Improved dq-axes Model of PMSM Considering Airgap Flux Harmonics and Saturation

Muhammed Fasil, Ciprian Antaloae, Nenad Mijatovic, Bogi Bech Jensen, Joachim Holbøll

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The classical dq-axes model of permanent magnet synchronous machines (PMSM) uses linear approximation. This was not an issue in earlier versions of PMSM drives
because they mostly used surface magnet motors. With the arrival of interior permanent magnet (IPM) machines, which use reluctance torque along with magnet
torque, the accuracy of linear models are found to be insufficient. In this work, the effect of air gap flux harmonics is included in the classical model of PMSM using d
and q-axes harmonic inductances. Further, a method has been presented to assess the effect of saturation and cross-saturation on constant torque curves of PMSM. Two
interior permanent magnet motor with two different rotor topologies and different specifications are designed to evaluate the effect of saturation on synchronous and
harmonic inductances, and operating points of the machines.
Original languageEnglish
Publication date2015
Publication statusPublished - 2015
EventInternational Conference On Magnet Technology 24 - Seoul, Korea, Republic of
Duration: 18 Oct 201526 Oct 2015


ConferenceInternational Conference On Magnet Technology 24
CountryKorea, Republic of

Cite this

Fasil, M., Antaloae, C., Mijatovic, N., Jensen, B. B., & Holbøll, J. (2015). Improved dq-axes Model of PMSM Considering Airgap Flux Harmonics and Saturation. Poster session presented at International Conference On Magnet Technology 24, Seoul, Korea, Republic of.