Core Function: Primarily reactive power compensation. It acts as a controlled current source capable of instantaneously absorbing or injecting reactive power (either inductive or capacitive) in response to grid demands.

Ancillary Functions: Possesses a certain degree of harmonic mitigation capability (typically to a limited extent).

Technical Features: Characterized by extremely rapid response speeds (within 5 ms), the ability to achieve continuous reactive power regulation ranging from capacitive to inductive, and immunity to grid voltage fluctuations.

Core Function: Primarily harmonic filtering. It uses external current transformers to detect harmonic currents in the power grid in real time and actively generates a compensation current of equal magnitude and opposite phase to cancel out the harmonics.

Additional Functions: Capable of providing minor reactive power compensation and correcting three-phase unbalance.

Technical Features: Employs fully controlled technology, enabling precise mitigation of harmonics ranging from the 2nd to the 50th order.