TY - JOUR
T1 - Diagnosis and Resilient Control for Multiple Sensor Faults in Cascaded H-Bridge Multilevel Converters
AU - Xie, Dong
AU - Lin, Chunxu
AU - Zhang, Yi
AU - Sangwongwanich, Ariya
AU - Ge, Xinglai
AU - Feng, Xiaoyun
AU - Wang, Huai
PY - 2023/9/1
Y1 - 2023/9/1
N2 - This article proposes a unified solution for single or multiple sensor faults in the cascaded H-bridge multilevel converters (CHBMCs), including the identification of fault location and fault types, and resilient control. The original states and sensor fault information are decoupled completely and estimated simultaneously by a reduced-order observer. The accuracy and robustness of the observed variables are further enhanced by the error compensation and parameter estimation. Feature extraction from the estimated fault information identifies the location and specific types of faults. Afterward, the resilient control against sensor faults is seamlessly performed by using the original states to substitute the flawed sensor data. The experimental findings from a CHBMC prototype confirm the efficacy of the proposed approach for various scenarios of sensor faults.
AB - This article proposes a unified solution for single or multiple sensor faults in the cascaded H-bridge multilevel converters (CHBMCs), including the identification of fault location and fault types, and resilient control. The original states and sensor fault information are decoupled completely and estimated simultaneously by a reduced-order observer. The accuracy and robustness of the observed variables are further enhanced by the error compensation and parameter estimation. Feature extraction from the estimated fault information identifies the location and specific types of faults. Afterward, the resilient control against sensor faults is seamlessly performed by using the original states to substitute the flawed sensor data. The experimental findings from a CHBMC prototype confirm the efficacy of the proposed approach for various scenarios of sensor faults.
KW - Circuit faults
KW - Noise measurement
KW - Observers
KW - Power measurement
KW - Semiconductor device measurement
KW - Stress measurement
KW - Voltage measurement
KW - cascaded H-bridge multilevel converters (CHBMCs)
KW - fault estimation
KW - multiple sensor faults
KW - reduced-order observer
KW - resilient control
KW - Cascaded H-bridge multilevel converters (CHBMCs)
UR - http://www.scopus.com/inward/record.url?scp=85161028331&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2023.3279907
DO - 10.1109/TPEL.2023.3279907
M3 - Journal article
SN - 1941-0107
VL - 38
SP - 11435
EP - 11450
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 9
M1 - 10135130
ER -