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| This paper researches a sensorless control method of flux-switching permanent linear magnet with high-frequency signal injection on the basis of salient pole verification, through the analysis of FSPMLM structure. A high frequency sinusoidal voltage signal is superimposed into the estimated d-axis, and the mover position can be demodulated after q-axis current is regulated, which is relative to error angle. Ultimately the mover position and speed can be obtained exactly. The paper also contributes to an improved magnetic pole identification based on space vector pulse width modulation for and arbitrary initial position to resolve starting problem of IPMSM. At last, the simulation model of FSPMLM and control system are constructed and all results of simulation demonstrate the accuracy and effectiveness of the presented approach, this method is well suitable for the application. |
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| Keywords:flux-switching permanent linear magnet motor (FSPML-M), sensorless drive, high-frequency signal injection method, N/S polarity determination |
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