一种新型的有源滤波器谐波检测算法研究

针对有源滤波器实际应用的需要,对传统的ip-iq检测算法进行改进,省略了PLL（锁相环）环节和三相至两相的坐标变换,减少了算法计算量,可将其直接应用于三相三线、三相四线以及单相系统的基波和任意次谐波电流检测。仿真结果表明,这种新型检测方法受三相电压不对称的影响小,能更好地适应电网谐波和基波电流检测的需要,可以获得较高的检测精度和较快的动态响应速度。

Study of a New Harmonic Detection Algorithm for Active Power Filter

In view of practical needs of the active power filter,the traditional ip-iq detection algorithm was improved,getting rid of the phase-locked loop(PLL) circuit and coordinate transformation from three-phase to two-phase and reducing the amount of cal-culation. Also the detection algorithm can be directly applied to the fundamental and arbitrary harmonic currents detection of three-phase three-wire,three-phase four-wire and single-phase system. The results of simulation show that this new detection method,whi...