Open AccessPermanent magnet synchronous machine demagnetisation prevention and torque estimation control considering rotor temperature
Author(s) -
Uršič Luka,
Nemec Mitja
Publication year - 2019
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2018.6162
Subject(s) - magnet , torque , observer (physics) , rotor (electric) , control theory (sociology) , computer science , automotive engineering , mechanical engineering , control (management) , engineering , physics , artificial intelligence , quantum mechanics , thermodynamics
The article presents complete permanent magnet management solution for a PMSM drive. The temperature of permanent magnets is obtained with a modified flux observer. With this available data, more precise torque estimation is possible. Furthermore the temperature information along with machine currents is fed to full demagnetisation model of permanent magnets in order to obtain their state. This information is then used to limit the applied reverse field in order to prevent the demagnetisation. The algorithm has been tested with simulations as well experimentally and the results show successful prevention of demagnetisation.