The Active Comprehensive Power Quality Filter & Compensator (DAS), developed by Actionpower, compensates reactive power and suppresses harmonics simultaneously.This device connects in parallel to the distribution system. It senses system current components in real time. Via control calculation and logic processing, it computes required reactive and harmonic components. The 3-phase full-bridge converter then generates corresponding currents and injects them into the grid for intelligent reactive & harmonic compensation.Meanwhile, the device features anti-interference capability. It will not endanger the distribution system during operation, delivering high stability, high reliability and easy maintenance.It serves power distribution sites across sectors: equipment manufacturing, petrochemical, metallurgy, textile, building materials, light industry; civil buildings including data centers, hospitals, large venues, research platforms and premium buildings.