TY - GEN
T1 - Modeling and SVPWM control of quasi-Z-source inverter
AU - Liu, Yushan
AU - Ge, Baoming
AU - Ferreira, Fernando J.T.E.
AU - De Almeida, Anibal T.
AU - Abu-Rub, Haitham
PY - 2011
Y1 - 2011
N2 - In today's renewable energy power generation systems, inverters have become key devices connected between energy sources and power grids. The newly presented quasi-Z-source inverter (qZSI) has the unique advantages of boosting DC bus voltage without additional boost link, lower component ratings, as well as constant DC input current compared with the traditional Z-source inverter. To better design the control schemes of this novel topology, the small-signal model is deduced using state variables perturbance mathematical analysis. By this model, the voltage-current closed-loop control of shoot-through duty cycle is designed. The space vector PWM (SVPWM) technique is modified to satisfy the particularity of qZSI. Simulation results certify the correctness and effectiveness of the proposed model and control strategies and demonstrate the applicability of qZSI technology to overcome the disturbances from DC link or AC loads in renewable energy power generation systems.
AB - In today's renewable energy power generation systems, inverters have become key devices connected between energy sources and power grids. The newly presented quasi-Z-source inverter (qZSI) has the unique advantages of boosting DC bus voltage without additional boost link, lower component ratings, as well as constant DC input current compared with the traditional Z-source inverter. To better design the control schemes of this novel topology, the small-signal model is deduced using state variables perturbance mathematical analysis. By this model, the voltage-current closed-loop control of shoot-through duty cycle is designed. The space vector PWM (SVPWM) technique is modified to satisfy the particularity of qZSI. Simulation results certify the correctness and effectiveness of the proposed model and control strategies and demonstrate the applicability of qZSI technology to overcome the disturbances from DC link or AC loads in renewable energy power generation systems.
KW - Quasi-Z-source inverter
KW - renewable energy power generation
KW - shoot-through duty cycle
KW - small-signal model
KW - SVPWM control
UR - http://www.scopus.com/inward/record.url?scp=84863251862&partnerID=8YFLogxK
U2 - 10.1109/EPQU.2011.6128914
DO - 10.1109/EPQU.2011.6128914
M3 - Conference contribution
AN - SCOPUS:84863251862
SN - 9781467303798
T3 - Proceeding of the International Conference on Electrical Power Quality and Utilisation, EPQU
SP - 95
EP - 101
BT - 11th International Conference on Electrical Power Quality and Utilisation, EPQU 2011
T2 - 11th International Conference on Electrical Power Quality and Utilisation, EPQU 2011
Y2 - 17 October 2011 through 19 October 2011
ER -