TY - GEN
T1 - Accurate open-loop impedance model of single-phase voltage source inverter (vsi) considering the dead-Time effects
AU - Zhang, Mengfan
AU - Yang, Dongsheng
AU - Wang, Xiongfei
PY - 2019/6
Y1 - 2019/6
N2 - The impedance-based approach has been widely adopted to analyze converter-grid interactions. The dead-Time have a significant impact on the output impedance of the voltage source inverter (VSI), which will further affect the stability of the grid-connected VSI. The dead-Time can be elaborated as a nonlinear block, which highly depends on the output current. Moreover, the current ripple also has an impact on the dead-Time effect especially in light load condition, which is usually overlooked in previous work. This paper presents an accurate analytical model to characterize the dead-Time effect considering current ripple, which is established based on the double input describing function (DIDF). Both the simulation and experimental results confirm the accuracy of the proposed impedance model considering the dead-Time effects.
AB - The impedance-based approach has been widely adopted to analyze converter-grid interactions. The dead-Time have a significant impact on the output impedance of the voltage source inverter (VSI), which will further affect the stability of the grid-connected VSI. The dead-Time can be elaborated as a nonlinear block, which highly depends on the output current. Moreover, the current ripple also has an impact on the dead-Time effect especially in light load condition, which is usually overlooked in previous work. This paper presents an accurate analytical model to characterize the dead-Time effect considering current ripple, which is established based on the double input describing function (DIDF). Both the simulation and experimental results confirm the accuracy of the proposed impedance model considering the dead-Time effects.
KW - Dead-Time
KW - Double input describing function
KW - Impedance model
KW - Voltage source inverter
UR - http://www.scopus.com/inward/record.url?scp=85070194076&partnerID=8YFLogxK
U2 - 10.1109/COMPEL.2019.8769666
DO - 10.1109/COMPEL.2019.8769666
M3 - Article in proceeding
T3 - IEEE Workshop on Control and Modeling for Power Electronics (COMPEL)
BT - Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
PB - IEEE Press
T2 - 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
Y2 - 17 June 2019 through 20 June 2019
ER -