Design of a Flexible Three-Phase Inverter using Cascaded Boost SEPIC (CBS) Converter for Renewable Energy Application

To effectively utilize renewable energy, a converter system has been developed which will effectively connect the renewable sources with the grid. Here a converter system is designed to provide flexible three-phase AC voltage from irregulated DC input of renewable energy sources. The proposed circuit is designed by combining a cascaded boost SEPIC (CBS) converter with a three-phase inverter and an LCL filter. Gain adjustment is achieved by CBS converter; then the three-phase sinusoidal output voltage is achieved using a three-phase inverter along with an LCL filter. The energy from renewable sources like solar can be integrated efficiently to the grid using the proposed converter.

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