Traction Motor Torque Distribution via Axle Load Compensation
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Solution Overview
Problem
Conventional power-distributed trains experience reduced adhesion utilization due to axle load transfer, resulting in suboptimal utilization of tractive force.
Innovation Solution
A method and system for tractive force distribution using electrical control compensation technology, which determines the current motor car's parameter information, calculates axle load transfer, and adjusts tractive forces based on axle loads to optimize adhesion utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional power-distributed trains operate without electrical control compensation, then the system structure is simple, but axle load transfer causes reduced adhesion utilization and suboptimal tractive force utilization
Solution Approach 1:
The patent implements a feedback control mechanism where the control system continuously monitors axle load distribution and dynamically adjusts traction motor output torque based on real-time axle load conditions. This closed-loop feedback ensures optimal adhesion utilization by matching tractive force to actual axle load capacity, resolving the contradiction between maximizing productivity and maintaining system simplicity.
Solution Approach 2:
The system dynamically changes the operational parameters of traction motors by adjusting output torque based on detected axle load variations. This parameter adjustment allows the train to adapt to changing adhesion conditions caused by axle load transfer, thereby maximizing tractive force utilization without requiring fundamental changes to the vehicle structure.
2Reliability
If electrical control compensation technology is applied to adjust tractive forces, then adhesion utilization is optimized, but the control system complexity increases
Solution Approach 1:
The patent replaces potential mechanical load adjustment mechanisms with electrical control of traction motors. By using electrical signals to adjust motor torque output based on axle load conditions, the system achieves reliable adhesion utilization without complex mechanical modification systems, thus improving reliability while limiting the increase in overall system complexity.
3Productivity
If axle load transfer is allowed to occur naturally during train operation, then the mechanical structure remains simple, but adhesion utilization decreases
Solution Approach 1:
The patent introduces dynamic control of tractive force distribution that adapts to changing axle load conditions during operation. This dynamic electrical control system allows the train to optimize adhesion utilization in real-time without requiring complex structural modifications to the vehicle frame or suspension systems, thereby improving productivity while maintaining ease of manufacture.
Data Source
AI summary
A method for tractive force distribution for a power-distributed train is provided, which includes: determining a current motor car of a target train; acquiring parameter information of the current motor car; calculating, based on the parameter information, axle load transfer at four axles of the current motor car; calculating, based on the axle load transfer at the four axles of the current motor car, current axle loads on the four axles of the current motor car; and performing, based on the current axle loads on the four axles, distribution of tractive forces of the four axles of the current motor car using an electrical control compensation technology.