
Article
Full-text available
Adequate access to reliable, quality and affordable power is crucial to standard of living globally. Therefore, this study discusses the present power accessibility level, the causes of power inadequacy and measures required to realise power adequacy and sustainability in Sub-Saharan Africa. Based on secondary research information sources, this stu...
Article
Full-text available
The increased use of composite materials and structures in many engineering applications led to the need for a more accurate analysis and design optimization. While methods of stress-strain analysis developed faster, optimization techniques have been lagging behind. As a result, many designed structures do not fulfill their full potential. The pres...
Article
A methodology for stiffness improvement by optimal orientation of fibers placed using fiber steering techniques of composite plates has been developed and is described here. A genetic algorithm is employed to determine the optimal orientation of the tow fibers and, in addition, once the plate has been divided up into cells in order to apply the tec...
Conference Paper
Accurate optimal design solutions for most engineering structures present considerable difficulties due to the complexity and multi-modality of the functional design space. The situation is made even more complex when potential manufacturing tolerances must be accounted for in the optimizing process. The present study provides an in-depth analysis...

Citations

... MPPT controllers achieve maximum power transfer from the source to the load through impedance matching between the solar modules and the load connected [41]. They force PV modules to always operate at their maximum power point (MPP) for any given environmental and loading conditions. ...
... The performance of a PV system is affected by the performance and failure of the individual components. The performance of a PV system can be expressed in terms of performance ratio (PR), capacity factor (CF), energy production, and losses and degradation [24]. However, the performance of a PV system is largely determined by the strength and duration of sunlight; and these conditions are mainly responsible for the differences in power conversion efficiency (PCE) of systems with the same PV installed capacity and configuration at the five global climates [25,26]: temperate, cold, tropical, dry, and polar. ...
... 2) An adequate D 1 /b ratio has to be satisfied, similarly to Pelton turbines, where an adequate ratio of runner diameter to jet diameter has to be achieved. The ratio D 1 /b is recommended to range between H 0.85 21 and 6.25 (Ebhota and Tabakov, 2021), while it was suggested to be Khosrowpanah et al. (1988), with common values between 1 and 3 (Appendix 3 and Khosrowpanah et al., 1988). If the ratio D 1 /b is fixed, due to local constraints, the rotational speed can be estimated from Eqs. (8) and (17). ...
... In general, vaccination is an important control measure to reduce the size of infected populations. Many researchers have studied how to predict and evaluate the effectiveness of various vaccination strategies with a mathematical model [1,2,6,14,15,16,18]. We have to remark that, usually in such models the size of population is assumed to be constant. ...
... In the study, Adaptive Neuro-Fuzzy Interface System (ANFIS) was used to estimate the output power of the solar panel with 250Wp power. ANFIS is a data learning technique that aims to achieve desired results over input data by using multiple artificial neural networks [31], In this respect, it is used in many applications around the world [32]. In this context, the solar panel data of the past was applied to ANFIS, training was provided and the FIS file was produced. ...
... • Electric and autonomous freight vehicles: A number of technological advances in the freight transport sector have been made in the field of vehicle technology [82][83][84]. These advances are increasing the fuel efficiency of trucks and reducing emissions through emission filters. ...
... When the incremental conductance is not equal to the instantaneous conductance, the PV module's voltage is adjusted using a DC-DC converter in such a way that meets the condition of the MPP. This technique uses fixed step sizes for updating the operating voltage of the system, which is one of the drawbacks of using this method [38]. Thus, the selection of the step size is crucial for the efficiency of the algorithm. ...
... For impulse turbine, the water jet directed by the nozzle that hits the turbine blades will cause them to revolve [9][10][11]. The stationary nozzle on the other hand converts the water's potential energy (pressure) into kinetic energy [12][13][14]. This high-velocity stream's kinetic energy will then directly hit the blades. ...
... These fuels are undoubted, reliable economic drivers responsible for the big economies globally. However, they are associated with negative environmental (CO 2 emissions), and human health consequences, and are continuously depleted [6][7][8][9][10]; and therefore, not sustainable. This led to a global outcry for energy transition-a shift from fossil fuel to a sustainable energy system that is adequate, affordable, secure, and clean [10][11][12][13]. ...
... These fuels are undoubted, reliable economic drivers responsible for the big economies globally. However, they are associated with negative environmental (CO 2 emissions), and human health consequences, and are continuously depleted [6][7][8][9][10]; and therefore, not sustainable. This led to a global outcry for energy transition-a shift from fossil fuel to a sustainable energy system that is adequate, affordable, secure, and clean [10][11][12][13]. ...