A High Gain Single Switch Modified SEPIC Converter

An improved high gain Single-Ended Primary-Inductor Converter structure for renewable energy applications is presented in this paper. During the design process, the conventional Single-Ended Primary-Inductor Converter is amalgamated with a boost circuit to get maximum voltage gain. The continuous input current of this converter avoids the need for large input filters for renewable energy applications. By modifying the duty cycle, this converter can be configured to operate over a wide voltage range. Several properties of this converter are achieved, including non-inverting output voltages and high gain voltages. Having only one switch makes control easy and reduces the need for control circuitry for this converter. Results of theoretical and simulation studies are presented in this paper.