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

被引：15
|
作者：
Bui, Dai-Van [1 ]
Cha, Honnyong [1 ]
Nguyen, Viet-Chan [1 ]
机构：
[1] Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2021年 / 36卷 / 08期
关键词：
Asymmetrical pulsewidth modulated (PWM); buck converter; high conversion ratio (HCR); interleaved; seriescapacitor (SC); BUCK CONVERTER;
D O I：
10.1109/TPEL.2021.3056659
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：8628 / 8633
页数：6
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