Modelling and Simulation of a Renewable Energy System for Remote Isolated Health Facilities in Uganda using Simulink
Keywords:Modelling; renewable energy, SIMLINK, health facilities, Uganda
Solar PV systems are now widespread across the globe. These systems generate electricity to fulfill the energy demands together with the existing resources as well as power including medical facilities situated in remote areas of Uganda where the main national electricity infrastructure has not been reached. In this paper, an off-grid PV system for rural medical facilities and the emergency situation has been simulated and modelled using the MATLAB Simulink toolbox. Because of the difference in temperature, solar irradiance, PV temperature, shading conditions, ambient temperature, wind speed, and dust, the electrical power generated by a photovoltaic (PV) module and hence the power sent to the load fluctuates, which rises the need to carry out analysis of the entire PV system to obtain peak and maximum power under these variable situations. In this paper, a complete off-grid PV module renewable energy generating system has been designed and simulated using MATLAB/Simulink and performance has been analyzed by subjecting the PV panels to various irradiances starting from 1 KW/m-2 for the Ugandan case. The simulation model consists of a solar PV array, and the battery system, the converter power stage with PWM control, and charge controlling functions and the performance of each block has been studied continuously. Finally, it has been found that this model is quite capable to simulate both the P-V and I-V characteristics of a PV module, and based on the result it has been forecast that the performance of several modules or even PV arrays connected in series and/or in parallel with the delivery of maximum power can be tested under diverse temperature and solar irradiances.
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