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This paper presents a technical and economic feasibility study for designing cost-effective and sustainable biomass-based energy generation system for a South African farm and neighbouring community in the Free State province. Biomass data collected from the farm is used to assess the energy potential of the available biomass and to design the energy generation scheme for the farm. Different system...
This paper gives an in-depth review of some of the commonly used power management strategies for inverter interfaced solar PV microgrids. Solar PV microgrids tend to produce unstable power due to the variation of solar irradiance. This means there is always a power difference between the generation and the load. This difference would have a negative impact on the power quality if it is not managed...
Currently, there has been a significant interest in deployment of renewable and low carbon energy sources in the form of microgrids for local energy generation. Microgrids operate in two modes — stand-alone and grid-connected. This poses a problem in microgrid protection settings in a sense that the fault current magnitude in a microgrid reduces drastically during its transition from grid-connected...
The paper reports on the technical, economic and environmental assessment of stand-alone and grid connected electricity generation from landfill gas in South Africa. Theoretical models are developed in Matlab to calculate the methane production potential of three Western Cape landfill sites in order to assess their suitability for landfill gas to energy (LFGTE) projects. Then Homer package is used...
With increased penetration of wind power into electrical grids, doubly-fed induction generators (DFIGs) are largely deployed as the electric generator for wind energy conversion systems (WECSs) to their robustness and easy controllability. In this paper, the authors report on the development of a model of a grid-connected DFIG-based WECS for studying its dynamic behaviour during grid disturbance....
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