Title :
A practical 50 kVA active harmonic filter with near instant correction and useful transient response
Author_Institution :
Preston Consulting Ltd., Christchurch, New Zealand
Abstract :
A commercial active harmonic filter has been developed for parallel connection to a 3 phase, 415 V, 4 wire system. This paper presents an overview of the control methodology and three-level power stage together with operational results. An hysteretic or sliding mode type control is used to force the average line current to be sinusoidal. This results in robust, highspeed correction and a favourable transient response to load switching. The three-level power stage provides greater power bandwidth, smaller main inductors and lower capacitor currents.
Keywords :
active filters; magnetic hysteresis; power harmonic filters; transient response; variable structure systems; 415 V; 50 kVA; active harmonic filter; capacitor currents; control methodology; hysteretic control; load switching; power bandwidth; sliding mode type control; smaller main inductors; three-level power stage; transient response; Bandwidth; Capacitors; Force control; Harmonic filters; Hysteresis; Inductors; Robustness; Sliding mode control; Transient response; Wire;
Conference_Titel :
Power Electronic Drives and Energy Systems for Industrial Growth, 1998. Proceedings. 1998 International Conference on
Print_ISBN :
0-7803-4879-6
DOI :
10.1109/PEDES.1998.1329994
