| 一种基于锁相同步与滑窗迭代DFT的电力有源滤波器的设计与实现 |
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| 引用本文： | 林洁,缑新科.一种基于锁相同步与滑窗迭代DFT的电力有源滤波器的设计与实现[J].电气自动化,2010,32(5):68-70. |
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| 作者姓名： | 林洁 缑新科 |
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| 作者单位： | 兰州理工大学电气工程与信息工程学院,甘肃兰州730050 |
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| 基金项目： | 甘肃省自然科学基金项目，甘肃省工业过程先进控制重点实验室项目 |
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| 摘 要： | 电力有源滤波器APF（Active Power Filter）的动态补偿要求能够准确、实时地检测出电网中瞬态变化的畸变电流。首先提出了一种基于硬件锁相同步的滑窗迭代DFT谐波检测方法,该算法通过硬件锁相同步,可大大减小DFT在非同步采样时带来的误差。然后完成了一个基于上述算法的适用于低压配电系统的并联型APF的设计。仿真实验结果表明了该方法的可行性。
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| 关 键 词： | 电力有源滤波器 锁相环 谐波检测 滑窗迭代 |
Design and Implementation of a Active Power Filter Based on Phase-locked Loop and Sliding-window Iterative DFT |
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| Lin Jie,Gou Xinke.Design and Implementation of a Active Power Filter Based on Phase-locked Loop and Sliding-window Iterative DFT[J].Electrical Automation,2010,32(5):68-70. |
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| Authors: | Lin Jie Gou Xinke |
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| Affiliation: | Lin Jie Gou Xinke ( College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China) |
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| Abstract: | The dynamic compensation of APF（active power filter） demands that distortion current in grid should be accurately and real-time detected. For solving the problems of DFT（Discrete Fourier Transform,DFT） in the non-synchronized sampling,this paper presents a sliding window iterative DFT algorithm based on phase-locked loop. The method can reduce errors caused by the non-synchronous sampling by phase-locked loop. Then a set of parallel type APF is designed based on above algorithm. The simulation results show that the method is feasible. |
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| Keywords: | active power filter phase-locked loop harmonic detection sliding-window iterative |
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