EDT-EAPF active power filter is the solution of harmonic control. The devices are connected in parallel to the power network. The harmonics in the power network are detected by external mutual inductors in real time, and the inversion is used to generate the reverse phase compensation current to filter out the harmonics in the power network dynamically. EDT-EAPF can operate independently or in parallel to achieve a larger compensation capacity, which is suitable for harmonic control requirements in various capacities. Meanwhile, the operation of the device is not affected by the power grid structure and load type, and will not resonate with the system to achieve harmonic control of various loads.
