Transportation

he revolution of power fuses has promoted the development of traction technology for rail vehicles, and the advantages of AC drives can be clearly displayed.

After entering the 1980s, along with the development and maturity of GTO devices, the development of MOS devices has flourished. Insulated gate bipolar transistors (IGBT) dominate. So far, power electronic devices have developed from current-controlled devices to voltage-controlled devices. In the 1990s, power electronic devices were also developing toward intelligence and modularization, striving to integrate power devices, drive circuits, protection circuits, and detection circuits into one chip or module, making the devices more compact and intelligent. Here, the power fuse plays the role of protector, and the guarantee of its quality is very important.