发明名称 |
Driving method and driver of brushless dc motor |
摘要 |
A method of driving a brushless DC motor includes operations of rectifying an AC voltage of an AC power source by a rectifier circuit to which a capacitor is coupled between its output terminals and the AC voltage of the AC power source is input; driving the motor by an inverter coupled to the rectifier circuit; detecting a rotor position of the motor by a position detector based on a motor back electromotive force or a motor current; estimating the rotor position by a position estimator when the rotor position is not detectable by the position detector; and controlling the inverter by a controller based on the rotor position detected by the position detector or the rotor position estimated by the position estimator.
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申请公布号 |
US2007145919(A1) |
申请公布日期 |
2007.06.28 |
申请号 |
US20040579945 |
申请日期 |
2004.11.16 |
申请人 |
HAMAOKA KOJI;TAKEOKA YOSHINORI |
发明人 |
HAMAOKA KOJI;TAKEOKA YOSHINORI |
分类号 |
H02P7/06;H02P6/00;H02P6/16;H02P6/18 |
主分类号 |
H02P7/06 |
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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