TY - JOUR
T1 - A New Single-Phase High Step-Up Active-Switched Quasi Z-Source NNPC Inverter With Common Ground Feature
AU - Shamouei-milan, Milad
AU - Asgarnia, Reza
AU - Marangalu, Milad Ghavipanjeh
AU - Monfared, Kourosh Khalaj
AU - Neyshabouri, Yousef
AU - Vahedi, Hani
PY - 2024
Y1 - 2024
N2 - Quasi-Z source (qZS) multilevel inverters have become popular in sustainable energy systems, particularly in photovoltaic (PV) systems. This study proposes a qZS five-level nested neutral point clamped (5L-NNPC) inverter, benefiting from continuous input current, high voltage gain, and insignificant voltage stress across semiconductors. The proposed topology provides a common ground between the input sources and the inverter's DC link, thus entirely eliminating leakage current, making it a suitable candidate for PV applications. Moreover, model predictive control (MPC) is employed to regulate the voltages of flying capacitors and the output current of the 5L-NNPC inverter. The study also includes analyses of steady-state performance, circuit design, efficiency, and control considerations. Finally, experimental results are presented to validate the converter's performance.
AB - Quasi-Z source (qZS) multilevel inverters have become popular in sustainable energy systems, particularly in photovoltaic (PV) systems. This study proposes a qZS five-level nested neutral point clamped (5L-NNPC) inverter, benefiting from continuous input current, high voltage gain, and insignificant voltage stress across semiconductors. The proposed topology provides a common ground between the input sources and the inverter's DC link, thus entirely eliminating leakage current, making it a suitable candidate for PV applications. Moreover, model predictive control (MPC) is employed to regulate the voltages of flying capacitors and the output current of the 5L-NNPC inverter. The study also includes analyses of steady-state performance, circuit design, efficiency, and control considerations. Finally, experimental results are presented to validate the converter's performance.
KW - Five-level nested neutral point clamped
KW - model predictive control
KW - quasi Z-source (qZS)
U2 - 10.1109/OJPEL.2024.3417277
DO - 10.1109/OJPEL.2024.3417277
M3 - Article
SN - 2644-1314
VL - 5
SP - 1002
EP - 1013
JO - IEEE Open Journal of Power Electronics
JF - IEEE Open Journal of Power Electronics
ER -