TY - GEN
T1 - Application of high-sampling-frequency control in low-switching-frequency Lcl-filtered system
AU - Teng, Guofei
AU - Xiao, Guochun
AU - Zhang, Zhibo
AU - Liu, Jinjun
PY - 2013
Y1 - 2013
N2 - In common LCL-filtered grid connected inverters, the sampling frequency will decrease in a low-switching frequency system, which will cause problems of current control. On one hand, the control delay will seriously influence the frequency response of system. And on the other, the effectiveness of active damping for LCL system will be challenged. To solve these problems, a method of applying high sampling frequency in the low-switching-frequency system is introduced in this paper. As high sampling frequency employed, control delay is reduced, and the effect on the design from low discrete frequency is minimized. In a 3kHz- switching-frequency LCL-filtered system with active damping and repetitive control involved, the controllers are design under 15kHz sampling frequency. Simulation and experimental results confirm the validity of the proposed method.
AB - In common LCL-filtered grid connected inverters, the sampling frequency will decrease in a low-switching frequency system, which will cause problems of current control. On one hand, the control delay will seriously influence the frequency response of system. And on the other, the effectiveness of active damping for LCL system will be challenged. To solve these problems, a method of applying high sampling frequency in the low-switching-frequency system is introduced in this paper. As high sampling frequency employed, control delay is reduced, and the effect on the design from low discrete frequency is minimized. In a 3kHz- switching-frequency LCL-filtered system with active damping and repetitive control involved, the controllers are design under 15kHz sampling frequency. Simulation and experimental results confirm the validity of the proposed method.
KW - active damping
KW - Grid-connected inverter
KW - LCL filter
KW - notch filter
KW - sampling
UR - https://www.scopus.com/pages/publications/84883674275
U2 - 10.1109/ECCE-Asia.2013.6579154
DO - 10.1109/ECCE-Asia.2013.6579154
M3 - 会议稿件
AN - SCOPUS:84883674275
SN - 9781479904822
T3 - 2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
SP - 566
EP - 570
BT - 2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
T2 - 2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
Y2 - 3 June 2013 through 6 June 2013
ER -