A Novel High-Gain Multi-Stage Switched-Capacitor-Based DC-DC Boost Converter with Closed-Loop Control

Priyanshu Kumar, Moina Ajmeri, Ashutosh Kumar Singh, Rajib Kumar Mandal and Akshay Kumar Saha ()
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Priyanshu Kumar: Department of Electrical Engineering, National Institute of Technology, Patna 800005, India
Moina Ajmeri: Department of Electrical Engineering, National Institute of Technology, Patna 800005, India
Ashutosh Kumar Singh: Department of Electrical Engineering, National Institute of Technology, Patna 800005, India
Rajib Kumar Mandal: Department of Electrical Engineering, National Institute of Technology, Patna 800005, India
Akshay Kumar Saha: Discipline of Electrical, Eletronic and Computer Engineering, University of KwaZulu-Natal, Glenwood, Durban 4041, South Africa

Energies, 2024, vol. 17, issue 21, 1-20

Abstract: In this manuscript, a direct current (DC) boost converter based on a switched-capacitor circuit with closed-loop control, tailored for applications with high-voltage gain, is introduced. The converter utilizes a network with switching capacitors to enhance voltage gain without relying on inductors, making it ideal for high-voltage scenarios. An active disturbance rejection control (ADRC)-based control scheme is used to maintain output voltage stability in the presence of disturbances. The proposed converter’s functionality and performance are assessed through simulations and experimental tests under various load conditions. A loss analysis, considering the losses from switches and diodes, is provided to determine the net efficiency. The results from both simulations and experiments show that the proposed converter achieves a high-voltage gain, excellent load regulation, and rapid transient response, highlighting its potential for applications that require a high-voltage boosting operation.

Keywords: SC-BC; DC-DC converter; duty ratio; voltage gain; volt–sec balance; ADRC; observer; controller (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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