TY - GEN
T1 - A novel power calculation method for droop-control microgrid systems
AU - Andrade, Elvey Tessaro
AU - Ribeiro, Pedro Eugênio M.J.
AU - Pinto, João Onofre Pereira
AU - Chen, Chien Liang
AU - Lai, Jih Sheng
AU - Kees, Nathan
PY - 2012
Y1 - 2012
N2 - In this paper a new methodology is presented to calculate the average power quickly and accurately for the single-phase paralleled inverters intended to be applied in a droop-control microgrid system. Most existing droop control systems utilize a simple first-order filter to calculate the active and reactive power. The added filter can smooth the calculated results but it tends to hurt the system dynamic response due to a low cut-off frequency that is intended to get enough ripple attenuation. This low frequency pole in the low-pass filter could also introduce system instability under certain load conditions. A new filter calculation methodology is thus proposed to achieve better ripple attenuation with faster response by combining a low-pass filter, a delay, and summation blocks. Both simulation and experiment are used to verify the effectiveness of the proposed power calculation methodology.
AB - In this paper a new methodology is presented to calculate the average power quickly and accurately for the single-phase paralleled inverters intended to be applied in a droop-control microgrid system. Most existing droop control systems utilize a simple first-order filter to calculate the active and reactive power. The added filter can smooth the calculated results but it tends to hurt the system dynamic response due to a low cut-off frequency that is intended to get enough ripple attenuation. This low frequency pole in the low-pass filter could also introduce system instability under certain load conditions. A new filter calculation methodology is thus proposed to achieve better ripple attenuation with faster response by combining a low-pass filter, a delay, and summation blocks. Both simulation and experiment are used to verify the effectiveness of the proposed power calculation methodology.
UR - http://www.scopus.com/inward/record.url?scp=84860148841&partnerID=8YFLogxK
U2 - 10.1109/APEC.2012.6166136
DO - 10.1109/APEC.2012.6166136
M3 - Conference contribution
AN - SCOPUS:84860148841
SN - 9781457712159
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2254
EP - 2258
BT - APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition
T2 - 27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012
Y2 - 5 February 2012 through 9 February 2012
ER -