Novel Design of Six-Phase Spoke-Type Ferrite Permanent Magnet Motor for Electric Truck Application
Novel Design of Six-Phase Spoke-Type Ferrite Permanent Magnet Motor for Electric Truck Application
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DOI：
10.3390/en15061997
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发表时间：
2022-03
期刊：
影响因子：
3.2
通讯作者：
H. Won;Yang-Ki Hong;Minyeong Choi;Jonathan Platt;Briana Bryant;Seungdeog Choi;Shuhui Li;Hwan-Sik Yoon;T. Haskew;Jong-Kook Lee;Taegyu Lee;Taewon Lim
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文献类型：
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作者：
H. Won;Yang-Ki Hong;Minyeong Choi;Jonathan Platt;Briana Bryant;Seungdeog Choi;Shuhui Li;Hwan-Sik Yoon;T. Haskew;Jong-Kook Lee;Taegyu Lee;Taewon Lim
提出了一种用于电动载重汽车的300kw 24槽/10极6相定子移分槽集中绕组轮辐式铁氧体永磁电机。所提出的电机由双三相绕组的定子组成，定子的位置为75度，以减少高阶MMF谐波阶，转子采用廉价的高电阻铁氧体永磁体，采用辐条结构。将该定子机的仿真结果与实际制造的定子机进行了比较，结果吻合较好。为了进一步将转矩脉动从2.5%降低到0.9%，同时保持最大转矩2980 Nm的高扭矩，在转子中嵌入了直径为11 mm的圆孔。对该电机进行了不可逆退磁、机械和热稳定性以及容错能力的评估。为了评估所提出的电机性能，利用MATLAB/Simulink构建了电动卡车仿真模型，并与已有的12槽/10极稀土永磁电机进行了比较。与之前报道的六相稀土永磁平板电机相比，该电机可以节省4.3千瓦时的能源，成本降低2512美元，同时保持相似的电机性能。
This paper proposes a 300 kW 24-slot/10-pole 6-phase stator-shifted fractional-slot concentrated winding spoke-type ferrite permanent magnet machine for electric truck applications. The proposed motor consists of a stator with dual three-phase windings positioned 75 degrees apart to reduce higher-order MMF harmonic order, and a rotor with an inexpensive and high-resistance ferrite permanent magnet in the spoke configuration. The simulated result of the stator-shifted machine is compared with a fabricated stator-shifted machine, and the results show good agreement with each other. To further reduce the torque ripple from 2.5 to 0.9% while maintaining a high maximum torque of 2980 Nm, circular voids with a diameter of 11 mm are embedded in the rotor. The proposed motor is evaluated for irreversible demagnetization, mechanical and thermal stability, and fault tolerant ability. To assess the proposed motor performance, the electric truck simulation model is constructed using MATLAB/Simulink and used to compare with the reported 12-slot/10-pole rare-earth permanent magnet-based machine. Compared to a previously reported six-phase rare-earth permanent magnet based flat-type machine, the proposed motor can save 4.3 kWh of energy with a USD 2512 lower cost while retaining a similar motor performance.