An active filter cabinet is a cabinet type device that installs an active power filter (APF) for dynamically suppressing harmonics and compensating reactive power to improve power quality.
It not only includes the active filter itself, but also integrates other necessary components such as control systems, communication interfaces, protection devices, etc., for more convenient integration and use in practical applications. As the core part of the active filter cabinet, the active filter is responsible for achieving filtering function, which dynamically compensates for harmonics and reactive power in the power grid. This device can overcome the limitations of traditional filters (such as LC filters) in harmonic suppression and reactive power compensation, achieving more accurate and efficient compensation effects.
The active filter cabinet is based on modern power electronics technology and high-speed digital signal processing technology. It detects the load current in the power grid in real time, quickly separates the harmonic current content, and sends control instructions according to the magnitude of the harmonic current. It generates compensation currents of equal magnitude and opposite direction and injects them into the power grid to cancel and filter out harmonic currents and achieve reactive power compensation. This not only improves the stability of the power system, but also extends the service life of power equipment and communication systems.
Active filter cabinets are widely used in various fields such as communication, semiconductor, petrochemical, chemical fiber, steel/medium frequency heating, automobile manufacturing, hospitals, theaters, sports venues, etc. They are of great significance for improving power quality and ensuring stable operation of power systems.