Comprehensive Modeling of Single-Phase Quasi-Z-Source Photovoltaic Inverter to Investigate Low-Frequency Voltage and Current Ripple uri icon

abstract

  • 1982-2012 IEEE. The second harmonic (2) power ripple of single-phase quasi-Z-source (qZS) photovoltaic (PV) inverter highly affects the whole system's design and performance. The topology's 2 ripple model is very important to analyze qZS PV inverter's 2 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 2 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 2 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 2 ripple model and parameter design method.

published proceedings

  • IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

author list (cited authors)

  • Liu, Y., Ge, B., Abu-Rub, H., & Sun, D.

citation count

  • 88

complete list of authors

  • Liu, Yushan||Ge, Baoming||Abu-Rub, Haitham||Sun, Dongsen

publication date

  • July 2015