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Performance Analysis of Transformer-Less Two Phase Interleaved High Gain DC Converter using MPPT Algorithm
Objectives: The performance of parallel input and series output configured interleaved high gain DC converter using MPPT algorithm is analyzed. Methods: The output power of PV varies due to change in temperature and irradiation levels. This reduces the conversion efficiency. Hence, Perturb and Observe (P&O) algorithm is used to achieve maximum power from PV panel with suitable duty ratio and also improves efficiency. The simulations are carried out using MATLAB/SIMULINK to validate the operation and effectiveness of the converter using MPPT algorithm. Results: The transformer-less two phase interleaved converter not only produces high output voltage but also reduces voltage stress of active switches. The simulation results for the converter using P&O algorithm is presented in this paper. The various parameters such as output current, output voltage and output power of the transformer-less two phase interleaved DC converter were compared with and without MPPT. Conclusion and Application: The converter with MPPT produces an output of 248.2 W which is 1.1 times that of converter without MPPT. Thus, the two phase’s interleaved DC converter with MPPT shows better performance and can be used for standalone applications.
Keywords
High Step-Up Voltage Gain Converter, MPPT Algorithm, Photovoltaic, Transformerless
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