【目的】本文提出并设计了一种轴向磁通分立模块化对转双转子同步发电机(DM-AF-CRDRSG),旨在实现多极对磁场耦合下的宽频电势调制与稳定发电。【方法】首先,电机定子采用矩形铁心6槽三相分数槽集中绕组,双转子激励(2/4极)与定子磁动势主导分量实现选择性耦合。其次,搭建样机试验平台,进行空载与负载试验,并与仿真结果对比。然后,利用Ansys Maxwell软件构建了11个磁路等效的二维有限元模型,齿槽比从1到3按等差分布,研究不同齿槽比下的电压波形特征。最后,将Maxwell 2D模型结果叠加折算至样机模型,对比分析仿真与试验的感应电压波形及谐波频谱特性,验证电机拓扑的可行性。【结果】仿真与试验的感应电压波形均呈现良好正弦性,且基本吻合。虽然仿真结果的谐波含量较高、幅值略大,但两者的一致性仍验证了DM-AF-CRDRSG结构设计的正确性与有效性。【结论】本文设计的DM-AF-CRDRSG在宽频磁动势驱动下具备良好的空间电势调制能力与稳定发电性能。

[Objective] This paper proposes and designs an axial-flux discrete-modular counter-rotating dual-rotor synchronous generator (DM-AF-CRDRSG), aiming to achieve wide-band potential modulation and stable power generation under multi-pole-pair magnetic field coupling. [Methods] Firstly, the stator of the motor was designed with a rectangular iron core, 6-slot three-phase fractional-slot concentrated winding. The dual-rotor excitation (2/4 poles) was selectively coupled with the dominant component of the stator magnetomotive force. Then, a prototype test platform was built, and no-load and load tests were conducted, with the results compared to simulations. Next, 11 magnetically equivalent two-dimensional finite element models were constructed using Ansys Maxwell software, with tooth-slot ratios ranging from 1 to 3 in equal steps, and the voltage waveforms characteristics under different tooth-slot ratios were studied. Finally, the results of the Maxwell 2D models were superimposed and converted to the prototype model, and the induced voltage waveforms and harmonic spectrum characteristics of the simulation and experiment were compared and analyzed to verify the feasibility of the motor topology. [Results] The induced voltage waveforms from both the simulation and experiment exhibited good sinusoidal characteristics and were found to be basically consistent. Although the harmonic content in the simulation results was higher and the amplitude was slightly larger, the consistency between the two still verified the correctness and effectiveness of the DM-AF-CRDRSG structural design. [Conclusion] The DM-AF-CRDRSG designed in this paper exhibits excellent spatial potential modulation capability and stable power generation performance under wide-band magnetomotive force excitation.

2025年江苏省大学生实践创新训练计划项目(202511276008)；江苏省配电网智能技术与装备协同创新中心开放基金项目(XTCX202405)；中国博士后科学基金面上项目(2017M621086)