发明授权
- 专利标题: Control system for low speed switched reluctance motor
- 专利标题(中): 低速开关磁阻电机控制系统
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申请号: US351504申请日: 1989-05-09
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公开(公告)号: US4933620A公开(公告)日: 1990-06-12
- 发明人: Stephen R. MacMinn , James W. Sember
- 申请人: Stephen R. MacMinn , James W. Sember
- 申请人地址: VA Salem
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: VA Salem
- 主分类号: H02P6/06
- IPC分类号: H02P6/06 ; H02P25/08
摘要:
A method and apparatus for improving the operation of a switched reluctance motor at low speed incorporates an advance angle regulator which regulates the firing angle of current pulses to the switched reluctance motor so that over a wide range of speeds and levels for direct current source voltages, the winding current reaches a commanded set point at a commanded angle. The advance angle regulator may comprise a closed loop regulator which includes apparatus for detecting the actual angular position at which motor current reaches a commanded level and adjusts the turn-on angle to shift the angle at which current reaches its desired level to a desired angle. The regulator incorporates a feedforward portion and an integral portion. The feedforward portion is utilized primarily to accommodate situations in which there is no current feedback. The integral portion provides the primary regulation when current is regulated to its desired value. The regulator causes the torque versus current command to have a transfer function which does not depend upon speed or DC source voltage over a wide range of speed, voltage and torque.
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