| 一种基于ZCT软开关的三相PWM逆变器技术 |
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| 引用本文： | 王天亮,唐芬,金新民,童亦斌. 一种基于ZCT软开关的三相PWM逆变器技术[J]. 变流技术与电力牵引, 2009, 0(5): 19-22,26 |
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| 作者姓名： | 王天亮 唐芬 金新民 童亦斌 |
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| 作者单位： | 北京交通大学新能源研究所,北京,100044 |
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| 摘 要： | 采用软开关技术可以有效地减小开关动作带来的损耗，但由于增加了辅助回路，又会造成额外的损耗。文章介绍了一种基于零电流转移（ZCT）软开关的三相光伏并网逆变器，分析了这种软开关技术的工作原理，并提出了一种软开关谐振参数的设计方法，从而使软开关的总损耗最小。同时对研制的100kVA软开关光伏并网逆变器样机进行了实验，并对软、硬开关的开关损耗进行了对比研究。
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| 关 键 词： | 软开关 PWM逆变器 零电流转移 |
A Three-phase PWM Inverter Technology Based on ZCT Soft-switching |
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| WANG Tian-liang,TANG Fen,JIN Xin-min,TONG Yi-bin. A Three-phase PWM Inverter Technology Based on ZCT Soft-switching[J]. Converter Technology & Electric Traction, 2009, 0(5): 19-22,26 |
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| Authors: | WANG Tian-liang TANG Fen JIN Xin-min TONG Yi-bin |
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| Affiliation: | (New and Renewable Energy Research Institute, Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | Soft-switching technology can effectively reduce the loss caused by switching, but with the addition of auxiliary circuit, will result in excess loss. This article describes a three-phase photovoltaic grid-connected inverter based on zero current transfer （ZCT） soft - switching, analyses the working principle of soft-switching technology, and proposes a design method of soft-switching resonant parameters, which can realize the lowest of total soft-switching loss. Meanwhile, the experimental results of the 100 kVA soft-switching photovoltaic gridconnected inverter prototype are given, and then the soft-switching and hard-switching losses are studied comparatively. |
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| Keywords: | soft-switching PWM inverter zero current transfer（ZCT） |
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