发明授权
- 专利标题： Method and device for detecting a malfunction of an electric machine through the modulation of variables influencing the torque of the machine
- 专利标题（中）： 用于通过调节影响机器转矩的变量来检测电机故障的方法和装置
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申请号： US13983447申请日： 2011-12-07
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公开(公告)号： US09213065B2公开(公告)日： 2015-12-15
- 发明人: Jens-Werner Falkenstein
- 申请人： Jens-Werner Falkenstein
- 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
- 代理机构： Michael Best & Friedrich LLP
- 优先权： DE102011003573 20110203
- 国际申请： PCT/EP2011/072110 WO 20111207
- 国际公布： WO2012/103975 WO 20120809
- 主分类号： G01R31/34
- IPC分类号： G01R31/34
摘要：
A method for detecting the malfunction in a three-phase synchronous electric machine by modulating variables. Two variables, which influence the torque of the electric machine are modulated. The first variable represents the q component of the stator current. The second variable represents the rotor flux. The variables are modulated by superimposing on their base signals, a test signal. Under faultless operation of the machine, there is no effect caused by the modulated variables on an electrical or magnetic parameter of the machine. When the modulated variables cause an effect on an electrical or magnetic parameter of the machine, a fault condition is detected.
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