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Priyadarshi, Anurag,Kar, Pratik Kumar,Karanki, Srinivas Bhaskar The Korean Institute of Power Electronics 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.3
This paper presents a switched capacitor (SC) based bidirectional dc-dc converter topology for high voltage gain applications. The proposed converter is able to operate with multiple integral voltage conversion ratios based on user input. The architecture of a user-friendly, inductor-less multi-voltage-gain bidirectional dc-dc converter is proposed in this study. The inductor-less or magnetic-less design of the proposed converter makes it effective in higher temperature applications. Furthermore, the proposed converter has a reduced component count and lower voltage stress across its switches and capacitors when compared to existing SC converters. An output impedance analysis of the proposed converter is presented and compared with popular existing SC converters. The proposed converter is simulated in the OrCAD PSpice environment and the obtained results are presented. A 200 W hardware prototype of the proposed SC converter has been developed. Experimental results are presented to validate the efficacy of the proposed converter.
A Single Input DC Source Boost Multilevel Inverter for Renewable Energy Applications
Anurag Priyadarshi,Pratik Kumar Kar,Srinivas Bhaskar Karanki 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
In this paper, a single input DC voltage source boost multilevel inverter topology is presented. The presented converter does not require multiple isolated dc sources or additional circuit for voltage balancing of the split capacitors, thus reduces the overall cost and complexity. The salient feature of the proposed converter is high voltage gain boost capability. Furthermore, due to the input inductor, it has less input current ripple and variable fractional voltage gain, which is a key requirement for maximum power point tracking (MPPT) in photovoltaic application. Based on the proposed topology, a hardware prototype of seven-level boost inverter is developed and the experimental results are presented to validate the performance of the proposed converter.
Anurag Priyadarshi,Pratik Kumar Kar,Srinivas Bhaskar Karanki 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.3
This paper presents a switched capacitor (SC) based bidirectional dc-dc converter topology for high voltage gain applications. The proposed converter is able to operate with multiple integral voltage conversion ratios based on user input. The architecture of a user-friendly, inductor-less multi-voltage-gain bidirectional dc-dc converter is proposed in this study. The inductor-less or magnetic-less design of the proposed converter makes it effective in higher temperature applications. Furthermore, the proposed converter has a reduced component count and lower voltage stress across its switches and capacitors when compared to existing SC converters. An output impedance analysis of the proposed converter is presented and compared with popular existing SC converters. The proposed converter is simulated in the OrCAD PSpice environment and the obtained results are presented. A 200 W hardware prototype of the proposed SC converter has been developed. Experimental results are presented to validate the efficacy of the proposed converter.