Soft-Switched Asymmetric Interleaved WCCI High Step-Down Converter With Low-Voltage Stress

Autor:	Siamak Khalili, Hosein Farzanehfard, Navid Molavi
Rok vydání:	2021
Předmět:	business.industry Computer science Ripple Ćuk converter Electrical engineering Energy Engineering and Power Technology Topology (electrical circuits) Inductor law.invention Capacitor Duty cycle law Electrical and Electronic Engineering business Low voltage Voltage
Zdroj:	IEEE Journal of Emerging and Selected Topics in Power Electronics. 9:6692-6699
ISSN:	2168-6785 2168-6777
Popis:	In this article, an asymmetric interleaved nonisolated high step-down dc–dc converter is proposed, which is developed by synthesizing buck and Cuk converters. The main advantages of this topology are low main switches voltage stress, extended duty cycle, continuous output current with low ripple, and providing soft-switching conditions for the main switches and diodes. The switches are turned on under zero-voltage switching (ZVS) condition and capacitive turn-on losses are removed. Besides, the diodes turn-on and off under zero-current switching (ZCS) condition and reverse recovery losses are eliminated. The series capacitors and coupled inductors techniques are used to improve conversion ratio and extend duty cycle without imposing extra voltage stress across the active switches. In addition, winding-cross-coupled inductors (WCCI) technique is used to improve the output current ripple. A 200-W laboratory prototype with 310-V input voltage and 24-V output voltage is implemented to confirm the converter operation and theoretical analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::04249e5faa31f1df059ce0006567f609 https://doi.org/10.1109/jestpe.2021.3069176 Zobrazit plný text záznamu