Hybrid electric filter device based on third harmonic active power filter

The utility model discloses a hybrid electric filter device based on a third harmonic active power filter. The hybrid electric filter device based on the third harmonic active power filter comprises a hybrid third harmonic electric active power filter 1, a fifth LC passive power filter bank 2, a seventh LC passive power filter bank 3, a power supply side voltage transformer YT, a power supply side current transformer CT1, a load side current transformer CT2 and a hybrid third harmonic electric active power filter 1 side current transformer CT3. The device not only can be used in a three-phase four-line power distribution system, but also can be used in a three-phase three-line power distribution system, is especially suitable for a system with large fifth and seventh harmonics, and an electric field with more three harmonics.