Nonlinear Dynamic Model of PMBLDC Motor Considering Core Losses

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

doi:10.1109/TIE.2017.2711536

Nonlinear Dynamic Model of PMBLDC Motor Considering Core Losses

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

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Abstract

The phase variable model is used commonly when simulating a motor drive system with a three-phase permanent magnet brushless DC (PMBLDC) motor. The phase variable model neglects core losses and this affects its accuracy when modelling fractional-slot machines. The inaccuracy of phase variable model of fractional-slot machines can be attributed to considerable armature flux harmonics, which causes an increased core loss. This study proposes a nonlinear phase variable model of PMBLDC motor that considers the core losses induced in the stator and the rotor. The core loss model is developed based on the detailed analysis of the flux path and the variation of flux in different components of the machine. A prototype of fractional slot axial flux PMBLDC in-wheel motor is used to assess the proposed nonlinear dynamic model.

Original language	English
Journal	I E E E Transactions on Industrial Electronics
Volume	64
Issue number	12
Pages (from-to)	9282-9280
Number of pages	8
ISSN	0278-0046
DOIs	https://doi.org/10.1109/TIE.2017.2711536
Publication status	Published - 2017

Bibliographical note

(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

Keywords

Brushless DC (BLDC)
Machines
Axial flux machines
Nonlinear model
Dynamic model
Segmented axial torus motor

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10.1109/TIE.2017.2711536

07942087Accepted author manuscript, 14.8 MB

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title = "Nonlinear Dynamic Model of PMBLDC Motor Considering Core Losses",

abstract = "The phase variable model is used commonly when simulating a motor drive system with a three-phase permanent magnet brushless DC (PMBLDC) motor. The phase variable model neglects core losses and this affects its accuracy when modelling fractional-slot machines. The inaccuracy of phase variable model of fractional-slot machines can be attributed to considerable armature flux harmonics, which causes an increased core loss. This study proposes a nonlinear phase variable model of PMBLDC motor that considers the core losses induced in the stator and the rotor. The core loss model is developed based on the detailed analysis of the flux path and the variation of flux in different components of the machine. A prototype of fractional slot axial flux PMBLDC in-wheel motor is used to assess the proposed nonlinear dynamic model.",

keywords = "Brushless DC (BLDC), Machines, Axial flux machines, Nonlinear model, Dynamic model, Segmented axial torus motor",

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

note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.",

year = "2017",

doi = "10.1109/TIE.2017.2711536",

language = "English",

volume = "64",

pages = "9282--9280",

journal = "I E E E Transactions on Industrial Electronics",

issn = "0278-0046",

publisher = "Institute of Electrical and Electronics Engineers",

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TY - JOUR

T1 - Nonlinear Dynamic Model of PMBLDC Motor Considering Core Losses

AU - Fasil, Muhammed

AU - Mijatovic, Nenad

AU - Jensen, Bogi Bech

AU - Holbøll, Joachim

N1 - (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2017

Y1 - 2017

N2 - The phase variable model is used commonly when simulating a motor drive system with a three-phase permanent magnet brushless DC (PMBLDC) motor. The phase variable model neglects core losses and this affects its accuracy when modelling fractional-slot machines. The inaccuracy of phase variable model of fractional-slot machines can be attributed to considerable armature flux harmonics, which causes an increased core loss. This study proposes a nonlinear phase variable model of PMBLDC motor that considers the core losses induced in the stator and the rotor. The core loss model is developed based on the detailed analysis of the flux path and the variation of flux in different components of the machine. A prototype of fractional slot axial flux PMBLDC in-wheel motor is used to assess the proposed nonlinear dynamic model.

AB - The phase variable model is used commonly when simulating a motor drive system with a three-phase permanent magnet brushless DC (PMBLDC) motor. The phase variable model neglects core losses and this affects its accuracy when modelling fractional-slot machines. The inaccuracy of phase variable model of fractional-slot machines can be attributed to considerable armature flux harmonics, which causes an increased core loss. This study proposes a nonlinear phase variable model of PMBLDC motor that considers the core losses induced in the stator and the rotor. The core loss model is developed based on the detailed analysis of the flux path and the variation of flux in different components of the machine. A prototype of fractional slot axial flux PMBLDC in-wheel motor is used to assess the proposed nonlinear dynamic model.

KW - Brushless DC (BLDC)

KW - Machines

KW - Axial flux machines

KW - Nonlinear model

KW - Dynamic model

KW - Segmented axial torus motor

U2 - 10.1109/TIE.2017.2711536

DO - 10.1109/TIE.2017.2711536

M3 - Journal article

VL - 64

SP - 9282

EP - 9280

JO - I E E E Transactions on Industrial Electronics

JF - I E E E Transactions on Industrial Electronics

SN - 0278-0046

IS - 12

ER -