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Flux-Weakening Control for IPMSM Employing Model Order Reduction

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publication2018 23rd International Conference on Electrical Machines, ICEM 2018
Number of pages7
ISBN (Electronic)9781538624777
Publication statusPublished - 24 Oct 2018
Publication typeA4 Article in a conference publication
EventInternational Conference on Electrical Machines - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018


ConferenceInternational Conference on Electrical Machines


The variation of magnetic parameters due to the magnetic saturation and cross coupling can affect the efficiency and the stability of the control system in electrical machines, especially at high-speed operation. This paper presents an approach independent of the magnetic model parameters to control synchronous motors at the flux-weakening region. In this approach, a model order reduction technique is applied to reduce the finite element model of a synchronous machine. The stator current components and the flux linkage components are the inputs and the outputs of the reduced model, respectively. The reduced model and its inversion are employed to calculate the current reference components from the reference torque. Field oriented control scheme is utilized to implement the overall control system. The proposed control system is validated by means of simulation and experiment on a 2.2 kW permanent magnet synchronous machine.


  • Flux weakening, Interior permanent magnet synchronous motor, Model order reduction, Orthogonal interpolation method, Vector control

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