TY - GEN
T1 - Series Harmonic Voltage Cancellator for Mitigating Effect of Grid Impedance on the Stability of Microgrids
AU - Lai, Chun-Tak
AU - Chung, Henry Shu-Hung
AU - Wu, Weimin
PY - 2019/9
Y1 - 2019/9
N2 - A series harmonic voltage cancellator (SHVC) that can mitigate the effect of grid impedance on the stability of microgrid having a plurality of grid-connected inverters (GCIs) is proposed. The concept is based on using a series harmonic voltage source to counteract the voltage across the grid impedance, so that the equivalent grid impedance observed by the inverters is reduced. As the SHVC handles harmonic power only, its volt-ampere (VA) rating is significantly lower than the power rating of the entire distributed generation (DG) system. It is realized by an inverter with fixed-frequency predictive control and wide bandwidth. A SHVC has been built and evaluated on a system with two GCIs. Experimental results are favourably compared with theoretical predictions.
AB - A series harmonic voltage cancellator (SHVC) that can mitigate the effect of grid impedance on the stability of microgrid having a plurality of grid-connected inverters (GCIs) is proposed. The concept is based on using a series harmonic voltage source to counteract the voltage across the grid impedance, so that the equivalent grid impedance observed by the inverters is reduced. As the SHVC handles harmonic power only, its volt-ampere (VA) rating is significantly lower than the power rating of the entire distributed generation (DG) system. It is realized by an inverter with fixed-frequency predictive control and wide bandwidth. A SHVC has been built and evaluated on a system with two GCIs. Experimental results are favourably compared with theoretical predictions.
UR - https://www.scopus.com/pages/publications/85076723007
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85076723007&origin=recordpage
U2 - 10.1109/ECCE.2019.8912756
DO - 10.1109/ECCE.2019.8912756
M3 - RGC 32 - Refereed conference paper (with host publication)
T3 - IEEE Energy Conversion Congress and Exposition, ECCE
SP - 4447
EP - 4454
BT - The ECCE 2019 proceedings
PB - IEEE
T2 - 11th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2019)
Y2 - 29 September 2019 through 3 October 2019
ER -