Active Power Filter Module

The Active Power Filter (APF) module is a crucial power electronic device in modern power systems. It effectively performs harmonic suppression through Fast Fourier Transform (FFT) analysis of current waveforms and implements reactive power compensation using instantaneous power theory algorithms. These functions significantly improve power quality by maintaining Total Harmonic Distortion (THD) within acceptable limits. The module can be integrated into inverter output filters, where pulse-width modulation (PWM) control techniques ensure stable and reliable power output for electrical systems. Implementation typically involves digital signal processors (DSPs) or FPGAs for real-time processing of voltage and current measurements. Whether in industrial applications or residential usage, APF modules play a vital role in ensuring proper operation of electrical equipment and reducing energy waste through optimized power factor correction. With advanced control algorithms like proportional-resonant (PR) controllers and predictive current control, the application prospects of active power filter modules are extensive, holding significant importance for the development of the power industry.