发明名称 |
Sensorless Method and Related Device for Starting a Three-phase Brushless Direct-current Motor |
摘要 |
A sensorless method for starting a three-phase brushless direct-current motor includes generating a start-up control signal, a start mode selection signal, and a control signal commutation period; switching to a start mode according to the start mode selection signal; implementing a position aligning procedure according to the start-up control signal and the control signal commutation period; detecting a zero crossing point of back electromotive forces during each control signal commutation period; outputting a sensorless mode selection signal while detecting the zero crossing points of the back electromotive forces during consecutive control signal commutation periods; switching to a sensorless mode according to the sensorless mode selection signal; and detecting a zero crossing point of back electromotive forces in the sensorless mode to determine a starting result of the three-phase brushless direct-current motor.
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申请公布号 |
US2010090631(A1) |
申请公布日期 |
2010.04.15 |
申请号 |
US20080327814 |
申请日期 |
2008.12.04 |
申请人 |
YANG CHIA-TAI;LI CHING-SHENG;CHEN KUN-MIN;TENG TZU-CHENG |
发明人 |
YANG CHIA-TAI;LI CHING-SHENG;CHEN KUN-MIN;TENG TZU-CHENG |
分类号 |
H02P6/18;H02P6/20 |
主分类号 |
H02P6/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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