发明名称 ENCODERLESS ROTOR POSITION DETECTION METHOD AND APPARATUS IN AN ELECTRIC MOTOR
摘要 A rotating flux vector is set up in a motor or generator's rotor by simultaneously energizing two phase windings while the rotor remains stationary, wherein each phase winding may be energized by the same or different excitation voltages. Respective tap voltages are then recorded at this first flux position. Thereafter, the two phase windings are simultaneously energized by another voltage excitation, wherein each phase is energized at the same or different voltages, causing a new flux position to occur. Once again, respective tap voltages are recorded. This process may be repeated for various rotations of the motor's flux. The measured tap voltages are evaluated to determine the location of the rotor, without actually moving it. The present invention is applicable to SR and non-SR machines having a plurality of phases and pole configurations.
申请公布号 EP1208641(A1) 申请公布日期 2002.05.29
申请号 EP20000943126 申请日期 2000.06.23
申请人 BALDOR ELECTRIC COMPANY 发明人 DISTER, CARL, J.
分类号 H02P6/18;H02P25/08 主分类号 H02P6/18
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