Abstract
This paper reveals a seven-level inverter topology for photo-voltaic (PV) power generation system. The 7- level inverter created by cascading single phase full and half bridge inverter topology sustained with three separate PV strings. The output has 7-levels: +Vdc, +2/3Vdc, +Vdc/3, 0, −Vdc/3, −2Vdc/3, −Vdc. The 7-level inverter function is possible by using seven semi conductor switches. The designed inverter configuration has able to maintain consistent operation as inverter even though there is source and semiconductor switch breakdown. The developed inverter is differentiating with conventional multilevel inverters in terms of number of components, losses and reliability. The result of a 7-level inverter topology is confirmed by using MATLAB/SIMULINK software.
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