| 基于正序基波提取器的无功、谐波和负序电流检测方法 |
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| 引用本文： | 汤赐,罗安,程莹,代亚培.基于正序基波提取器的无功、谐波和负序电流检测方法[J].变流技术与电力牵引,2008(5):43-48. |
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| 作者姓名： | 汤赐 罗安 程莹 代亚培 |
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| 作者单位： | 湖南大学电气与信息工程学院,湖南长沙410082 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 有源滤波器能否按其工作原理实现预期的谐波抑制效果，在很大程度上还有赖于对电网中无功、谐波和负序电流快速而准确的检测。通过对幅值积分信号所具有的选频特性进行分析，研究了一种正序基波提取器，在此基础上提出了一种新型的无功、谐波和负序电流检测方法。基于正序基波提取器的检测方法既不需要锁相环、低通滤波器，也不需要将α-β坐标系变换到d-q坐标系及其反变换的计算。仿真与实验结果均证明采用该检测方法的有源滤波器具有良好的补偿性能。
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| 关 键 词： | 并联型 有源滤波器 电流检测 正序基波提取器 |
A Current Detecting Method for Reactive Power, Harmonic and Negative Sequence Based on Positive Sequence Extractor of Fundamental Wave |
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| TANG Ci,LUO An,CHENG Ying,DAI Ya-pei.A Current Detecting Method for Reactive Power, Harmonic and Negative Sequence Based on Positive Sequence Extractor of Fundamental Wave[J].Converter Technology & Electric Traction,2008(5):43-48. |
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| Authors: | TANG Ci LUO An CHENG Ying DAI Ya-pei |
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| Affiliation: | TANG Ci,LUO An,CHENG Ying,DAI Ya-pei (College of Electrical , Information Engineering,Hunan University,Changsha,Hunan 410082,China) |
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| Abstract: | Whether the active power filters (APF) could or not get desirable harmonic eliminating effects according to the work principle, it mainly depends on the fastand accurate detecting method for reactive, harmonic and negative sequence current . After analyzing the selective frequency characteristic of amplitude integration signal, this paper addresses a positive sequence extractor of fundamental wave, and presents a novel current detecting method for reactive power, harmonic and negative sequence. This detecti... |
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| Keywords: | shunt active power filter detecting method positive sequence extractor of fundamental wave |
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