In grid-connected renewable energy generation systems, it is convenient to synchronize the grid voltages with the current provided by the inverter; beside, in three-phase systems, also the inverter phases sequence must coincide with that of the grid. To this aim, the components of the grid voltage phasor, referred to a fixed reference frame, have to be calculated, starting by the measure of two line-to-line grid voltages. The paper proposes a suitable PLL filter allowing an accurate tracking of the grid voltages components, even if voltage harmonics and unbalanced grid voltages are present. ©2008 IEEE.
Bellini, A., Bifaretti, S., Iacovone, V. (2008). Digital filter suitable to connect renewable energy generation systems to the grid. In SPEEDAM 2008 - International Symposium on Power Electronics, Electrical Drives, Automation and Motion (pp.1531-1536) [10.1109/SPEEDHAM.2008.4581254].
Digital filter suitable to connect renewable energy generation systems to the grid
BELLINI, ARMANDO;BIFARETTI, STEFANO;
2008-06-01
Abstract
In grid-connected renewable energy generation systems, it is convenient to synchronize the grid voltages with the current provided by the inverter; beside, in three-phase systems, also the inverter phases sequence must coincide with that of the grid. To this aim, the components of the grid voltage phasor, referred to a fixed reference frame, have to be calculated, starting by the measure of two line-to-line grid voltages. The paper proposes a suitable PLL filter allowing an accurate tracking of the grid voltages components, even if voltage harmonics and unbalanced grid voltages are present. ©2008 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
