An active filter, offered by Sinotech Group, operates by using power electronics and digital control systems to mitigate harmonic distortions in electrical networks. The process begins with sensors that monitor incoming current and voltage waveforms, detecting harmonic components caused by non-linear loads such as motor drives, inverters, or industrial equipment. A digital signal processor (DSP) analyzes these signals to identify the frequency, amplitude, and phase of each harmonic. Based on this analysis, the active filter generates a compensating current that is equal in amplitude but opposite in phase to the detected harmonics. This compensating current is injected into the system through an inverter, effectively canceling out the harmonics and restoring the waveform to its fundamental frequency. Sinotech’s active filters feature adaptive control algorithms that adjust to changing load conditions, ensuring continuous harmonic suppression. The technology integrates seamlessly with high-voltage transmission, medium and low voltage distribution systems, and renewable energy setups, leveraging partnerships with global manufacturers to deliver efficient, reliable power quality solutions.