Design and Analysis of Halbach Ironless Flywheel BLDC Motor/Generators

被引：43

作者：

Liu, Kai ^{[1
]}

Yin, Ming ^{[1
]}

Hua, Wei ^{[1
]}

Ma, Ziqi ^{[2
]}

Lin, Mingyao ^{[1
]}

Kong, Yong ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Engn, Nanjing 210018, Jiangsu, Peoples R China

[2] Shanghai Aerosp Equipment Mfg Co Ltd, Shanghai 200245, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2018年 / 54卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Air-gap field distribution; eddy current loss; Halbach magnet motor; ironless brushless dc motor (BLDCM);

D O I：

10.1109/TMAG.2018.2833958

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Halbach array-based permanent magnet (PM) brushless machines exhibit attractive features when compared with conventional PM brushless machines with normal segmented magnets, including the flux-concentration effect, essentially sinusoidal air-gap flux density due to PMs, and negligible cogging torque. However, as for a motor/generator used in flywheel, an external rotor composed of Halbach array and rotor back-iron is necessary to increase the inertia of flywheel system, which is different from the conventional external-rotor machines. In this paper, a Halbach array PM motor is studied compared with the radial magnet array. The relationship between the air-gap field distribution and the magnet array is discussed. Finally, the eddy current loss in PMs of the external-rotor ironless brushless dc motor is analyzed between the Halbach PM motor and the conventional PM motor.

引用

页数：5

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