A Study on the Implementation of Multi-functional Series Active Power Filter

초록

Power quality has been become a very important factor in power systems to electric power suppliers and consumers with proliferation of various electric/electronic equipments and computer systems. The major causes of a poor power quality are harmonic currents, poor power factor, voltage sags, voltage unbalances, and etc. In this paper, novel control methods of series active power filter is proposed to improve power quality. The control method of series active power filter, which is simple and can be easily implemented, is used to compensate the harmonic currents and to improve power factor in the electric source. A new voltage compensation method, which is able to implement more stable voltage compensation characteristics owing to the use of a feed-back control, is proposed. To verify the validity of the proposed method, experimental results are shown.