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A Study on Observer-Based Robut Algorithm for Voltage Regulated Current Source Power Filter
Geum-Bae Cho,Hyung-Lae Back,Jong-Gyu Hwang,Han-Sung Kim,Hyong-Soo Mok,Byung-Moon Han 전력전자학회 1995 ICPE(ISPE)논문집 Vol.1995 No.10
Active Power Filters(APF) have been developed recently to' solve the harmonics disturbance problems on power system networks The voltage regulation technique controlled the voltage of inverter output capacitor 15 used for current source power filter or precise control, voltage drop at ac side is .needed expressed differentiator If external noise is included in detected voltage drop signal, then the noise is differentiated and thus the resultant signal will be distorted seriously To reduce this amplified differential noise, observer algorithm is proposed Noise characteristics at active filter control system are investigated by digital simulation Also, the experimental results are shown to verify the validity of proposed technique.