Real-Time Control of an IPMSM Using Model Order Reduction

Mehrnaz Farzam Far (Corresponding Author), Floran Martin, Anouar Belachen, Paavo Rasilo, Hafiz Asad Ali Awan

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)


In the control of electric drives, inaccurate estimation of the motor parameters affects the robustness of the control. This effect is observed particularly when the linear lumped parameter-based models are employed to represent a machine composed of nonlinear magnetic materials. Finite-element (FE) models consider the material nonlinearity accurately. However, implementing these models in a real-time system is challenging due to the computational burden. In this article, we propose a fast-dynamic model, based on a model order reduction method, to control a permanent magnet synchronous machine in a wide range of speed. The stator currents in the rotor frame of reference are given as inputs to a reduced FE model, which computes the nodal values of the magnetic vector potential and thereafter the flux linkages. A discrete-time model is used to control the rotor speed and the stator current components. Experiments on a 2.2 kW interior permanent magnet synchronous machine verify the viability of the proposed model.
Original languageEnglish
Article number9007620
Pages (from-to)2005-2014
JournalIEEE Transactions on Industrial Electronics
Issue number3
Early online date2020
Publication statusPublished - Mar 2021
MoE publication typeA1 Journal article-refereed


  • electrical machine
  • interior permanent magnet
  • model order reduction
  • Orthogonal interpolation method
  • real-time control
  • rotor frame of reference
  • singular value decomposition


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