TY - GEN
T1 - Modeling and stability analysis of an active filter for DC current compensation
AU - Buticchi, Giampaolo
AU - Consolini, Luca
AU - Lorenzani, Emilio
PY - 2011
Y1 - 2011
N2 - The widespread use of power converters and nonlinear loads connected to the grid have caused the emergence of problems regarding the power quality. Among different kind of non-linear distortion, there is the issue of the DC current component. In fact, a DC current component flowing in the grid transformers has various detrimental effects, i.e. increased harmonic distortion, increased power losses, and possible damage due to consequent overheating. This paper proposes a non-linear sensor and a compensator system that act as an active filter to remove the DC current component flowing in the power lines. In the first part, the strategy is outlined and then the stability issue is addressed by means of a simplified model. Simulation results confirmed that the simplified model closely approximates the real system. An approximated analysis of stability is also presented. Finally we present some experimental results that shows the effectiveness of the proposed solution.
AB - The widespread use of power converters and nonlinear loads connected to the grid have caused the emergence of problems regarding the power quality. Among different kind of non-linear distortion, there is the issue of the DC current component. In fact, a DC current component flowing in the grid transformers has various detrimental effects, i.e. increased harmonic distortion, increased power losses, and possible damage due to consequent overheating. This paper proposes a non-linear sensor and a compensator system that act as an active filter to remove the DC current component flowing in the power lines. In the first part, the strategy is outlined and then the stability issue is addressed by means of a simplified model. Simulation results confirmed that the simplified model closely approximates the real system. An approximated analysis of stability is also presented. Finally we present some experimental results that shows the effectiveness of the proposed solution.
UR - http://www.scopus.com/inward/record.url?scp=84860669042&partnerID=8YFLogxK
U2 - 10.1109/CDC.2011.6161159
DO - 10.1109/CDC.2011.6161159
M3 - Conference contribution
AN - SCOPUS:84860669042
SN - 9781612848006
T3 - Proceedings of the IEEE Conference on Decision and Control
SP - 3068
EP - 3073
BT - 2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 50th IEEE Conference on Decision and Control and European Control Conference, CDC-ECC 2011
Y2 - 12 December 2011 through 15 December 2011
ER -