Dynamic Active Power Quality Synthetic Filter Compensator (DAS) is a power compensation system developed by ACTIONPOWER that compensates for reactive power and harmonics in the system simultaneously. This device connects in parallel to the distribution system and continuously monitors the system's current components. Through control computation and logical changes, it calculates the required reactive and harmonic components of the system. Then, through a three-phase full-bridge converter circuit, the device actively generates the necessary reactive and harmonic currents and injects them into the distribution system, achieving intelligent compensation that addresses both reactive power and harmonics. Additionally, the equipment has anti-interference features, does not endanger the distribution system during operation, and offers high stability, reliability, and easy maintenance. The application fields of DAS include industrial power distribution sites such as equipment manufacturing, petrochemical industry, metallurgy, textile industry, building materials industry, light industry, etc., as well as civil architecture industries like data centers, hospitals, large venues, research platforms, high-end buildings, etc.