Modular Electric Multiple Unit Train Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multiple unit trains lack flexibility in configuration, particularly in long-distance and high-speed operations, as they are designed as permanently configured trains with limited ability to adjust drive power, seating capacity, and equipment, and are restricted to a single current collector type, making them unsuitable for operation in both DC and AC voltage networks.
Innovation Solution
The train is composed of detachably coupled drive modules, each containing a motor vehicle and a power supply vehicle with AC power supply devices, allowing for the formation of trains of varying lengths without significant modifications, and includes non-driven additional cars that can be easily reconfigured to accommodate different voltage networks and equipment needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple units are designed as permanently configured trains, then structural stability is improved, but adaptability deteriorates
Solution Approach 1:
The train is divided into permanently coupled drive modules (motor car + power supply car) that maintain structural stability, while these modules can be detachably coupled to non-driven additional cars to enable flexible reconfiguration. This segmentation allows the core drive units to remain stable while the overall train composition adapts to different operational requirements.
2Device complexity
If a single current collector type is provided per drive device, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The power supply car is equipped with both AC and DC power supply devices, making it capable of operating in different voltage networks. This multi-functionality allows a single drive module to adapt to both AC and DC overhead line configurations without requiring separate current collectors for each drive device, thus maintaining simplicity while enhancing adaptability.
3Speed
If trains are designed for high-speed operation above 230 km/h, then speed is improved, but reliability deteriorates due to technical limitations
Solution Approach 1:
The drive modules can be dynamically reconfigured by detachably coupling or uncoupling them from non-driven additional cars. This allows the train to be optimized for high-speed operation by using only the necessary drive modules, reducing overall train length and weight, thereby improving acceleration and top speed while maintaining reliability through reduced mechanical stress on the system.
4Power
If locomotives or powered end cars are used, then drive power is improved, but adaptability deteriorates due to fixed high drive power
Solution Approach 1:
Instead of using a single locomotive or powered end car with fixed high drive power, the train uses multiple drive modules distributed along the train. Each drive module contains a motor car and power supply car, allowing the drive power to be segmented and distributed. This enables flexible reconfiguration where drive modules can be coupled or uncoupled to match the required power levels for different operational scenarios, improving adaptability while maintaining sufficient drive power.
Data Source
AI summary
The set has a drive module (A) including an engine coach (3) and a power supplying coach (5) with a power supplying device (6) for supplying alternating current for a drive device (4) of the engine coach. The engine coach and the power supplying coach are detachably coupled with each other, and coaches (1) are firmly coupled to each other within the drive module that includes drive components (9, 10, 13). A user-defined long train with the coaches is formed from the drive module and non-driven additional coaches (7) by a coupling without any change and modification. An independent claim is also included for a method for manufacturing a train set.