Optimal Study of a High Specific Torque Vernier-type Axial-flux PM Machine with Two Different Stators and a Single Winding

Kesgin, Murat G.; Han, Peng; Taran, Narges; Ionel, Dan M.

doi:10.1109/ecce44975.2020.9235901

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…The convection thermal resistances of the airgap, , and of the machine's surface to the environment through the cooling system, are obtained from (15) and (16). In these, = 2 is the airgap heat transfer surface and = 2 is the electric machine's surface with outer radius R and length L. The heat transfer is described by the thermal equation system (17), where and are the surface and ambient temperatures.…”

Section: Maximum Operating Temperature Estimationmentioning

confidence: 99%

Optimal Design of an Interior Permanent Magnet Synchronous Motor with Cobalt Iron Core

Bhagubai¹,

Bucho²,

Fernandes³

et al. 2022

Preprint

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The use of cobalt-iron (VaCoFe) core is investigated as an alternative to silicon-iron (FeSi) on the design of interior permanent magnet synchronous motors (IPMSM). A spoke-type IPMSM geometry is optimized considering FeSi and VaCoFe cores for a torque range up to 40 N.m, providing a general comparative analysis between materials, considering the application of a 4-motor competition vehicle’s powertrain. A genetic optimization algorithm is applied over a hybrid analytical/finite-element model of the motor to provide sufficiently accurate electromagnetic and thermal results within a feasible time. VaCoFe can result in an estimated increase of up to 5 % in efficiency for the same torque, or up to 64 % torque increase for the same efficiency level. After optimization, and using a detailed time-dependent model, a potential 3.2 % increase in efficiency, a core weight reduction of 4.1 %, and a decrease of 9.6 % in the motor’s core volume was found for the VaCoFe at 20 Nm. In addition, for the same motor volume, the VaCoFe allows an increase of 51.9 % of torque with an increase of 1.1 % of efficiency, when compared with FeSi.

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Section: Maximum Operating Temperature Estimationmentioning

confidence: 99%

Optimal Design of an Interior Permanent Magnet Synchronous Motor with Cobalt Iron Core

Bhagubai¹,

Bucho²,

Fernandes³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…This kind of electrical machine design based on optimization tools using hybrid analytical/FE models is a successful method [13] that also takes less computation time than purely FE models [14] while providing good results. It allows large-scale design optimization to achieve highpower density designs of permanent magnet-based machines such as IPMSM [15] and other topologies, including novel axial flux PMSM [16]. Particularly in [15], large-scale multi-objective optimization using a differential evolution algorithm with a FE model was applied to obtain an optimal spoke-type IPMSM design for a Formula E competition (110 N•m at 6000 rpm), experimentally validated, achieving 12.2 N•m/kg.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of an Interior Permanent Magnet Synchronous Motor with Cobalt Iron Core

Bhagubai¹,

Bucho²,

Fernandes³

et al. 2022

Energies

View full text Add to dashboard Cite

The use of a cobalt-iron (VaCoFe) core is investigated as an alternative to silicon-iron (FeSi) in the design of interior permanent magnet synchronous motors (IPMSM). Considering VaCoFe and FeSi cores, a spoke-type IPMSM geometry is optimized for a torque range up to 40 N·m, providing a general comparative analysis between materials. This is done considering the application of a four-motor competition vehicle’s powertrain. A genetic optimization algorithm is coupled to the motor’s electromagnetic and thermal hybrid analytical/finite-element model to provide sufficiently accurate results within a feasible time. VaCoFe allows an estimated increase of up to 64% in torque for the same efficiency level, or up to 5% in efficiency for the same torque. After optimization and using a detailed time-dependent model, a potential 3.2% increase in efficiency, a core weight reduction of 4.1%, and a decrease of 9.6% in the motor’s core volume were found for the VaCoFe at 20 N·m. In addition, for the same motor volume, the VaCoFe allows an increase of 51.9% in torque with an increase of 1.1% in efficiency when compared with FeSi.

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Recent Advances in Analysis and Design of Axial Flux Permanent Magnet Electric Machines

Nishanth

Verdeghem

Severson

2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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Optimal Study of a High Specific Torque Vernier-type Axial-flux PM Machine with Two Different Stators and a Single Winding

Cited by 9 publications

References 11 publications

Optimal Design of an Interior Permanent Magnet Synchronous Motor with Cobalt Iron Core

Optimal Design of an Interior Permanent Magnet Synchronous Motor with Cobalt Iron Core

Optimal Design of an Interior Permanent Magnet Synchronous Motor with Cobalt Iron Core

Recent Advances in Analysis and Design of Axial Flux Permanent Magnet Electric Machines

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