Modeling of Cross-Coupling Magnetic Saturation in Signal-Injection-Based Sensorless Control of Permanent-Magnet Brushless AC Motors

An improved brushless AC motor model is proposed for use in signal-injection-based sensorless control schemes by accounting for cross-coupling magnetic saturation between the d- and q-axes. The incremental self- and mutual-inductance characteristics are obtained by both finite-element analysis and measurements, and have been successfully used to significantly reduce the error in the rotor position estimation of sensorless control

[1]  S. Sul,et al.  Sensorless drive of surface-mounted permanent-magnet motor by high-frequency signal injection based on magnetic saliency , 2003 .

[2]  Hirofumi Akagi,et al.  Implementation and position control performance of a position-sensorless IPM motor drive system based on magnetic saliency , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[3]  M. Trlep,et al.  Evaluation of saturation and cross-magnetization effects in interior permanent magnet synchronous motor , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[4]  R. D. Lorenz,et al.  Rotor position and velocity estimation for a salient-pole permanent magnet synchronous machine at standstill and high speeds , 1998 .

[5]  P. Guglielmi,et al.  Cross saturation effects in IPM motors and related impact on zero-speed sensorless control , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..