Modular Stator Coils for Maglev Trains
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Solution Overview
Problem
The construction of long stator power supply sections for maglev trains is serial and time-consuming, requiring large dedicated winding equipment and resulting in high costs and significant material waste due to the difficulty in disassembling and rewinding long stator coils, which leads to prolonged railway line stoppages during repairs.
Innovation Solution
The design includes multiple stator iron core modules with embedded stator coils, where each module corresponds to a stator coil, allowing for parallel construction, reduced equipment needs, and easy disassembly through connectors, enabling efficient factory assembly and minimizing coil length for quicker repairs and reduced waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the long stator power supply section is constructed using serial processes with large dedicated winding equipment, then the long stator coil can be embedded into the long stator iron core, but the construction period is long and the cost is high
Solution Approach 1:
The long stator iron core is divided into multiple modular units, each with its own stator coil. These modules can be manufactured independently and then assembled together to form the complete long stator power supply section. This segmentation enables parallel construction of multiple modules, significantly reducing the overall construction period while eliminating the need for large dedicated winding equipment.
2Length of stationary object
If the long stator coil is made very long to cover the entire power supply section, then the coverage is complete, but the difficulty of disassembly and rewinding increases and material waste becomes serious
Solution Approach 1:
The long stator coil is segmented into multiple shorter coil modules, each corresponding to a specific modular unit of the stator iron core. These modular coils are connected in series through connectors. When repair is needed, only the damaged coil module needs to be replaced rather than the entire long coil, making disassembly and rewinding much easier and reducing material waste.
3Reliability
If one stator iron core module is damaged and needs replacement, then the reliability is improved, but the whole long stator coil must be disassembled and re-wound causing prolonged stoppage
Solution Approach 1:
The long stator power supply section is divided into independent modular units, each containing a stator iron core module and its corresponding stator coil. These modules are connected through detachable connectors. When a module is damaged, only that specific module needs to be replaced, not the entire system. This modular design enables quick replacement and significantly reduces repair time and railway line stoppage.
4Manufacturing precision
If large dedicated winding equipment is used to embed the long stator coil, then the embedding quality is ensured, but the cost increases and the equipment requirement becomes complex
Solution Approach 1:
The long stator coil embedding process is divided into multiple independent embedding operations on smaller modular units. Each module can be manufactured using standard, readily available winding equipment rather than requiring large dedicated winding equipment. This segmentation reduces device complexity and makes the manufacturing process more accessible while maintaining embedding quality through standardized modular production.
Data Source
AI summary
A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules (1) and stator coils (2) equal in number to the stator core modules (1). Each stator of the plurality of stator coils (2) is correspondingly embedded into one stator core module of the stator core modules (1) respectively; joints are arranged at both ends of each stator coil (2); the stator coils (2) on every two adjacent stator core modules (1) are detachably connected by means of the joints; and the joints of the stator coils (2) on the stator core modules (1) at both ends are connected to a feeder cable.