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基于无源缓冲电路的零电压关断非隔离型高增益DC-DC变换器

更新时间:2020-06-24 23:38:19 大小:2M 上传用户:zhiyao6查看TA发布的资源 标签:DC-DC变换器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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提出一种基于无源缓冲电路的零电压关断非隔离型高增益DC-DC变换器.在所提无源缓冲电路的帮助下,所有功率开关实现了零电压关断(ZVT),开关关断损耗有效减少,变换器整体工作效率得以提升.在电压倍增单元的帮助下,所提变换器输入输出电压实现了高增益变换,且输入输出增益比可以根据电压倍增单元中增益单元数进行调节.上述性能特点使得所提变换器较适用于光伏发电系统.该文对变换器的拓扑架构进行了简要阐述,并对含有2个电压倍增单元的变换器工作原理及性能特点进行了详细分析,最后搭建了1台功率为800W的实验样机进行实验,验证了理论分析的正确性.

A non-isolated zero voltage turn-off (ZVT) high step-up DC-DC converter based on passive snubber circuit has been proposed in this paper. With the proposed passive snubber circuit, all switches achieve ZVT , which can reduce the turn off losses of the switches and improve the overall efficiency of the converter. The proposed converter can also achieves high voltage conversion gain. Moreover, the conversion gain can be adjusted by the number of the voltage multiple cells. Above characteristics of the proposed converter make it suitable for photo-voltaic power generation system. This paper illustrates the topology derivation process; operation principle and performance charact...

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基于无源缓冲电路的零电压关断非隔离型高增益DC-DC变换器.pdf 2M

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