Optimized design and performance analysis of a magnetic-field modulated brushless dual-mechanical port motor with Halbach array permanent magnets
Optimized design and performance analysis of a magnetic-field modulated brushless dual-mechanical port motor with Halbach array permanent magnets
复制标题
Halbach阵列永磁体磁场调制无刷双机械口电机的优化设计与性能分析
DOI：
10.1177/1687814020957754
复制
发表时间：
2020-09-01
影响因子：
2.1
通讯作者：
Li, Junmin
中科院分区：
文献类型：
--
作者：
He, Ren;Li, Junmin
为了开发电动无级变速器(E-CVT)以取代串并联混合动力汽车(HEV)中的机械动力耦合装置，提出了一种结构更紧凑的Halbach阵列永磁体磁场调制无刷双机械式端口电机。用杠杆类比的方法对其运行特性进行了分析。结果表明，该电机能够实现发动机与车轮的转速和扭矩解耦，满足混合动力汽车多工况运行的要求。采用了参数灵敏度和响应面法相结合的优化方案，实现了输出扭矩、扭矩脉动和永磁体用量的多目标优化设计。考虑了优化目标之间的权衡，有效地确定了关键结构参数及其最佳值。基于二维模型，对其电磁性能进行了仿真分析。结果表明，参数优化后，空载反电势具有更好的正弦特性，电机的转矩脉动和齿槽转矩峰值明显减小。此外，对一台样机进行了测试。实验结果与仿真结果吻合较好，验证了所提出的结构和参数优化方法的有效性。
In order to develop an electrical continuously variable transmission (E-CVT) to replace mechanical power coupling equipment applied in series-parallel hybrid electric vehicle (HEV), this paper proposes a magnetic-field modulated brushless dual-mechanical port motor with Halbach array permanent magnets, which has a more compact structure. The operating characteristics are analyzed by the lever analogy. It is concluded that the motor can realize the speed and torque decoupling between the engine and the wheel, which meet multi-mode operation requirements for HEV. To realize the multi-objective design of torque output, torque ripple and usage amount of permanent magnets, an optimization scheme combined parameter sensitivity with response surface methodology is adopted. The trade-offs among the optimization objectives are considered, then the key structural parameters and its optimal values are efficiently determined. Based on a two-dimensional model, the electromagnetic performances are simulated and analyzed. The results show that, after the parameters optimization, the no-load back electromotive force (EMF) has better sinusoidal characteristic, and the torque ripples and cogging torque peaks of the motor have been significantly reduced. Furthermore, a prototype motor is tested. The experimental results are consistent with the simulation results, which demonstrates the validity of the proposed structure and parameter optimization method.