有源电力滤波器的实时谐波检测方法

The Real-Time Harmonic Detection Methods for Active Power Filter

谐波检测方法的精度及动态响应速度极大影响到有源电力滤波器的性能,本文归类介绍了有源电力滤波器常用的几种实时谐波检测方法,包括频域的滑窗迭代离散傅立叶变换及卡尔曼滤波的算法,时域的瞬时无功的pq理论及dq变换的算法。最后介绍了相关实时谐波检测方法的特点。

The accuracy and the speed of dynamic response ：for harmonic detection affect the performance of active power filters greatly. The commonly used real- time harmonic detection methods are classified and introduced, including the algorithms based on the Recursive Discrete Fourier Transform （RDFT）, Kalman Filtering （KF） in frequency domain, and the algorithms based on the Instantaneous Reactive Power pq theory （IRP）, dq Transform in time domain. The related characteristics of the harmonics detection methods are proposed at last.