【目的】次级分段磁通切换永磁直线电机(Sseg-FSPMLM)兼具高效率与低成本优势，适用于城市轨道交通牵引系统。本文旨在评估Sseg-FSPMLM在兼容现有轨道交通牵引及逆变回馈拓扑结构条件下的适用性，以探讨其在实际工程中的应用前景。【方法】首先，以广州地铁4号线为背景，对直线感应电机(LIM)与Sseg-FSPMLM的效率和使用成本进行了对比分析。然后，在不改变既有牵引供电系统与逆变回馈拓扑结构的前提下，构建了包含城市轨道交通牵引负载、储能回馈装置及电网接口的一体化仿真模型。最后，结合关键参数设计，对基于Sseg-FSPMLM的逆变回馈系统效能进行了测试与评估。【结果】在同等推力需求下，Sseg-FSPMLM的效率较LIM提升20%，且可节省34%的材料成本。基于建立的逆变回馈仿真模型，系统总计回收能量9.23×105 J，总储能比例达制动前动能的43.74%。【结论】将Sseg-FSPMLM作为牵引电机并应用于现有系统时，无需结构性改造逆变回馈拓扑，仅通过重新设计电气参数即可保障再生制动能量回馈系统的动态性能与稳定性，验证了Sseg-FSPMLM在现有轨道交通系统中直接应用的可行性。

[Objective] The secondary segmented flux-switching permanent magnet linear motor (Sseg-FSPMLM), which combines high efficiency with low cost, is well-suited for traction systems in urban rail transit. This paper investigates the applicability of the Sseg-FSPMLM under the condition of compatibility with existing traction and inverter feedback topologies, with the aim of evaluating its potential for practical engineering applications. [Methods] Firstly, using Guangzhou Metro Line 4 as a case study, a comparative analysis of the linear induction motor (LIM) and the Sseg-FSPMLM was conducted, focusing on motor efficiency and operational costs. Subsequently, without modifying the existing traction power supply system or inverter regeneration topology, an integrated simulation model was developed. This model incorporated the urban rail traction load, the regenerative energy storage device, and the grid interface. Finally, based on key parameter designs, the performance of the Sseg-FSPMLM-based inverter regeneration system was tested and evaluated. [Results] Under equivalent thrust requirements, the Sseg-FSPMLM achieved a 20% improvement in efficiency compared to the LIM, along with a 34% reduction in material costs. Simulations performed using the developed inverter regeneration model demonstrated a total recovered energy of 9.23×105 J, accounted for 43.74% of the kinetic energy present before braking. [Conclusion] When the Sseg-FSPMLM is deployed as a traction motor in existing systems, no structural modification to the inverter regeneration topology is required. By solely re-optimizing the electrical parameters, the dynamic performance and stability of the regenerative braking energy feedback system can be effectively ensured. This verifies the feasibility of directly integrating the Sseg-FSPMLM into current rail transit infrastructure.

国网江苏省电力有限公司省管产业科技项目(JC2024108)