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Electric Drive for an In-wheel Fractional-slot Axial Flux Machine

Electric Drive for an In-wheel Fractional-slot Axial Flux Machine
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摘要 This paper describes the electric drive for an in-wheel fractional-slot axial flux machine,designed for achieving a wide flux-weakening operating region.By using a slotted stator with fractional-slot windings and additional cores enclosing end windings,the axial flux machine reaches a wide constant power speed range.The machine is designed for increasing flux-weakening capability while obtaining low harmonic back-electromotive force and low cogging torque.A 10 N.m axial flux machine exhibiting 3 to 1 flux-weakening speed range has been built.A flux-weakening controller,able to maximize the output torque in the flux-weakening region,is designed and implemented.The goodness of both design and control algorithm is proved by experimental tests.However,such a fractional-slot machine has not only advantages.Rotor losses are very high,and they have to be properly considered during the design process. This paper describes the electric drive for an in-wheel fractional-slot axial flux machine, designed for achieving a wide flux-weakening operating region.By using a slotted stator with fractional-slot windings and additional cores enclosing end windings,the axial flux machine reaches a wide constant power speed range. The machine is designed for increasing flux-weakening capability while obtaining low harmonic back-electromotive force and low cogging torque.A 10 N .m axial flux machine exhibiting 3 to 1 flux-weakening speed range has been built.A flux-weakening controller,able to maximize the output torque in the flux-weakening region, is designed and implemented.The goodness of both design and control algorithm is proved by experimental tests.However,such a fractional-slot machine has not only advantages.Rotor losses are very high, and they have to be properly considered during the design process.
作者 Luigi Alberti Nicola Bianchi
机构地区 Department of Electrical Engineering
出处 《电力电子技术》 CSCD 北大核心 2008年第10期7-10,共4页 Power Electronics
基金 financed by the Electric'Drive Laboratory,Department of Electrical Engineering,University of Padova,Padova(haly).
关键词 电气传动技术 轴向磁机 电子技术 传动系统 in-wheel motor AC motor drives ractional-slot machines axial flux motor flux-weakening control
分类号 U262-27 [机械工程—车辆工程] TN-4 [电子电信]
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参考文献19

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电力电子技术
2008年 第10期

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