发明申请
- 专利标题: METHOD AND APPARATUS TO DETERMINE ROTATIONAL POSITION OF AN ELECTRICAL MACHINE
- 专利标题(中): 确定电机旋转位置的方法和装置
-
申请号: US11743901申请日: 2007-05-03
-
公开(公告)号: US20080272717A1公开(公告)日: 2008-11-06
- 发明人: Sean E. Gleason , Steven E. Schulz , Patrick M. Prihoda
- 申请人: Sean E. Gleason , Steven E. Schulz , Patrick M. Prihoda
- 主分类号: H02P5/00
- IPC分类号: H02P5/00 ; B60K6/26 ; G05B1/06 ; G05B11/06 ; G05B19/02
摘要:
A control system and method to determine position of a rotor relative to a stator for a synchronous multipole electrical machine is presented, including one for application on a fuel/electric hybrid powertrain for a vehicle. The machine includes a stator, a rotor, and a rotor position sensing mechanism. The control system controls the electrical machine, in conjunction with an electrical storage device and an inverter, using algorithms and calibrations which derive a rotor position based upon a sensorless position sensing technique, and determine an offset from a sensed rotor position. Electrical output from the inverter to the machine is controlled based the offset, which is stored non-volatile memory. A rotor position is derived based upon a sensorless position sensing technique during initial machine operation after startup of the machine, and includes operation in a torque-generative mode and in an electrical energy-generative mode.