Extendable high gain low current/high pulse modified quadratic–SEPIC converter for water treatment applications

• Published in: Scientific reports Vol. 14; no. 1; p. 4899
• Main Authors: Sumathy, P., Navamani, J. Divya, Mohamed Ali, Jagabar Sathik, Lavanya, A., Vishnuram, Pradeep, Bajaj, Mohit, Dost Mohammadi, Shir Ahmad, Prokop, Lukas
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 28-02-2024; Nature Publishing Group; Nature Portfolio
• Subjects: 639/166; 639/4077; 639/705; High gain; High voltage; High voltage pulse; HPSQB; Humanities and Social Sciences; multidisciplinary; Multiplier cell; Renewable energy; Science; Science (multidisciplinary); Topology; Voltage; Water treatment; HPSQB; Water treatment; High gain; Multiplier cell; High voltage pulse
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-024-55708-z

Substantial attention has been drawn over the past few years by high step-up dc-dc converters owing to their applications in a wide range. Apart from renewable energy applications, high voltage/ high pulse converters are efficiently used in water treatment applications. The converter suggested a combination of Quadratic and SEPIC converters with a diode-capacitor cell. This topology generates high-voltage repetitive pulses with a single semiconductor switch and reduced component count. The stress across the components is less than the high-gain converters reported in the literature. The topology has an extendable feature by increasing the number of diode-capacitor cells without affecting the stress. The superiority of the high pulse generating topology is validated with a similar converter in the literature. This paper discusses the nL5 simulator results for the proposed rated topology required for water treatment. A scaled-down 50 W prototype is tested for various input voltages to generate high voltage pulse, and the analytical study is validated.