The main purpose of the traction converter is to convert the DC voltage obtained from the new energy into a three-phase voltage, which is used to control the traction motor to drive the vehicle in traction, inert and braking conditions.Traction converter IGBT semiconductor device uses circulating water cooling for effective cooling, the inverter structure is very compact, through the internal and external cooling cycle, the heat of the inverter is effectively passed out to prevent overheating. Small size, large energy.