| 交流电子负载的谐波间谐波机理分析研究 |
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| 引用本文： | 安巧静,;朱长青,;赵月飞,;严雪飞.交流电子负载的谐波间谐波机理分析研究[J].军械工程学院学报,2014(5):50-56. |
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| 作者姓名： | 安巧静 ;朱长青 ;赵月飞 ;严雪飞 |
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| 作者单位： | [1]军械工程学院车辆与电气工程系; [2]无人机工程系,河北石家庄050003 |
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| 摘 要： | 分析了馈能型交流电子负载谐波间谐波产生的机理,基于馈能型电子负载工作原理,对电子负载输出信号进行研究,得出输出信号含有谐波间谐波等多种成分.采用MUSIC算法估计电力谐波信号频率,针对电力信号实值的特点,对MUSIC算法进行相应改进,获得较高的检测精度,同时对比了FFT算法的频率估计结果,得出MUSIC对电力谐波信号尤其是间谐波等负载谐波具有更高的精度,对电力系统监测及电能质量评估有较大应用价值.
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| 关 键 词： | 能馈 谐波/间谐波 互调 多重信号分类 |
Research on Harmonic/Inter-Harmonic Analysis and Detection Technique of Energy-Feedback AC Electronic Load |
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| Institution: | AN Qiao-jing, ZHU Chang-qing, ZHAO Yue-fei, YAN Xue-fei (1. Vehicle and Electrical Engineering Department 2. Unmanned Aerial Vehicle Engineering Department, Ordanaee Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | The harmonic/inter-harmonic production mechanism of energy-feedback AC electronic load is analyzed based on the working principle of energy-feedback electronic load.The electronic load output signal is studied,and it is found that the output signal contains harmonic/inter-harmonic and other components.By adopting the MUSIC,the frequency of power harmonic signal is estimated.According to the characteristic that the power signal is real,the MUSIC method is correspondingly improved and a high detection precision is achieved.Compared with the result of frequency estimation based on FFT algorithm,it is found that MUSIC has much higher accuracy with regard to detecting electrical harmonic signal,and the inter-harmonic in particular.This is of great applicable value to the monitoring of electrical power system and to the evaluation of energy power quality. |
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| Keywords: | energy feed-back harmonic/inter-harmonic inter-modulation MUSIC |
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