A Plug-Play Active Resonant Soft Switching for Current-Auto-Balance Interleaved High Step-Up DC/DC Converter
A Plug-Play Active Resonant Soft Switching for Current-Auto-Balance Interleaved High Step-Up DC/DC Converter
复制标题
用于电流自动平衡交错式高升压 DC/DC 变换器的即插即用有源谐振软开关
DOI：
10.1109/tpel.2018.2878340
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发表时间：
2019-08
影响因子：
6.7
通讯作者：
Zeng Tao
中科院分区：
文献类型：
--
作者：
He Liangzong;Xu Xinyong;Chen Jiazhe;Sun Jiaqing;Guo Dong;Zeng Tao
在高增益电压转换应用中，低侧开关通常承受较大的电流应力，导致主导开关损耗。本文提出了一种基于高级交错高升压变换器的通用软开关方法，该方法性能优异，但在硬开关中工作，采用即插即用谐振电路来解决这一问题。在该软开关方法下，主开关达到零电压导通和零电压关断，并推导出软开关条件。同时，所增加的辅助开关可以在零电流状态下关断，也可以在零电流状态下接通。更重要的是，由于其位于能量传递路径之外，辅助电路不会导致增益损失给变换器，并保持其现有的其他优点，如电流自动平衡和二极管反恢复良好。建立了一个1千瓦的样机并进行了测试，验证了考虑有源谐振软开关的变换器的显著效率提高和优点维护。
In high gain voltage conversion applications, the low-side switches usually suffer large current stress, resulting in dominate switching loss. In this paper, a general soft-switching method based on an advanced interleaved high-step-up converter, which features excellent performance but works in hard-switching, is presented to combat this issue by using a plug-play resonant circuit. Under this soft-switching method, the main switches reach zero-voltage switching (ZVS) turn-on and ZVS turn-off, and the soft-switching condition is derived. Meanwhile, the added auxiliary switches could be turned off under ZVS condition and turned on under zero-current switching condition as well. More importantly, due to its location out of the energy transferring path, the auxiliary circuit will never lead gain lost to the converter and maintain its other existing merits, such as current auto-balancing and diode inverse-recovery well. A 1-kW prototype is built and tested to verify the significant efficiency improvement and merits maintenance for the proposed converter considering active resonant soft switching.
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