Angle based fast direct power control approach applied on 3-phase 4-wire active power filter

A new fast hybrid control approach of the pq control theory applied to the 3 phase 4 wire active power filter is proposed. The mathematical model developed is based on the direct power control theory using the pq theory. This technique inherits not only the simplicity of the conventional direct power control but also offers a good dynamic response in active filtering. The analysis is verified using the PSIM simulation software.