TY - JOUR
T1 - Online Detection of Rotor Eccentricity and Demagnetization Faults in PMSMs Based on Hall-Effect Field Sensor Measurements
AU - Park, Yonghyun
AU - Fernandez, Daniel
AU - Lee, Sang Bin
AU - Hyun, Doosoo
AU - Jeong, Myung
AU - Kommuri, Suneel Kumar
AU - Cho, Changhee
AU - Diaz Reigosa, David
AU - Briz, Fernando
N1 - Publisher Copyright:
© 1972-2012 IEEE.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - Rotor eccentricity and local demagnetization in permanent magnet synchronous motors (PMSMs) increase unbalanced magnetic pull and motor vibration resulting in accelerated aging of motor components. If the asymmetry in the rotor remains undetected, it can increase in severity, and increase the risk of stator-rotor contact, which causes forced outage of the motor and driven process. Detection of PMSM rotor asymmetry currently relies on offline testing and online vibration/current spectrum analysis. However, they are inconvenient or cannot provide reliable detection of rotor faults for all PMSM designs. In this paper, the feasibility of using the signals from analog Hall-effect field sensors for detecting eccentricity and local demagnetization is investigated. It is shown that Hall sensors present in machines for motion control can be used for directly measuring the variation in the flux inside the motor due to rotor magnetic asymmetry with minimal hardware modifications. Three-dimensional finite-element analysis and experimental results performed on an interior PMSM show that the proposed method can provide sensitive and reliable detection of dynamic/mixed eccentricity and local PM demagnetization.
AB - Rotor eccentricity and local demagnetization in permanent magnet synchronous motors (PMSMs) increase unbalanced magnetic pull and motor vibration resulting in accelerated aging of motor components. If the asymmetry in the rotor remains undetected, it can increase in severity, and increase the risk of stator-rotor contact, which causes forced outage of the motor and driven process. Detection of PMSM rotor asymmetry currently relies on offline testing and online vibration/current spectrum analysis. However, they are inconvenient or cannot provide reliable detection of rotor faults for all PMSM designs. In this paper, the feasibility of using the signals from analog Hall-effect field sensors for detecting eccentricity and local demagnetization is investigated. It is shown that Hall sensors present in machines for motion control can be used for directly measuring the variation in the flux inside the motor due to rotor magnetic asymmetry with minimal hardware modifications. Three-dimensional finite-element analysis and experimental results performed on an interior PMSM show that the proposed method can provide sensitive and reliable detection of dynamic/mixed eccentricity and local PM demagnetization.
KW - Condition monitoring
KW - Hall-effect field sensor
KW - demagnetization
KW - finite-element analysis (FEA)
KW - permanent magnet synchronous motor (PMSM)
KW - rotor eccentricity
UR - http://www.scopus.com/inward/record.url?scp=85058883868&partnerID=8YFLogxK
U2 - 10.1109/TIA.2018.2886772
DO - 10.1109/TIA.2018.2886772
M3 - Article
AN - SCOPUS:85058883868
SN - 0093-9994
VL - 55
SP - 2499
EP - 2509
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 3
M1 - 8576624
ER -