一种新的分阶型有源电力滤波器

A New Ordered Active Power Filter

为进一步提高有源电力滤波器动态响应速度和补偿精度,提出一种新的分阶型谐波提取控制策略,并构成三电平有源滤波系统。对比研究快速傅里叶变换型各次电流提取算法和瞬时无功算法,提出一种分阶区段谐波检测控制算法。分析不同次谐波特性及控制策略,研究各个频率段的谐波电流控制效果,并设计一种多电平拓扑结构的有源电力滤波器系统,仿真试验的数据对比分析对该算法控制和系统设计作进一步验证。

In order to further improve the dynamic response speed and compensation precision of the active power filter,a new ordered harmonic extraction control strategy is proposed and a threelevel active filter system is established.An ordered interval harmonic detection and control algorithm is proposed by comparative study of current extraction algorithm for each number of fast fourier transformation(FFT)and instantaneous reactive power algorithm.Characteristics of different numbers of harmonics and control strategies are analyzed;the effect of harmonic current control in each frequency band is studied;an active power filter system with multi-level topology structure is designed;and the data of the simulation test are compared and analyzed to further verify the algorithm control and system design.