Kishore, Pinjala Mohana and Sabnaveesu, Akhila and Bhimasingu, Ravikumar
(2020)
High Gain Switched Inductor Split Source Inverter for Solar Energy Applications.
In: PIICON 2020 - 9th IEEE Power India International Conference, 28 February 2020 - 1 March 2020.
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Abstract
In general, the electrical energy is transmitted from solar panel to the grid through a boost converter along with inverter. In recent times, single state converters (like Z-source inverters and split source inverters (SSI)) are being used for grid-connected solar systems for improving the conversion efficiency and voltage gain. Among the single stage converters, SSI has addition merits like lower device count, lower switch voltage stress, which is most suitable for solar applications. However, the solar system requires a higher voltage gain converter because of its low output voltage ratings. In this regard, voltage gain of conventional SSI is enhanced using switched inductor structures and it has presented in this paper for solar energy applications. This proposed single phase high gain switched inductor split source inverter (SISSI) has a higher voltage gain compared to the other conventional topologies. And also, SISSI has a reduced passive component count, lesser inductor size, capacitor size and improved efficiency than conventional topologies. The proposed SISSI has been implemented using MATLAB/Simulink for solar applications. And, the analysis is carried out for different irradiation changes. Also, the 100W prototype of SISSI was developed by using a DSP control board, IGBT switches. And, the proposed SISSI topology compared with existing ZSI, qZSI and SSI topologies in different aspects like voltage gain, passive component size, number of components and efficiency.
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