Traction inverters for hybrid and pure electric applications from Curtiss-Wright
Curtiss-Wright Industrial Group's new family of traction inverters operates with multiple motor technologies—including AC induction, permanent-magnet synchronous (PMS), and interior permanent-magnet (IPM) types—and is designed to offer a high level of self-protection with both current and transistor temperature measuring locally to the IGBTs. A torque motor-control mode is available for hybrid applications, and speed mode for pure-electric applications or DC bus voltage mode. In DC bus mode, the inverter can moderate adverse and damaging voltages resulting from situations including regenerative braking. The WTI family offers a versatile connection to master control systems by either J1939 or CANbus protocols. A customizable, discrete interface also supports digital, analog, and solenoid-drive control options.