An active power filter, a key offering from Sinotech Group, operates through a sophisticated and dynamic process to enhance power quality. At its core, the active power filter (APF) functions by actively counteracting harmonic distortions and reactive power issues within an electrical system. The operation begins with the use of sensors that continuously monitor the electrical current and voltage in the power grid. These sensors accurately detect the harmonic components present in the load current, which are generated by non-linear electrical devices such as variable frequency drives, rectifiers, and switching power supplies. Once the harmonics are detected, the control system of the active power filter, which is equipped with advanced digital signal processing algorithms, analyzes the data. Based on this analysis, the control system generates a control signal that is sent to the power electronics converter within the APF. The power electronics converter, typically composed of insulated-gate bipolar transistors (IGBTs) or other high-performance semiconductor devices, then generates a compensating current. This compensating current is precisely equal in magnitude but opposite in phase to the detected harmonic current. When injected into the power system, the compensating current cancels out the harmonic components, effectively filtering them from the electrical supply. As a result, the current flowing through the system becomes a clean, sinusoidal waveform, significantly reducing the total harmonic distortion (THD). In addition to handling harmonic currents, active power filters from Sinotech Group can also manage reactive power. By adjusting the phase and magnitude of the compensating current, the APF can either supply or absorb reactive power as needed, thereby improving the power factor of the electrical system. This dual functionality makes active power filters highly effective in optimizing the performance of electrical systems, reducing energy losses, and protecting connected equipment from the detrimental effects of harmonic distortions and poor power factor. Sinotech Group's expertise in electrical engineering and power electronics ensures that their active power filters are designed for reliable and efficient operation, providing a robust solution for power quality improvement across various industries.