Power Small Class How can cables help a 600 km/h hardcore maglev train "float"?

In the current era of increasingly tight resources and energy and increasingly prominent environmental problems, green travel has increasingly become a way of travel
.
Therefore, promoting the low-carbon development of transportation, giving priority to public transportation, and strengthening rail transit construction are already top priorities
.

Maglev transportation is the development direction
of high-speed environmental protection and economy of rail transit.
The high-speed maglev railway system consists of four main parts: line, vehicle, power supply and operation control system, and the cable, as the blood vessel in the power supply system, undertakes the important task
of providing the electric energy required for the operation of the train.
In this electric power class, we will explore the secrets
behind the research and development of a series of special flexible cables for maglev rail transit.

The market prospect is broad

Maglev transportation high-speed environmental protection, economic and convenient, is an important branch of rail transit, maglev speed can reach 500~1300km/h, with low noise, low loss, easy to turn and strong climbing ability and other advantages, the future development prospects are very broad
.

In order to promote the R&D and application of maglev transportation, CRRC is responsible for leading the national key special research and development of 600km high-speed maglev, which includes two sub-projects of 200km/h medium-speed maglev and 600km/h high-speed maglev, Zhuzhou builds a 4.
5km/h maglev track with a speed of 200km/h, and Qingdao builds a 5.
5km/h maglev track, requiring a total of 168km
of special medium-voltage flexible cables for maglev transportation.
Therefore, the demand for special medium-voltage flexible cables for maglev rail transit is very large
.

Far East Cable adheres to the spirit of "innovation and excellence, never satisfied", according to the use environment and customer needs of cables for maglev tracks, constantly updates and optimizes from the aspects of product structure and materials, and closely follows the development of maglev transportation, and develops a series of special flexible cables for maglev rail transit, contributing to
the development of intelligent transportation and smart cities.

Behind the product development

Medium-voltage special flexible cable (linear drive long stator cable) for maglev transportation is mainly used for power transmission of maglev trains, winding the cable on the maglev track, connecting alternating current, interacting with the electromagnets on the train to provide power, and helping the train "float"
.

In the process of product development, through many test results, the results show that the cable must meet the following three requirements:

1.
There should be a small bending angle when the cable is installed;

2.
The cable is stuck in the fixed stator groove, and the outer diameter accuracy requirements are high;

3.
Long-term outdoor use, the cable faces the requirements
of high weather resistance.

Product performance advantages

In response to these three major needs, the Far East Technology R&D team further carried out experiments to strengthen the performance
of cables from the aspects of conductor, structural design, and sheath materials.
Breaking through the technical bottlenecks, what are the advantages and performance of the medium-voltage special flexible cable for maglev transportation developed by Far East Cable?

The minimum bending radius of the cable can reach 1.
5D (D is the diameter of the cable); the outer diameter of the cable has strict upper and lower tolerances; Unique shielding and sheath structure, the cable has a smooth surface (convenient for the cable to snap into the stator slot); Excellent resilience of the cable sheath (deformation can be recovered after snapping into the stator groove); Excellent electrical properties after bending; The insulation material has good electrical properties and softness; Sheath materials have excellent tensile strength, elongation at break and electrical conductivity; The cable has excellent weather resistance and high and low temperature resistance
.

In September 2015, the flexible cable developed by Far East Orient for maglev rail transit was applied to the medium-speed maglev test line of the National University of Defense Technology, which has been running safely and stably for 5 years, the product has a unique structural design, high bending performance, strict cable outer diameter control, excellent mechanical properties, high and low temperature performance and weather resistance, far ahead
in similar products.

Adhering to green and low-carbon and building a clean and beautiful world is the Chinese dream and the dream of the Far East
.
In the future, Far East Horizon will continue to take root in the market, adhere to innovative research and development, and continuously contribute high-quality products and excellent solutions
in the global action of building a low-carbon ecology.
(Chu Mengqian)