Title :
Control method for a combined active filter system employing a current source converter and a high pass filter
Author :
Fukuda, Shoji ; Endoh, Takayoshi
Author_Institution :
Dept. of Electr. Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
This paper describes a control method with a combined filter system which senses load current, source current, and line voltage to create reference signals for an active filter. The transfer function of the active filter is identified and is used for the control system design. It is shown that the source current feedback is most effective in suppressing the harmonic-enlarging effects due to parallel resonance and the harmonic current generated by source harmonic voltages. A small setup controlled by a DSP was built, and the validity of the proposed method was demonstrated by experimental results
Keywords :
active filters; electric current control; high-pass filters; power convertors; power system harmonics; transfer functions; DSP-based control; combined active filter system; control method; current source converter; harmonic-enlarging effects suppression; high pass filter; line voltage sensing; load current sensing; parallel resonance; reference signals; source current sensing; source harmonic voltages; transfer function; Active filters; Control systems; Digital signal processing; Feedback; Power harmonic filters; Resonance; Superconducting filters; Transfer functions; Voltage control; Wideband;
Journal_Title :
Industry Applications, IEEE Transactions on
