Real-Time Maximum Magnet Temperature Prediction for Surface-Mounted PMSMs

This article proposes a novel approach to predict the maximum permanent magnet (PM) temperature for surface-mounted PM synchronous machines (SPMSMs). Using the 3-D conduction heat transfer equation, a generic correlation between average and maximum PM temperatures is analytically derived for the fir...

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Bibliographic Details
Published in:IEEE transactions on transportation electrification 2024-12, Vol.10 (4), p.10520-10532
Main Authors: Liang, Dawei, Zhu, Z. Q., Wang, Peng
Format: Article
Language:English
Subjects:
Condition monitoring
Conduction heating
Couplings
Current loss
Eddy current testing
Estimation
Finite element method
Mathematical models
parameter estimation
permanent magnet (PM) temperature
Permanent magnets
rotor flux linkage
Rotors
Stator windings
Stators
surface-mounted PM machine
Synchronous machines
Synchronous motors
Temperature
Temperature distribution
Temperature measurement
thermal management
Thermodynamic properties
Citations: Items that this one cites
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Summary:This article proposes a novel approach to predict the maximum permanent magnet (PM) temperature for surface-mounted PM synchronous machines (SPMSMs). Using the 3-D conduction heat transfer equation, a generic correlation between average and maximum PM temperatures is analytically derived for the first time. It depends on the basic geometric/thermal parameters, the PM eddy current loss, and the stator thermal behavior. Using the average PM temperature obtained by the rotor flux linkage estimation method, the PM loss calculated by the finite element analysis (FEA), and a thermal sensor installed on the stator, the maximum PM temperature can be determined semi-analytically. The contribution of the PM temperature rises caused by the stator thermal state and the rotor PM loss can also be evaluated separately. The proposed method exhibits similar estimation accuracy as the FEA while requiring significantly less computation time. The effectiveness of the proposed method is validated experimentally based on a 12-slot/10-pole SPMSM.
ISSN:2332-7782
2577-4212
2332-7782
DOI:10.1109/TTE.2024.3385296