A Novel Switched Capacitor DC-DC Converter Topology for High Voltage and High Gain Application

Ashwin, K and Nakul Narayanan, K and Umanand, L and Subba Reddy, B (2022) A Novel Switched Capacitor DC-DC Converter Topology for High Voltage and High Gain Application. In: IEEE International Conference on "Power Electronics, Smart Grid, and Renewable Energy", PESGRE 2022, 2 - 5 January 2022, Virtual, Trivandrum.

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Abstract

Switched Capacitor Converter(SCC) is gaining increased popularity in AC and DC applications due to its advantages such as high energy density, high efficiency, compactness, and minimal cost. However, their application in high gain and high voltage applications is of significant interest as the device ratings and the converter cost increase proportionally. Several topologies of SCC's are considered in literature like the Fibonacci, Ladder, Multilevel, etc., wherein they possess a common problem of higher device rating or lower efficiency in high gain and high voltage application. This paper proposes a novel SCC topology for high voltage and high gain applications where the device ratings are optimized to minimize the cost and size of the converter. In the proposed topology, all the capacitors and almost half the switches and diodes are rated for input voltage. A general formula to obtain device ratings of the converter is also derived in the paper. A state space average model is utilised to find the steady state output voltage and efficiency. Also, a generalized average loss model is formed based on the average current-based conduction loss model to determine load regulation of the proposed converter. The analysis of the converter is performed and validated through simulations. This paper deals only with the steady state analysis and loss model of the proposed SCC. © 2022 IEEE

Item Type:	Conference Proceedings
Publication:	PESGRE 2022 - IEEE International Conference on "Power Electronics, Smart Grid, and Renewable Energy"
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	DC-DC converters; HVDC power transmission, Average loss; Average loss model; Blocking voltage; Charge multiplier; Equivalent resistance; High gain; Load regulations; Loss model; Switched capacitor converter; Switching phase, Topology
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology) Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Date Deposited:	19 May 2022 06:43
Last Modified:	19 May 2022 06:43
URI:	https://eprints.iisc.ac.in/id/eprint/71866

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