Distribution and loading structure of levitation traction system of medium-low-speed magnetic-levitation train

Abstract

The invention relates to a distribution and loading structure of a levitation traction system of a medium-low-speed magnetic-levitation train. The distribution and loading structure comprises small-sized traction inverters, magnetic-levitation controllers and multiple bogie modules, the bogie modules are installed at the bottom of a carriage and evenly distributed along the central axis of the carriage, one magnetic-levitation controller and one small-sized traction inverter are installed above each of the two sides of each bogie module, and the magnetic-levitation controllers and the small-sized traction inverters are distributed between the bogie modules and the bottom of the carriage, so that distribution and loading of the whole carriage are even. Compared with the prior art, the distribution and loading structure has the advantages that the load of the whole carriage is even, and during parameter debugging, the problem is solved that due to the uneven load, PID control parametersin the magnetic-levitation controllers are coordinated; convenience is provided for quickly adjusting the levitation parameters, and the consistency of the levitation control parameters at all the levitation points is guaranteed.

Description

technical field [0001] The invention relates to the field of maglev trains, in particular to a distribution structure for a suspension traction system of a medium-low speed maglev train. Background technique [0002] At present, the medium and low speed maglev train has gradually become a new type of rail transportation due to its advantages in low energy consumption, high environmental protection, and low wear and tear. The medium and low-speed maglev trains are suspended and driven by the suspension traction system, and the principle of same-sex repulsion and opposite-sex attraction is used to overcome the unavoidable contact wear phenomenon of traditional wheel-rail vehicles, so that the train can be stably suspended under the target suspension gap run. [0003] Such as figure 1 and figure 2 As shown, each car of the existing medium-low speed maglev train is composed of five bogie modules, and each bogie module has two levitation controllers and a traction motor on bo...

AI Technical Summary

Problems solved by technology

However, in the current suspension traction system of trains, a large-scale traction inverter is used to provide the necessary power for the suspension and traction system in the carriage. The distribution structure has the following problems: 1. Due to the The volume and weight are large, and the wiring and distribution need to be considered when installing on the bogie, which will seriously affect the stable debugging of the PID control method. For example, when the distribution of the traction inverter is close to a certain side, due to gravity Due to the effect of uneven distribution, the PID control parameters on this side will have a large change, which will increase the difficulty of debugging

2. The 5 traction motors on one side of each car adopt the series mode, and the 10 traction motors on both sides of the vehicle adopt the "five-five" parallel mode. The 10 motors share one traction inverter without considering the system redundancy. When this When a traction inverter fails, it will directly lead to the suspension of trains and other phenomena. It is necessary to rely on trailers and rescue wheels to drag the entire vehicle into the warehouse for maintenance, which will undoubtedly increase maintenance costs and cause certain safety hazards

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