| 一种新型单级隔离式全桥软开关boost变换器 |
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| 引用本文： | 张厚升.一种新型单级隔离式全桥软开关boost变换器[J].山东理工大学学报,2007,21(2):10-13. |
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| 作者姓名： | 张厚升 |
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| 作者单位： | 山东理工大学电气与电子工程学院 山东淄博255049 |
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| 摘 要： | 提出了一种新型隔离式软开关全桥boost变换器,软开关电路能有效地对桥臂上的电压尖峰进行箝位,并将漏感能量传递到负载端,可以实现所有开关管的零电压关断以及辅助开关管的零电流开通,提高了效率,最后给出了仿真结果.
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| 关 键 词： | 变换器 软开关 漏感 零电压关断 零电流开通 |
| 文章编号： | 24311442 |
| 修稿时间： | 09 1 2006 12:00AM |
An isolated full bridge boost converter with active soft switching |
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| ZHANG Hou-sheng.An isolated full bridge boost converter with active soft switching[J].Journal of Shandong University of Technology:Science and Technology,2007,21(2):10-13. |
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| Authors: | ZHANG Hou-sheng |
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| Institution: | School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China |
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| Abstract: | Isolated full bridge boost converter is attractive in single-stage Power Factor correction(PFC) with isolation requirement,but the major disadvantage is that the transformer leakage inductance causes high transient voltage across the bridge switches,which increases the switching rating and decreases the reliability.In this paper,an active soft switching circuit is proposed for the isolated full bridge boost converter.The proposed soft switching circuit clamps the voltage across the full bridge,transfers the energy in the leakage inductance to the load,and provides zero voltage turn-off for all the main switches.Furthermore,the auxiliary switch features zero current turnon and zero voltage turn-off.Therefore,the efficiency is improved.The simulation result is present at last. |
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| Keywords: | converter soft switching leakage inductance zero voltage turn-off zero current turn-on |
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