TY - JOUR
T1 - Accurate SM Disturbance Observer-Based Demagnetization Fault Diagnosis With Parameter Mismatch Impacts Eliminated for IPM Motors
AU - Han, Yaofei
AU - Chen, Shaofeng
AU - Gong, Chao
AU - Zhao, Xing
AU - Zhang, Fanggang
AU - Li, Yunwei
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2023/5/1
Y1 - 2023/5/1
N2 - This letter proposes a novel sliding mode (SM) disturbance observer-based technique to diagnose demagnetization fault of interior permanent magnet (IPM) motors with stator parameter mismatch impacts eliminated. First, the IPM motor model incorporating the disturbances caused by the PM demagnetization and stator parameter mismatch is established. Then, an SM disturbance observer is constructed to identify the overall disturbance caused by all parameters, with its stability discussed by using the Lyapunov function. Third, a current-analysis-based method is developed to extract the disturbance only caused by flux linkage mismatch from the overall disturbance. Third, the extracted disturbance is adopted to calculate the real flux linkage, achieving demagnetization fault judgment and demagnetization degree calculation. Finally, experiment is conducted on two IPM motors to validate the proposed flux linkage estimation and fault diagnosis methods.
AB - This letter proposes a novel sliding mode (SM) disturbance observer-based technique to diagnose demagnetization fault of interior permanent magnet (IPM) motors with stator parameter mismatch impacts eliminated. First, the IPM motor model incorporating the disturbances caused by the PM demagnetization and stator parameter mismatch is established. Then, an SM disturbance observer is constructed to identify the overall disturbance caused by all parameters, with its stability discussed by using the Lyapunov function. Third, a current-analysis-based method is developed to extract the disturbance only caused by flux linkage mismatch from the overall disturbance. Third, the extracted disturbance is adopted to calculate the real flux linkage, achieving demagnetization fault judgment and demagnetization degree calculation. Finally, experiment is conducted on two IPM motors to validate the proposed flux linkage estimation and fault diagnosis methods.
KW - Demagnetization fault diagnosis
KW - disturbance
KW - interior permanent magnet (IPM) motor
KW - parameter mismatch
KW - sliding mode (SM) observer
UR - http://www.scopus.com/inward/record.url?scp=85149412461&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2023.3245052
DO - 10.1109/TPEL.2023.3245052
M3 - 文章
AN - SCOPUS:85149412461
SN - 0885-8993
VL - 38
SP - 5706
EP - 5710
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 5
ER -