小波变换在有源电力滤波器谐波分析中的应用

为有效分析和解决有源阻抗变换,对使用小波变换检测谐波与间谐波的方法进行了研究,并在此基础上探讨了利用小波分析、研究时频阻抗的控制特性和频率特性的基本原理,提出了利用小波变换来分离谐波与间谐波的算法,并兼顾时域和频域的分辨率.仿真结果表明,该方法不仅具有高分辨率特性,能较好地找出APF的时频阻抗特性,可以较好地分析谐波,以使其跟踪特性最优,为有源电力滤波器谐波抑制提供了可行的解决途径.

Application of wavelet transform in active power filter harmonic analysis

In order to effectively analyze and resolve Active impedance transform, wavelet transform on the use of harmonic and inter harmonic detection methods are studied, and on this basis to explore the use of wavelet analysis to study the control of time-frequency characteristics of impedance and frequency characteristics of the basic principles of analysis of the use of wavelet transform to separate harmonic inter-harmonic wave with the algorithm, taking into account time and frequency domain resolution. The simulation results show that the method not only has the characteristics of high-resolution, but also can identify the APF time-frequency impedance chara-cteristics, it is very useful for harmonic analysis, in the active power filter harmonic inhibitory aspects, and it has providing a feasible solution.