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

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

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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Abstract

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 language	English
Publication date	2015
Publication status	Published - 2015
Event	24^th International Conference On Magnet Technology - Seoul, Korea, Republic of Duration: 18 Oct 2015 → 26 Oct 2015 Conference number: 24

Conference

Conference	24^th International Conference On Magnet Technology
Number	24
Country/Territory	Korea, Republic of
City	Seoul
Period	18/10/2015 → 26/10/2015

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title = "Improved dq-axes Model of PMSM Considering Airgap Flux Harmonics and Saturation",

abstract = "The classical dq-axes model of permanent magnet synchronous machines (PMSM) uses linear approximation. This was not an issue in earlier versions of PMSM drivesbecause they mostly used surface magnet motors. With the arrival of interior permanent magnet (IPM) machines, which use reluctance torque along with magnettorque, 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 dand 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. Twointerior permanent magnet motor with two different rotor topologies and different specifications are designed to evaluate the effect of saturation on synchronous andharmonic inductances, and operating points of the machines.",

author = "Muhammed Fasil and Ciprian Antaloae and Nenad Mijatovic and Jensen, {Bogi Bech} and Joachim Holb{\o}ll",

year = "2015",

language = "English",

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TY - CONF

T1 - Improved dq-axes Model of PMSM Considering Airgap Flux Harmonics and Saturation

AU - Fasil, Muhammed

AU - Antaloae, Ciprian

AU - Mijatovic, Nenad

AU - Jensen, Bogi Bech

AU - Holbøll, Joachim

N1 - Conference code: 24

PY - 2015

Y1 - 2015

N2 - The classical dq-axes model of permanent magnet synchronous machines (PMSM) uses linear approximation. This was not an issue in earlier versions of PMSM drivesbecause they mostly used surface magnet motors. With the arrival of interior permanent magnet (IPM) machines, which use reluctance torque along with magnettorque, 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 dand 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. Twointerior permanent magnet motor with two different rotor topologies and different specifications are designed to evaluate the effect of saturation on synchronous andharmonic inductances, and operating points of the machines.

AB - The classical dq-axes model of permanent magnet synchronous machines (PMSM) uses linear approximation. This was not an issue in earlier versions of PMSM drivesbecause they mostly used surface magnet motors. With the arrival of interior permanent magnet (IPM) machines, which use reluctance torque along with magnettorque, 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 dand 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. Twointerior permanent magnet motor with two different rotor topologies and different specifications are designed to evaluate the effect of saturation on synchronous andharmonic inductances, and operating points of the machines.

M3 - Poster

T2 - 24<sup>th</sup> International Conference On Magnet Technology

Y2 - 18 October 2015 through 26 October 2015

ER -

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

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Conference

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