软开关高增益准YZ源DC-DC变换器
Soft-switched High Voltage Gain Quasi-YZ Source DC-DC Converter
李海滨 1颜胥 1翁雨森 1林佳奇 1金涛1
作者信息
- 1. 福州大学电气工程与自动化学院,福建省 福州市 350108
- 折叠
摘要
针对新能源发电系统中所需要的高升压非隔离变换器升压能力不足问题,文中基于Y源变换器和准Z源变换器的优点,提出一种软开关高增益准YZ源DC-DC变换器.所提变换器不仅提高了升压能力,还能够有效吸收漏感产生的电压尖峰.除此之外,应用同步整流技术,使得开关管和二极管工作在软开关条件,提升了转换效率.此外,所提变换器由于电源输入端连接的是单个电感,输入电流连续,电流纹波小.不仅如此,提出的变换器还具备开关管电压应力低、输入输出电压共地等优点.首先对所提变换器的工作模态和稳态进行分析;其次定量计算效率以及损耗分布;将所提变换器的性能与其他变换器进行对比,并明确设计要求;最后通过实验室制作的样机,验证所提变换器的有效性.
Abstract
In order to solve the problem of insufficient boost capacity of high boost non-isolated converters required in renewable energy system,a soft-switched high voltage gain quasi-YZ source DC-DC converter is proposed based on the advantages of Y source converter and quasi-Z source converter.The proposed converter can not only improve the voltage boost capacity,but also effectively absorb voltage spikes caused by leakage inductor.Furthermore,the application of synchronous rectification technique enables the switches and diodes to operate in soft switching condition and improves the conversion efficiency.In addition,the proposed converter has continuous input current and low current ripple due to the single inductor connected at the input voltage.Moreover,it has the advantages of low switch voltage stress and common ground between input and output voltages.First,the working modes and steady states of the proposed converter are analyzed.Then,efficiency and loss distribution are calculated quantitatively.The performance of the proposed converter is compared with other converters,and the design requirements are defined.Finally,the effectiveness of the proposed converter is verified by a prototype made in the laboratory.
关键词
高增益/软开关/Y源变换器/准Z源变换器/DC-DC变换器Key words
high voltage gain/soft switching/Y source converter/quasi-Z source converter/DC-DC converter引用本文复制引用
基金项目
国家自然科学基金(52377088)
中央财政引导地方科技发展项目(2021L3005)
出版年
2024
国家科技期刊平台
NSTL
万方数据