Title :
Practical modifications of a repetitive-based controller aimed to compensate 6ℓ ± 1 harmonics
Author :
Escobar, G. ; Torres-Olguin, R.E. ; Valdez, A.A. ; Martinez-Montejano, M.F. ; Hernandez-Briones, P.G.
Author_Institution :
IPICYT, Lab. of Proc. & Quality of Energy, San Luis Potosi
Abstract :
In this paper, a modified repetitive-based scheme for the compensation of 6lscr plusmn 1 harmonic components is proposed. The proposed modifications are aimed to alleviate the phase shift caused by, first, the introduction of the damping gain, which were introduced to limit the infinite gain produce by the controller, and, second, the introduction of auxiliary low pass filters, which were intended to restrict the bandwidth of the controller and to reinforce the stability when the controller is installed in a closed-loop system. Experimental results on a digital implementation are provided to illustrate the benefits of the modified scheme.
Keywords :
closed loop systems; low-pass filters; power filters; stability; auxiliary low pass filter; closed-loop system; harmonic compensation; phase shift; repetitive-based controller; stability; Bandwidth; Control systems; Damping; Delay effects; Delay lines; Frequency; Negative feedback; Power engineering and energy; Resonance; Stability;
Conference_Titel :
Power Electronics Congress, 2008. CIEP 2008. 11th IEEE International
Conference_Location :
Morelos
Print_ISBN :
978-1-4244-2718-5
Electronic_ISBN :
978-1-4244-2719-2
DOI :
10.1109/CIEP.2008.4653815
