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 :
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 to suppress 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; control system synthesis; digital control; digital signal processing chips; feedback; harmonics; high-pass filters; power convertors; transfer functions; voltage control; DSP; active filter; control system design; current source power convertors; digital control; feedback; harmonic current; harmonic voltages; high pass filter; parallel resonance; reference signals; transfer function; voltage control; Active filters; Control systems; Digital signal processing; Feedback; Power harmonic filters; Power system harmonics; Reactive power; Resonance; Transfer functions; Voltage control;
Conference_Titel :
Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-0471-3
DOI :
10.1109/PCCON.1993.264184