Comparison of permanent magnet synchronous machines with concentrated windings and different rotor configurations

Tovar-Barranco, Aitor; Briz, Fernando; López-de-Heredia, A.; Villar, Irma

doi:10.23919/epe17ecceeurope.2017.8099335

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…Design details for both prototypes affecting to end-space convection heat-transfer are shown in Table III. Further details on the designs can be found in [29]. End-windings in FSCW designs are considerably reduced compared to standard winding configurations.…”

Section: Electric Motor Prototypesmentioning

confidence: 99%

Modeling of End-Space Convection Heat-Transfer for Internal and External Rotor PMSMs With Fractional-Slot Concentrated Windings

Tovar-Barranco

López-de-Heredia

Villar

et al. 2021

IEEE Trans. Ind. Electron.

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Modeling of convection heat-transfer at the end-windings for thermal networks using lumpedparameters has been widely discussed in the literature. Unfortunately, the resulting coefficients are highly influenced by the end-winding shape, the area in the vicinity of the end-windings, the cooling method of this region (if any), as well by the size and power of the machine. This makes extremely difficult for the designer to choose a suitable coefficient for the thermal analysis during the design stage of an electric motor. A methodology to obtain the end-windings convection heat-transfer coefficients for fractional-slot concentrated winding permanent-magnet synchronous motors is proposed in this paper. Machine designs with both internal and external rotors will be considered. The experimental tests required for the model characterization are described in detail. General expressions of the convection heat-transfer coefficients between the end-windings and the housing end-caps are proposed for both internal and external rotor designs. Differences observed with results reported in the literature are also discussed.

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Section: Electric Motor Prototypesmentioning

confidence: 99%

Modeling of End-Space Convection Heat-Transfer for Internal and External Rotor PMSMs With Fractional-Slot Concentrated Windings

Tovar-Barranco

López-de-Heredia

Villar

et al. 2021

IEEE Trans. Ind. Electron.

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“…However, electric motors with exterior rotors have been marketed for traditional traction drives in recent years since they provide higher torque compared with internal rotor PMSMs [17].…”

Section: Machine Topologymentioning

confidence: 99%

“…FSCW of PMSMs has acquired a lot of interest in the last few years owing to the advantages provided where a wide constant power range is significant. FSCW has the advantage of improved flux weakening capability, high power density, cost-effective manufacturing, high slot fill factor, short end windings, and high fault tolerance [17]. Reference [19] describes the investigated winding topology that gives a high winding factor for a given slot-pole combination.…”

Section: Machine Topologymentioning

confidence: 99%

Design and Performance Analysis of Permanent Magnet Synchronous Motor for Electric Vehicles Application

Bdewi¹,

Mohammed²,

Ali³

2021

ETJ

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In electrical vehicle applications, power density plays a significant role in improving machine performance. The main objective of this paper is to design and analyze the performance of in-wheel outer rotor permanent magnet synchronous motor (PMSM) used in electric vehicles based on a previously designed model. The key challenge is to achieve the best machine performance regarding the highest torque density and lowest torque ripple. This work also aims at reducing the machine cost by using permanent magnet (PM) material, which has less energy density than the PM used in the previously designed model. An optimization procedure is carried out to improve the generated torque, keeping the same aspects of size and volume of the selected machine. On the other hand, the other specifications of the machine are taken into consideration and are maintained within the acceptable level. According to their major impact on the machine’s performance, the most important parameters of machine designing is selected during the optimization procedure. This proposed machine is implemented and tested using the finite element software package “MagNet 7.4.1” with Visual Basic 16.0 programming language and MATLAB 9.5 Simulink for post-processing.

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“…Int J Elec & Comp Eng ISSN: 2088-8708  Conventionally, PMSMs, for traction drives, are designed with inner rotor models while motors of outer rotor are mainly limited to applications which benefit from the direct connection between the traction drive and the rotor surface. Recently, outer rotor motors have been marketed for traditional traction applications as they develop higher torque density in comparison with inner rotor PMSMs [10]. The torque is produced at a diameter which is large relative to the motor diameter, i.e., the same torque can be developed by means of lower magnetic and electric loading compared with that of inner rotor permanent magnet motor.…”

Section: Introductionmentioning

confidence: 99%

In-wheel, outer rotor, permanent magnet synchronous motor design with improved torque density for electric vehicle applications

Bdewi

Ali

Mohammed

2022

IJECE

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In electric vehicle applications, the torque density of electric motor plays an important role in improving the performance of the vehicle. The main objective of this paper is to investigate a possible method for improving the torque density of a permanent magnet synchronous motor used in electric vehicles. At the same time, other machine specifications were taken into account and kept within the acceptable level. This was achieved by incorporating performance enhancement strategies such as investigating ofhigh-efficient winding topology for the motor’s stator to give the highest winding factor and optimizing the machine dimensions to achieve the best performance. MagNet 7.4.1 software package with static and transient finite element method solver was used for implementing the proposed design. The results showed a significant improvement in the torque density with keeping the overall machine performance.

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Comparison of permanent magnet synchronous machines with concentrated windings and different rotor configurations

Cited by 10 publications

References 11 publications

Modeling of End-Space Convection Heat-Transfer for Internal and External Rotor PMSMs With Fractional-Slot Concentrated Windings

Modeling of End-Space Convection Heat-Transfer for Internal and External Rotor PMSMs With Fractional-Slot Concentrated Windings

Design and Performance Analysis of Permanent Magnet Synchronous Motor for Electric Vehicles Application

In-wheel, outer rotor, permanent magnet synchronous motor design with improved torque density for electric vehicle applications

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