DocumentCode :
2418535
Title :
Repetitive control of an active filter under varying network frequency: Power factor correction
Author :
Ramos, Germán A. ; Olm, Josep M. ; Costa-Castelló, Ramon
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Nac. de Colombia, Bogotá, Colombia
fYear :
2011
fDate :
1-4 Oct. 2011
Firstpage :
1
Lastpage :
5
Abstract :
This work deals with the design and analysis of a controller for a shunt active power filter. The design is based on combined feedforward and feedback actions, the last using repetitive control and aimed at obtaining a good closed-loop performance in spite of the possible frequency variations that may occur in the electrical network. These changes affect the performance of the controller which, for the active filter application, can be seen as a degradation of the power factor in case of reactive loads. To overcome this problem a compensation technique consisting of adapting the sampling rate of the controller according to the network frequency variation is proposed. Experimental results indicate good performance of the closed-loop system preserving a unitary power factor for different network frequencies.
Keywords :
active filters; closed loop systems; compensation; control system synthesis; feedback; feedforward; power factor correction; power system control; sampling methods; closed-loop performance; closed-loop system; compensation technique; controller analysis; controller design; electrical network; feedback action; feedforward action; network frequency variation; power factor correction; reactive load; repetitive control; sampling rate; shunt active power filter; Capacitors; Control systems; Feedforward neural networks; Frequency control; Reactive power; Stability analysis; Steady-state;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Robotics Symposium, 2011 IEEE IX Latin American and IEEE Colombian Conference on Automatic Control and Industry Applications (LARC)
Conference_Location :
Bogota
Print_ISBN :
978-1-4577-1689-8
Type :
conf
DOI :
10.1109/LARC.2011.6086827
Filename :
6086827
Link To Document :
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