Asymmetrical PWM Series-Capacitor High-Conversion-Ratio DC–DC Converter

Autor:	Honnyong Cha, Dai-Van Bui, Viet-Chan Nguyen
Rok vydání:	2021
Předmět:	Physics Nonlinear system Capacitor Series (mathematics) Control theory Duty cycle law Power electronics Electrical and Electronic Engineering Inductor Pulse-width modulation Voltage law.invention
Zdroj:	IEEE Transactions on Power Electronics. 36:8628-8633
ISSN:	1941-0107 0885-8993
DOI:	10.1109/tpel.2021.3056659
Popis:	In this letter, an asymmetrical pulsewidth modulated (PWM) scheme is proposed to solve the inductor current unbalance and nonlinear voltage gain issues of the series-capacitor (SC) high-conversion-ratio (HCR) converter when $D > 0.5$ . With the proposed scheme, the converter can achieve both current balancing and high step-down conversion even for $D > 0.5$ . As a result, combined with the conventional PWM scheme, the duty cycle limitation of the SC-HCR converter is completely eliminated. A 2-kW prototype SC-HCR converter was fabricated and tested to validate the performance of the proposed PWM scheme.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::40df09388c92d9c45bd725c6e767dcab https://doi.org/10.1109/tpel.2021.3056659 Zobrazit plný text záznamu