A Novel Transformer-less Switched Inductor Based Ultra Gain Converter for Renewable Energy Applications

Solar PV and other renewable energy systems are currently utilising high gain DC-DC converters. To be employed in a variety of these applications, a converter needs to have superior steady-state, dynamic, and efficiency performance. In order to do this, a Switched Inductor (SL) based ultra gain (UG) step-up DC-DC (SLUG) converter is suggested in this paper. The proposed (SLUG) converter has been designed to have an incredibly high voltage-gain while using lesser number of components. It operates over a wider duty cycle range and produces a greater gain at lower duty cycle values. The converter’s operation in Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) is discussed. Furthermore, this paper, covers the steady-state analysis and comparing aspects of the converter with existing contemporary literature. A 500W, 650V SLUG model is builted and tested in PSIM platform.