TY - JOUR
A2 - Na, Jing
AU - Zhang, Yang
AU - Cheng, Zhun
AU - Chen, Qing
AU - Li, Qingmei
PY - 2021
DA - 2021/07/02
TI - An Enhanced Half-Quasi-Z-Source Inverter for Wind Energy Conversion System with D-PMSG
SP - 9962115
VL - 2021
AB - To solve the problem of the traditional quasi-Z-source inverters with low voltage gain, an enhanced half-quasi-Z-source inverter (E-HQZSI) is proposed and applied to direct-drive permanent-magnet wind power generation systems in this paper. The expression of the boosting factor is deduced, which shows that E-HQZSI has higher voltage gain compared with the QZSI and HQZSI. However, the higher voltage gain of the E-HQZSI will lead to the large distortion of the generator stator current necessarily. In this paper, a periodic shoot-through duty ratio control scheme is proposed to reduce the stator current harmonics for E-HQZSI. According to the change rule of the single-phase stator current, the shoot-through duty ratio is compromised to make that the three-phase stator currents are as close as possible to the sine wave. Finally, the correctness of the theoretical analysis is verified by simulation and experiment.
SN - 1076-2787
UR - https://doi.org/10.1155/2021/9962115
DO - 10.1155/2021/9962115
JF - Complexity
PB - Hindawi
KW -
ER -