TY - GEN
T1 - Modeling, analysis, and implementation of a photovoltaic grid-tie inverter system
AU - Chen, Chien Liang
AU - Lai, Jih Sheng
AU - Martin, Daniel
AU - Wu, Kuan Hung
AU - Ribeiro, Pedro
AU - Andrade, Elvey
AU - Liu, Chuang
AU - Lee, Yuang Shung
AU - Yang, Zong Ying
PY - 2012
Y1 - 2012
N2 - Modeling of a complete photovoltaic (PV) inverter system poses a significant challenge because it involves different time-scaled dynamics including filter elements, fast current loop, voltage loop, maximum power point tracking (MPPT) loop, and response of the energy source. This paper intends to utilize the state-space modeling approach for stability analysis for a grid-tie PV inverter system by eigenvalue evaluation with different irradiation levels, PV output voltages, voltage-loop gains and current-loop gains. The stability analysis can not only show more insight of the two-loop interaction with current-loop gain variation, but also show the stability trend due to the change of both the source voltage and the source impedance with the input PV voltage change, which are quite difficult to detect with conventional single-variable transfer function analysis. The controller based on state-space modeling and analysis has been designed and implemented. Experimental results are used to verify the stability trend predicted in the model.
AB - Modeling of a complete photovoltaic (PV) inverter system poses a significant challenge because it involves different time-scaled dynamics including filter elements, fast current loop, voltage loop, maximum power point tracking (MPPT) loop, and response of the energy source. This paper intends to utilize the state-space modeling approach for stability analysis for a grid-tie PV inverter system by eigenvalue evaluation with different irradiation levels, PV output voltages, voltage-loop gains and current-loop gains. The stability analysis can not only show more insight of the two-loop interaction with current-loop gain variation, but also show the stability trend due to the change of both the source voltage and the source impedance with the input PV voltage change, which are quite difficult to detect with conventional single-variable transfer function analysis. The controller based on state-space modeling and analysis has been designed and implemented. Experimental results are used to verify the stability trend predicted in the model.
UR - http://www.scopus.com/inward/record.url?scp=84860203805&partnerID=8YFLogxK
U2 - 10.1109/APEC.2012.6166018
DO - 10.1109/APEC.2012.6166018
M3 - Conference contribution
AN - SCOPUS:84860203805
SN - 9781457712159
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1494
EP - 1501
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 -
