DC-DC Converter with Large Step-Down Voltage Conversion Ratio

被引:0
作者
Hwu, K. I. [1 ]
Jiang, W. Z. [1 ]
机构
[1] Natl Taipei Univ Technol, Dept Elect Engn, Taipei, Taiwan
来源
2016 IEEE INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY TECHNOLOGIES (ICSET) | 2016年
关键词
Coupled-Inductor-Based; DC-Blocking Capacitor; DC Magnetizing Inductance Current; Large Step-Down Voltage Conversion Ratio; BUCK CONVERTER; CORE LOSSES;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
An improved non-isolated coupled-inductor-based high-step-down converter is presented in this paper. Compared with other coupled-inductor-based high-step-down converters, the proposed converter features zero DC-offset current and non pulsating output current. In the proposed converter, one of the DC-blocking capacitors is connected between the input voltage and the coupled inductor. Therefore, the step-down voltage conversion ratio can be much higher than those of the traditional SR buck converter and the tapped-inductor buck converter. Furthermore, its voltage conversion ratio is linear, which makes control easier. Moreover, due to the DC-blocking capacitors, the DC magnetizing inductance current can be reduced to zero. Thus, the magnetizing current can be positive and negative, and the entire core B-H loop can be used, ranging from the first quadrant to the third quadrant. That is, the utilization of the coupled inductor can be upgraded. Also, due to a discrete output inductor, the proposed converter features non-pulsating output current. In this study, detailed theoretical analyses and experimental results are offered to demonstrate the feasibility and effectiveness of the proposed converter.
引用
收藏
页码:126 / 131
页数:6
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