| 改进单相谐波检测算法在三相四线制APF的应用 |
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| 引用本文： | 黄海宏,杨佳能,吴晓,王海欣.改进单相谐波检测算法在三相四线制APF的应用[J].电子测量与仪器学报,2016,30(1):133-140. |
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| 作者姓名： | 黄海宏 杨佳能 吴晓 王海欣 |
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| 作者单位： | 合肥工业大学电气与自动化工程学院 合肥230009 |
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| 基金项目： | 国家自然基金(51177037) |
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| 摘 要： | 三相四线制系统可能会由于三相不平衡负载而产生不平衡电流,普通的谐波检测算法需要对负序有功电流进行补偿,将提高直流侧电容的设计要求。本文推论了补偿不同电流对直流侧电压脉动的影响,分析了对电流进行选择性补偿的重要性。在传统单相谐波检测算法的基础上,提出了一种基于半周期滑窗平均和谐波反馈的改进单相谐波检测方法,可以对电流进行选择性补偿,降低了直流侧电容设计要求,且具有更好的动态性能。在MATLAB中仿真验证了该谐波检测算法及推论的正确性。并以DSP为控制芯片的实验平台实际验证了该检测算法可行性。
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| 关 键 词： | 三相四线制 电压脉动 滑窗平均 谐波反馈 |
Application of the improved single phase harmonic detection algorithm in three phase four wire active power filter |
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| Huang Haihong,Yang Jianeng,Wu Xiao and Wang Haixin.Application of the improved single phase harmonic detection algorithm in three phase four wire active power filter[J].Journal of Electronic Measurement and Instrument,2016,30(1):133-140. |
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| Authors: | Huang Haihong Yang Jianeng Wu Xiao and Wang Haixin |
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| Affiliation: | School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China,School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China,School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China and School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | In the three phase four wire system, unbalanced load may result in negative sequence current. Normal APF harmonic detection algorithm needs to compensate for the negative sequence current, which will raise the DC capacitor design requirements. The influence of different compensating current on the DC side voltage ripple is deduced. The importance of selective compensation for current is analyzed. On the basis of the traditional single phase harmonic detection algorithm, the improved single phase harmonic detection based on half cycle sliding window average and harmonic feedback is proposed. Selecting current compensation can reduce the DC bus design requirements, and has better dynamic performance. By MATLAB, the simulation shows that the harmonic detection algorithm and inference is correct. Based on the DSP chip, the experimental platform of main control system is built to verify the feasibility of the detection algorithm. |
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| Keywords: | three-phase four-wire voltage ripple sliding window average harmonic feedback |
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