TY - CONF
T1 - Suppressing the effect of the DC-link voltage ripple on the current control of a sliding-mode controlled microinverter
AU - Lopez-Santos, O.
AU - Garcia, G.
AU - Martinez-Salamero, L.
AU - Cortes-Torres, L.
PY - 2016/2/4
Y1 - 2016/2/4
N2 - © 2015 IEEE. One of the more relevant aspects to improve the two-stage microinverter architecture consists on reduce the size of the required decoupling capacitor in order to enable the use of technologies with a greater service life such as thin-film capacitors. However, the diminution of the capacitor size introduces a deterioration of the power quality level at the grid side because the ripple component of the DC-link voltage accentuates on the current control loop. This paper models the effect of the ripple component of the DC-link voltage of a sliding-mode controlled two-stage solar microinverter and proposes a feed-forward compensation method reducing the Total Harmonic Distortion (THD) of the output current. The proposed approach estimates and cancels the double grid frequency component of the DC-link voltage measurement. The effectiveness of the proposed method is validated using several simulation results and comparisons.
AB - © 2015 IEEE. One of the more relevant aspects to improve the two-stage microinverter architecture consists on reduce the size of the required decoupling capacitor in order to enable the use of technologies with a greater service life such as thin-film capacitors. However, the diminution of the capacitor size introduces a deterioration of the power quality level at the grid side because the ripple component of the DC-link voltage accentuates on the current control loop. This paper models the effect of the ripple component of the DC-link voltage of a sliding-mode controlled two-stage solar microinverter and proposes a feed-forward compensation method reducing the Total Harmonic Distortion (THD) of the output current. The proposed approach estimates and cancels the double grid frequency component of the DC-link voltage measurement. The effectiveness of the proposed method is validated using several simulation results and comparisons.
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U2 - 10.1109/Chilecon.2015.7400416
DO - 10.1109/Chilecon.2015.7400416
M3 - Paper
SP - 447
EP - 452
T2 - CHILECON 2015 - 2015 IEEE Chilean Conference on Electrical, Electronics Engineering, Information and Communication Technologies, Proceedings of IEEE Chilecon 2015
Y2 - 4 February 2016
ER -