发明名称 |
Flux observer in a sensorless controller for permanent magnet motors |
摘要 |
A control system includes a field oriented controller that receives a torque command and that generates phase voltages for an electric machine. A first transformation module receives stator terminal currents and generates d-axis and q-axis stationary frame currents. An open loop flux observer receives d-axis and q-axis stationary frame voltage commands and the d and q-axis stationary frame currents. The open loop flux observer includes a vector cross product calculator that generates an error signal that is proportional to an angular difference between an estimated stator flux and a computed stator flux and a proportional integral controller that generates an estimated rotor angular position based on the error signal. A second transformation module receives the d-axis and q-axis stationary frame currents and the estimated rotor angular position and generates d-axis and q-axis synchronous reference frame feedback currents that are output to the field oriented controller.
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申请公布号 |
US6841969(B1) |
申请公布日期 |
2005.01.11 |
申请号 |
US20030669918 |
申请日期 |
2003.09.24 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
SCHULZ STEVEN E.;PATEL NITINKUMAR R. |
分类号 |
H02P21/14;(IPC1-7):H02P6/18 |
主分类号 |
H02P21/14 |
代理机构 |
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