The most important breakthrough is the heart of high-speed rail, the IGBT chip breakthrough.
IGBY chip, also known as insulated gate bipolar transistor, is a composite fully controlled voltage-driven power semiconductor device composed of BJT (bipolar triode) and MOS (insulated gate type field effect tube). It is the core device of energy conversion and transmission.
High-voltage and high-power density IGBT is widely used in the traditional power, machinery, mining and metallurgy to 4C industries, as well as in rail transit, smart grid, aerospace, new energy equipment, and strategic emerging industries such as special equipment.
It can be said that it is not only the heart of high-speed rail, but also the \"nuclear core\" of most high-tech industries in the new era.
In simple terms, the device acts as a small transformer. On the high-speed rail, it is how the acceleration ability of the car, how much the maximum speed, whether the energy efficiency is high, whether the car can start instantly, whether the car is stable, and whether the parking is stable all depends on its performance.
IGBT accounts for about 50% of the cost of the high-speed rail power system and 5% of the cost of the vehicle, which is the original of the low cost of the entire high-speed rail, and the first cost is the battery.