TY - JOUR
T1 - Comprehensive Modeling of Single-Phase Quasi-Z-Source Photovoltaic Inverter to Investigate Low-Frequency Voltage and Current Ripple
AU - Liu, Yushan
AU - Ge, Baoming
AU - Abu-Rub, Haitham
AU - Sun, Dongsen
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - The second harmonic (2ω) power ripple of single-phase quasi-Z-source (qZS) photovoltaic (PV) inverter highly affects the whole system's design and performance. The topology's 2ω ripple model is very important to analyze qZS PV inverter's 2ω voltage and current ripple. The existing models did not consider the PV-panel dynamic and terminal capacitors, which causes the theoretical results apart from the truth. In this paper, a comprehensive modeling for single-phase qZS-PV inverter is proposed, where the 2ω ripple model of the qZS-PV inverter system with a real PV source is established and discussed without and with a PV terminal capacitor. The influences from qZS inductance and capacitance, and PV-panel terminal capacitance to the 2ω voltage and current ripple are investigated using the built model. The system parameter design method is proposed to mitigate this ripple. Simulation and experimental results validate the proposed 2ω ripple model and parameter design method.
AB - The second harmonic (2ω) power ripple of single-phase quasi-Z-source (qZS) photovoltaic (PV) inverter highly affects the whole system's design and performance. The topology's 2ω ripple model is very important to analyze qZS PV inverter's 2ω voltage and current ripple. The existing models did not consider the PV-panel dynamic and terminal capacitors, which causes the theoretical results apart from the truth. In this paper, a comprehensive modeling for single-phase qZS-PV inverter is proposed, where the 2ω ripple model of the qZS-PV inverter system with a real PV source is established and discussed without and with a PV terminal capacitor. The influences from qZS inductance and capacitance, and PV-panel terminal capacitance to the 2ω voltage and current ripple are investigated using the built model. The system parameter design method is proposed to mitigate this ripple. Simulation and experimental results validate the proposed 2ω ripple model and parameter design method.
KW - AC small-signal model
KW - low-frequency (LF) ripple
KW - photovoltaic (PV) power system
KW - quasi-Z source inverter (Qzsi)
UR - http://www.scopus.com/inward/record.url?scp=84930226677&partnerID=8YFLogxK
U2 - 10.1109/TIE.2014.2384472
DO - 10.1109/TIE.2014.2384472
M3 - Article
AN - SCOPUS:84930226677
SN - 0278-0046
VL - 62
SP - 4194
EP - 4202
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 7
M1 - 6994221
ER -