Photovoltaic PV is eco-friendly source of energy. Due to increase in ecological pollution and decrease in usual means of power, the importance of non-conventional energy sources has grown up rapidly. The output of PV systems depend on atmospheric conditions like temperature and irradiance. Also efficiency of PV system is very much less which needs to be increased. Installation cost is another problem existed with photovoltaic modules. Different techniques are used to get high power. MPPT of PV system at any condition is necessary to transfer maximum available power. Therefore, to generate maximum power at output of PV, installation of MPPT is necessary. Using MPPT, high efficiency of PV is also ensured. Different algorithms are utilized to track down MPP of PV. Out of all algorithms used, two algorithms are discussed briefly over here i.e. Perturb & Observe (P&O) and Open Circuit Voltage algorithms for MPPT at different environmental conditions by changing irradiance and temperature. Variation in temperature and irradiance level results in different output of PV cell. By changing slight temperature and irradiance, voltage and current at the MPP changes. Results which are obtained as a result of changing external conditions are simulated in PSIM and LTSpice and are then compared with each other. Effect on MPP, maximum voltage and maximum current at MPP are observed by changing environmental and atmospheric conditions like irradiance level and temperature. After comparing both these algorithms. Two different software named PSIM and LTSpice IV are being used for implementation and modelling of PV cell and both algorithms.
Nasir Ishaq Farhan Altaf Zain Ul Abideen Afridi Naeem Arbab “Performance Analysis of Perturb & Observe and Open Circuit Voltage Algorithms for MPPT Tracking International Journal of Engineering Works Vol. 8 Issue 04 PP. 143-148 April 2021 https://doi.org/10.34259/ijew.21.804143148.
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