| 一种新颖的三电平软开关谐振型DC/DC变换器 |
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| 引用本文： | 顾亦磊,吕征宇,钱照明.一种新颖的三电平软开关谐振型DC/DC变换器[J].中国电机工程学报,2004,24(8):24-28. |
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| 作者姓名： | 顾亦磊 吕征宇 钱照明 |
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| 作者单位： | 浙江大学电气工程学院,浙江,杭州,310027 |
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| 基金项目： | 国家自然科学基金项目(50237030ZD)~~ |
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| 摘 要： | 该文提出一种新颖的三电平LLC串联电流谐振型DC/DC变换器。每个主开关电压应力是输入电压的一半，并且全范围实现ZVS而不用附加任何电路。整流二极管工作在ZCS状态。该变换器通过二次谐振的手段使得以较小的频率变化范围就可以实现较大的输入输出调节范围。整个变换器只需一颗磁元件。该变换器在高压端输入时效率较高，应用在要求有保持时间的电源产品上特别有利。文中通过一个500V～700V输入，54V／10A输出的样机验证了它的工作原理和特点。该样机在额定条件下效率达到94．7％。
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| 关 键 词： | 三电平软开关谐振型DC／DC变换器 脉宽调制 谐振电流 二极管 |
| 文章编号： | 0258-8013(2004)08-0024-05 |
| 修稿时间： | 2003年12月27 |
A NOVEL THREE LEVEL SOFT SWITCHING RESONSANT DC/DC CONVERTER |
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| GU Yi-lei,LU Zheng-yu,QIAN Zhao-ming.A NOVEL THREE LEVEL SOFT SWITCHING RESONSANT DC/DC CONVERTER[J].Proceedings of the CSEE,2004,24(8):24-28. |
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| Authors: | GU Yi-lei LU Zheng-yu QIAN Zhao-ming |
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| Abstract: | Paper presents a novel three level soft switching LLC series resonant DC/DC converter. ZVS is achieved for each main switch without any auxiliary circuit. Voltage stress of each main switch is a half of input voltage. ZCS is achieved for rectifier diodes. Wide input/output range can be achieved under low frequency range because of secondary resonant. Only one magnetic component is needed in this converter. Efficiency is higher in high line input, therefore, this converter fits power products with time-holding requirement. The principle of operation and the characteristics of the new converter are analyzed and verified on a 500V-700V input 54V/10A output experimental prototype, whose efficiency is 94.7% at rating condition. |
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| Keywords: | Electric poert engineering Three level LLC resonant ZVS DC/DC Power electronics |
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