Title :
Simplified control strategy for hybrid active filters
Author :
Líbano, Fausto B. ; Cobos, José A. ; Uceda, Javier
Author_Institution :
Div. de Ingenieria Electron., Univ. Politecnica de Madrid, Spain
Abstract :
Nowadays, hybrid filtering is an important alternative to improve line performance when supplying high-power nonlinear loads. This paper presents a simple and low cost control strategy for hybrid filter as an alternative to other more complex algorithms, in some specific applications. The proposed control strategy is recommended for a utility interface with three-phase diode bridge rectifier front-end due to its high displacement power factor. It has been tested by simulations (both steady-state and transient analysis) and by experimental verification, where good results are obtained. It can be seen that using this control strategy, acceptable harmonic levels according to IEEE-519 standard are obtained. Also a different connection of the passive filter is experimentally verified, allowing the reduction of passive filter capacitors
Keywords :
AC-DC power convertors; IEEE standards; active filters; bridge circuits; control system analysis; harmonic distortion; power factor correction; power filters; power system harmonics; rectifying circuits; voltage control; IEEE-519 standard; complex algorithms; control strategy simplification; harmonic levels; hybrid active power filters; nonlinear loads; passive filter capacitors; power conversion; power factor; steady-state analysis; three-phase diode bridge rectifier; transient analysis; Active filters; Bridges; Costs; Diodes; Displacement control; Filtering; Passive filters; Reactive power; Rectifiers; Testing;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616884
