As the longest operating country in the world, China High Speed ​​Rail is said to have occupied the top eight in the world. Under the background of domestic advancement and accelerated foreign output, the degree of autonomy can only be continuously improved.

According to the report of Science and Technology Daily, this week, China's highest grade 6500V high-speed rail "China Core" came out and was independently created by China CRRC Yongji Electric Company. The birth of this "Chinese core" means that China has the world's highest voltage level IGBT module design and manufacturing technology, and has reached the level of commercial application.

Each 6500V/200A IGBT module is packaged in eight nail-sized “chips,” but this is a slightly larger IGBT module than the manual, but it is one of the most magical components in high-speed trains and high-power locomotives. Affect whether the high-speed rail train can start instantly, whether it can comfortably accelerate, and whether it can stabilize parking.

High-voltage and high-power 6500V/200A IGBT modules adopt technology of welding and bonding to achieve multi-chip parallel connection of domestic IGBT chips and FRD chips, and to complete the integrated modular package design of "China Core" 6500V/200A IGBTs. Similar foreign products are used in subway and railway locomotive converters. At present, the IGBT module has completed three stages of power unit, auxiliary converter cabinet and locomotive loading. Among them, the locomotives are loaded on the train and run over 50,000 kilometers.

High-speed rail trains and high-power locomotives represent almost the world's most difficult electrical energy conversion. The high and low levels of IGBT development capability of high-speed trains and high-power locomotives are fundamental signs of measuring the level of rail transit equipment manufacturing. The realization of the "IGBT chip - IGBT module - traction drive system" of the entire chain of autonomy, master the traction system of one of the three core components of high-speed trains, is the dream of rail transit equipment enterprises.

The birth of the domestic 6500V/200A IGBT module laid the foundation for the end of China's high-speed rail "hollowing." It marks that China has completely independent intellectual property rights of the world's highest voltage level IGBT module design and manufacturing technology, and achieve commercial application level, is replacing the foreign similar products in China's subway and railway locomotive converter "core" Position, to enhance the "going out" competitiveness of China's equipment manufacturing industry; and in promoting China's high-voltage high-power IGBT chip design - manufacturing - packaging - testing - application industry chain improvement and formation, while promoting the realization of "Made in China 2025."

High-voltage IGBTs are used not only in high-speed rails, but also in rail transit, smart grids, wind power generation, and other fields, all of which can improve the efficiency of electricity use and the quality of electricity, saving energy by more than 30%.

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