Concentrated winding IPM synchronous motor design for wide field weakening applications

Toulabi, Mohammad Sedigh; Salmon, John; Knight, A.M.

doi:10.1109/ecce.2015.7310206

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…IPMSM has the characteristics of high efficiency and high torque density and has the advantage of being able to operate in a relatively wide high-speed range through fieldweakening control. In addition, it has the advantage of high mechanical safety during high-speed operation by inserting a permanent magnet into the iron core of the rotor [6][7][8]. However, a fault may occur due to a mechanical shock transmitted to the electric motor from the outside, and the reliability and lifespan of the electric motor may reduce due to an electrical defect.…”

Section: Introductionmentioning

confidence: 99%

Fault Mechanism Analysis of Irreversible Demagnetization Due to the Dynamic Eccentricity of IPMSM for EV Traction

Kang

Hur

2022

IEEE Access

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The dynamic eccentricity fault (DEF) of the interior permanent magnet synchronous motor (IPMSM) is mainly caused by external mechanical shock. In the case of DEF, an unbalanced magnetic force occurs because the length of the air gap is not constant. Noise and vibration of the motor occur due to unbalanced magnetic force. In addition, since the length of the air gap is not constant, the distribution of magnetic flux density is distorted, and iron loss is increased. As the iron loss increases, the temperature rises, and an irreversible demagnetization fault (IDF) of the permanent magnet occurs due to overheating. Therefore, in this paper, the fault mechanism of IDF due to DEF of IPMSM for electric vehicle (EV) traction is analyzed. Initially, the magnetic flux density and iron loss characteristics according to the healthy condition and DEF condition are analyzed using the finite element method (FEM). Then, the detailed iron loss analysis is performed based on the phase current waveform measured through the load test of the motor. Finally, the fault mechanism of IDF due to DEF was verified through an electric-axle load test on a manufactured motor having eccentricity.INDEX TERMS Dynamic eccentricity, electric vehicle (EV), interior permanent magnet synchronous motor (IPMSM), iron loss, irreversible demagnetization.

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Section: Introductionmentioning

confidence: 99%

Fault Mechanism Analysis of Irreversible Demagnetization Due to the Dynamic Eccentricity of IPMSM for EV Traction

Kang

Hur

2022

IEEE Access

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“…The V-shaped interior permanent-magnet (IPM) and synchronous reluctance machine are designed to have a lower cost than an SPM machine when the same torque performance is required (Fei et al , 2014; Liu et al , 2016). Due to the benefits of short end winding, high slot fill factor and high torque density, the fractional-slot concentrated windings (FSCW) IPM are gaining more and more attention (Toulabi et al , 2017; Fang et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of a spoke-type permanent magnet motor with fractional-slot concentrated windings for EVs

Liu

Huang

2021

COMPEL

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Purpose This paper aims to propose a spoke-type fractional-slot concentrated windings (FSCW) PM machine for EVs driving system to improve torque density. To further improve electromagnetic performance, the multi-objective optimization design is processed based on response surface (RS) model and simulated annealing cuckoo search (SA-CS) algorithm. Design/methodology/approach The spoke-type FSCW PM machine is designed and optimized to meet the requirement of EVs driving system. First, a spoke-type FSCW PM machine is designed and some of key parameters are obtained based on equivalent magnetic circuit (EMC) method. Then, the RS model and modified SA-CS algorithm are proposed to obtain higher torque, lower torque ripple and higher efficiency. Findings After verification by finite element method for no-load and load performance, the optimal machine has higher torque density, lower torque ripple and higher efficiency compared with initial machine. Finally, a 20 kW prototype is manufactured and tested to verify the validity of the proposed optimization design method. Originality/value This paper designs a high torque density spoke-type FSCW PM machine, which is superior for EVs driving system. Meanwhile, a novel modified SA-CS algorithm is applied to the field of electrical machine multi-objective optimal design.

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Optimizing an Interior-Permanent-Magnet Tooth-Coil-Winding Traction Motor for its Entire Operating Range

Allahyari,

Bostanci,

Odabas

et al. 2024

2024 International Conference on Electrical Machines (ICEM)

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Concentrated winding IPM synchronous motor design for wide field weakening applications

Cited by 4 publications

References 16 publications

Fault Mechanism Analysis of Irreversible Demagnetization Due to the Dynamic Eccentricity of IPMSM for EV Traction

Fault Mechanism Analysis of Irreversible Demagnetization Due to the Dynamic Eccentricity of IPMSM for EV Traction

Multi-objective optimization of a spoke-type permanent magnet motor with fractional-slot concentrated windings for EVs

Optimizing an Interior-Permanent-Magnet Tooth-Coil-Winding Traction Motor for its Entire Operating Range

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