发明授权
- 专利标题: Startup control method of brushless DC motor
- 专利标题(中): 无刷直流电机启动控制方法
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申请号: US11183956申请日: 2005-07-19
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公开(公告)号: US07095204B2公开(公告)日: 2006-08-22
- 发明人: Kwang Woon Lee , Dae Kyong Kim , Sang Taek Lee , Hyen Young Choi
- 申请人: Kwang Woon Lee , Dae Kyong Kim , Sang Taek Lee , Hyen Young Choi
- 申请人地址: KR Suwon-Si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-Si
- 代理机构: Staas & Halsey LLP
- 优先权: KR10-2004-0108214 20041217
- 主分类号: H02P1/46
- IPC分类号: H02P1/46
摘要:
A startup control method of a BLDC motor is disclosed. The method can control the BLDC motor to prevent the generation of a transient current such that the vibration of the BLDC motor can be reduced at the startup stage and perform a stable conversion into a sensorless operation mode such that the startup failure rate of the BLDC motor can be reduced. The startup control method includes commutating a current applied to stator windings according to a rotor position. The method of operating the BLDC motor includes a rotor position that is forcibly aligned and so that phase commutation is performed, a back-electromotive force (back-emf) is detected from a lead voltage of a phase of a voltage which is not applied thereto after performing phase commutation and a determination is performed as to whether the detected back-emf is in a rising interval. The lead voltage of the phase of the voltage which is not applied thereto is integrated, such that if the back-emf is in a rising interval and if an instance that the integration result is greater than a predetermined value a phase commutation time point is set and conversion into a sensorless operation mode is performed if the back-emf detected from the lead voltage is in a stable interval, based on a frequency of the voltage applied to the stator winding.
公开/授权文献
- US20060132075A1 Startup control method of brushless DC motor 公开/授权日:2006-06-22