TITLE:
Analysis and Design of Single Switch Hybrid Step-Up Converter
AUTHORS:
Ravivarman Shanmugasundaram, Jeyabharath Rajaiah, Veena Parasunath
KEYWORDS:
DC-DC Power Conversion, Switched-Inductor, Step-Up Converter, Voltage Multiplier
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.4,
April
19,
2016
ABSTRACT: A Single Switch Hybrid Step-up Converter with high voltage gain, which is suitable for renewable energy system, is proposed in this paper. The proposed converter consists of one switched diode-inductor cell and a capacitor. While switching, both are charged in parallel from the input source and discharged in series to the output. In order to obtain extra voltage gain at lower duty cycle, the voltage multiplier cell is integrated with the proposed converter. The main advantages of the converter are high voltage gain, reduced voltage stress, simple structure and low output voltage ripples. The operating principle and steady state theoretical analysis are presented. A 250 W prototype converter is implemented with 12 V input and 120 V output to verify the design and analysis of this converter and it has an efficiency of over 90% in all operations.