发明授权
US5850132A Apparatus used with AC motors for compensating for turn on delay errors
失效
用于交流电机的装置用于补偿开启延迟误差
- 专利标题: Apparatus used with AC motors for compensating for turn on delay errors
- 专利标题(中): 用于交流电机的装置用于补偿开启延迟误差
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申请号: US887488申请日: 1997-07-02
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公开(公告)号: US5850132A公开(公告)日: 1998-12-15
- 发明人: Luis J. Garces
- 申请人: Luis J. Garces
- 申请人地址: WI Milwaukee
- 专利权人: Allin-Bradley Company, LLC
- 当前专利权人: Allin-Bradley Company, LLC
- 当前专利权人地址: WI Milwaukee
- 主分类号: G05B11/28
- IPC分类号: G05B11/28 ; H02M7/5387
摘要:
An apparatus for compensating for turn on delay distortions generated by a PWM controller. When turn on delay compensation is added to a PWM controller command signal and current zero crossings are inaccurately determined, compensation at the zero crossings causes further distortion which is reflected in a d and q-axis current vector frequency. Deviations from an ideal vector frequency are identified and used to modify command voltages to eliminate the zero crossing errors.