| 一种变频器和工频电网之间同步切换的方法 |
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| 引用本文： | 张少云,刘斐,张铁军,陈刚. 一种变频器和工频电网之间同步切换的方法[J]. 变流技术与电力牵引, 2011, 0(3) |
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| 作者姓名： | 张少云 刘斐 张铁军 陈刚 |
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| 作者单位： | 株洲变流技术国家工程研究中心有限公司; |
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| 摘 要： | 工频旁路运行是变频器的一种重要运行方式,变频器与工频电网间切换若不当,则会引起很大的电流冲击和严重的电磁干扰。文章提出了一种软件估算工频电源频率的方法,介绍了一种使用三相锁相环使变频器的输出频率和相位与工频电源的相同的方法,以改善工频切换性能。
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| 关 键 词： | 变频器 锁相环 旁路切换 |
A Method of Synchronization Switching between Frequency Converter and Grid |
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| ZHANG Shao-yun,LIU Fei,ZHANG Tie-jun,CHEN Gang. A Method of Synchronization Switching between Frequency Converter and Grid[J]. Converter Technology & Electric Traction, 2011, 0(3) |
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| Authors: | ZHANG Shao-yun LIU Fei ZHANG Tie-jun CHEN Gang |
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| Affiliation: | ZHANG Shao-yun,LIU Fei,ZHANG Tie-jun,CHEN Gang(Zhuzhou National Engineering Research Center of Converters Co.,Ltd.,Zhuzhou,Hunan 412001,China) |
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| Abstract: | Bypass mode is one of the important running modes of frequency converters.It may incur current surge and serious electromag-netic interference(EMI) if the switching method between frequency converter and grid is incorrect.It presents a calculation method of power frequency with software,and introduces a way to improve switching performance using phase lock loop which make the output frequency and phase angle of inverter are the same. |
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| Keywords: | frequency converter phase lock loop bypass switching |
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