Invention Application
- Patent Title: Dynamic IGBT Gate Drive For Vehicle Traction Inverters
- Patent Title (中): 动力IGBT栅极驱动车辆牵引变频器
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Application No.: US14506746Application Date: 2014-10-06
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Publication No.: US20160099665A1Publication Date: 2016-04-07
- Inventor: Lihua Chen , Dong Cao , Shailesh Shrikant Kozarekar , Shahram Zarei , Hongjie Wu , Yuqing Tang
- Applicant: Ford Global Technologies, LLC
- Main IPC: H02P6/14
- IPC: H02P6/14 ; H02M7/539 ; H02M1/00

Abstract:
A hybrid electric vehicle includes a traction battery, traction motor and power inverter therebetween. The power inverter converts the DC power of the traction battery to AC power to drive each phase of the traction motor. The power inverter includes Insulated Gate Bipolar junction Transistors (IGBTs) to modulate the power to the traction motor. The speed at which the IGBTs are modulated impacts the system performance including power loss, voltage overshoot and current overshoot. Using a dual emitter IGBT to provide a current mirror of the drive current, circuitry may be used with the gate drive circuitry such that the gate drive speed may be dynamically adjusted based on characteristics including temperature and traction motor rotational speed.
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