Zero-voltage-switching dual-boost converter with multi-functional inductors and improved symmetrical rectifier for distributed generation systems
Zero-voltage-switching dual-boost converter with multi-functional inductors and improved symmetrical rectifier for distributed generation systems
复制标题
DOI：
10.1049/iet-pel.2012.0031
复制
发表时间：
2012-10
影响因子：
2
通讯作者：
Wuhua Li;D. Xu;Bin Wu;Yi Zhao;Huan Yang;Xiangning He
中科院分区：
文献类型：
--
作者：
Wuhua Li;D. Xu;Bin Wu;Yi Zhao;Huan Yang;Xiangning He
在这项研究中，提出了一种先进的交错式有源钳位双升压转换器，用于具有大输入电流、高输出电压和高升压转换的分布式发电系统。所提出的转换器中只有两个耦合电感器，并且它们都可以集成到一个磁芯中以提高功率密度。多功能集成电感器可用作电流纹波消除电感器和初级次级隔离变压器。此外，在次级侧衍生出改进的倍压器配置，使输出二极管仅维持高输出电压的一半。由于多功能集成电感的次级串联结构，可以自动平衡输出二极管电压应力。此外，所有初级开关在开关转换期间都实现了零电压开关操作。由于漏感，输出二极管反向恢复问题得到缓解。最后，搭建了一个 1 kW 40-380-V 原型机来验证理论分析的有效性。
In this study, an advanced interleaved active clamp dual-boost converter is proposed for distributed generation systems with large input current, high-output-voltage and high-step-up conversion. There are only two coupled inductors in the proposed converter and both of them can be integrated into one magnetic core to improve the power density. The multi-functional integrated inductors can serve as inductors for current ripple cancellation and transformer for primary-secondary isolation. Furthermore, an improved voltage-doubler configuration is derived on the secondary side to make the output diodes sustain only half of the high output voltage. The output diode voltage stress can be auto-balanced because of the secondary series-connected structure of the multi-functional integrated inductors. In addition, zero-voltage-switching operation is achieved for all the primary switches during the switching transition. The output diode reverse-recovery problem is alleviated because of the leakage inductance. Finally, a 1-kW 40-380-V prototype is built to demonstrate the effectiveness of the theoretical analysis.