发明授权
- 专利标题： Positional recognition using BEMF zero crossover recognition of a rotor of an electronically commutated electric machine with two coil sections of different inductances
- 专利标题（中）： 使用不同电感的具有两个线圈段的电子换向电机的转子的BEMF零交叉识别的位置识别
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申请号： US12737996申请日： 2009-08-03
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公开(公告)号： US08212509B2公开(公告)日： 2012-07-03
- 发明人: Wolfgang Krauth , Johannes Rehagen , Eike Hermann Timm
- 申请人： Wolfgang Krauth , Johannes Rehagen , Eike Hermann Timm
- 申请人地址： DE Stuttgart
- 专利权人： Robert Bosch GmbH
- 当前专利权人： Robert Bosch GmbH
- 当前专利权人地址： DE Stuttgart
- 代理商 Ronald E. Greigg
- 优先权： DE102008041856 20080908
- 国际申请： PCT/EP2009/060008 WO 20090803
- 国际公布： WO2010/026008 WO 20100311
- 主分类号： H02P6/00
- IPC分类号： H02P6/00
摘要：
The invention relates to a method for positional recognition of a rotor of an electronically commutated electric machine, in particular an electric motor, in which a zero crossover of a voltage induced in a coil section of the rotor or stator is used for positional recognition. According to the invention, to determine the zero crossover the coil section is briefly powered down. A rotor/stator is used, comprising at least two coil sections, one of which has a lower inductance relative to the other one, and preferably only the coil section with the lower inductance is used for the positional recognition.
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