Review on Online Identification Methods of Permanent Magnet Synchronous Motor Parameters
Permanent magnet synchronous motor has the advantages of high efficiency,high power factor,measurable rotor parameters and good control performance,for which it has been widely concerned and applied in academia and industry.The stator and rotor parameters of permanent magnet synchronous motor can be obtained in real time by online parameter identification technology,which can not only improve the control accuracy of the motor,but also monitor the health state of the motor online.In this paper,the research status of PMSM parameter on-line identification technology is summarized and summarized.On this basis,the key technical challenges of this technology are summarized and analyzed from the aspects of model equation rank shortage,cross saturation effect,inverter nonlinear effect and parameter identification under extreme conditions.
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