| 一种隔离型双向软开关DC/DC变换器 |
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| 引用本文： | 马棡,瞿文龙,刘圆圆,梁斌.一种隔离型双向软开关DC/DC变换器[J].清华大学学报(自然科学版),2006,46(10):1657-1660. |
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| 作者姓名： | 马棡 瞿文龙 刘圆圆 梁斌 |
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| 作者单位： | 清华大学,电机工程与应用电子技术系,电力系统及大型发电设备安全控制和仿真国家重点实验室,北京,100084 |
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| 基金项目： | 国家高技术研究发展计划(863计划);台达电力电子科教发展基金 |
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| 摘 要： | 针对双向DC/DC变换器存在的开关损耗高等问题,提出了一种新型的隔离型双向软开关DC/DC变换器。该变换器由对称的拓扑结构组成。在电感和变压器漏感的作用下,变换器中的开关元件能够在较大的负载范围内实现零电压开关,同时在脉宽调制的控制下,二极管实现了零电流关断。这些措施减小了开关损耗、电压电流应力以及电磁干扰。分析了工作原理和开关过程,研制了一台500 W的试验样机并进行了试验。试验结果证明:在轻载和重载的条件下,所有的开关管都能够零电压导通,同时二极管能够在电流为零(ZCS)的情况下自然关断。
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| 关 键 词： | 双向DC/DC变换器 隔离型软开关 开关损耗 |
| 文章编号： | 1000-0054(2006)10-1657-04 |
| 修稿时间： | 2005年7月14日 |
Isolated soft switching bidirectional DC/DC converter |
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| MA Gang,QU Wenlong,LIU Yuanyuan,LIANG Bin.Isolated soft switching bidirectional DC/DC converter[J].Journal of Tsinghua University(Science and Technology),2006,46(10):1657-1660. |
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| Authors: | MA Gang QU Wenlong LIU Yuanyuan LIANG Bin |
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| Abstract: | A soft switching bi-directional DC/DC converter was developed to reduce switching losses.The converter has two symmetrical topologies.Zero voltage switching is realized for all switches over a large load range by using an inductor and the leakage inductance of a high frequency transformer.The diode reverse recovery is also reduced with zero current switching with pulse-width modulation control.These measures reduce the switching losses,the current and voltage stresses and the electromagnetic interference.A 500 W prototype was built and tested to show that all the switches can operate in the zero voltage switching condition from light loads to heavy loads and that the diodes achieve soft switching with the zere current switching. |
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| Keywords: | bidirectional DC/DC converter isolated soft switching switching losses |
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