TY - GEN
T1 - Virtual Voltage Vector Based Predictive Control of High Performance Modified Quasi-Z-Source Inverter with the Aim of Constant Common-Mode Voltage
AU - Akbari, Majid
AU - Davari, S. Alireza
AU - Ghandehari, Reza
AU - Garsia, Cristian
AU - Rodriguez, Jose
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/2/2
Y1 - 2021/2/2
N2 - Removal of the transformer from quasi-Z-source inverters (q-ZSI) in photovoltaic systems creates an oscillating common-mode voltage (CMV) on the parasitic capacitors. Fluctuations in this voltage cause leakage current to flow in the system. Due to the shoot-through (ST) state in q-ZSIs, the CMV fluctuations are also higher than those of the conventional voltage source converters. In this paper, the predictive control method and the concept of virtual voltage vectors (VVVs) and their combination with the odd PWM (OPWM) method are proposed for elimination of the oscillation of the common state voltage in the q-ZSI. In the proposed method, the CMV fluctuations are kept constant for a complete switching period. In addition, the total harmonic distortion (THD) of the output current of the converter decreases, and consequently, the converter's operating range and performance increase. By simulating a two-level q-ZSI, the performance of the proposed method are proved.
AB - Removal of the transformer from quasi-Z-source inverters (q-ZSI) in photovoltaic systems creates an oscillating common-mode voltage (CMV) on the parasitic capacitors. Fluctuations in this voltage cause leakage current to flow in the system. Due to the shoot-through (ST) state in q-ZSIs, the CMV fluctuations are also higher than those of the conventional voltage source converters. In this paper, the predictive control method and the concept of virtual voltage vectors (VVVs) and their combination with the odd PWM (OPWM) method are proposed for elimination of the oscillation of the common state voltage in the q-ZSI. In the proposed method, the CMV fluctuations are kept constant for a complete switching period. In addition, the total harmonic distortion (THD) of the output current of the converter decreases, and consequently, the converter's operating range and performance increase. By simulating a two-level q-ZSI, the performance of the proposed method are proved.
KW - Common-Mode Voltage (CMV)
KW - Discrete Virtual Odd PWM in q-ZSI (DVO-q-ZSI)
KW - Finite Control Set Model Predictive Control (FCS-MPC)
KW - quasi- Z- Source Inverter (q-ZSI)
KW - Virtual Voltage Vectors (VVVs)
UR - http://www.scopus.com/inward/record.url?scp=85105273644&partnerID=8YFLogxK
U2 - 10.1109/PEDSTC52094.2021.9405899
DO - 10.1109/PEDSTC52094.2021.9405899
M3 - Conference contribution
AN - SCOPUS:85105273644
T3 - 2021 12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021
BT - 2021 12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021
Y2 - 2 February 2021 through 4 February 2021
ER -
