Influence of PM flux variation and magnetic saturation on sensorless control for interior permanent magnet synchronous motors

Influence of permanent magnet flux variation and magnetic saturation on sensorless control for interior permanent magnet synchronous motors (IPMSM) is evaluated. By using FEM analysis, partial differential values of flux-linkage are calculated directly and precisely in a short time. High-speed analysis of a motor voltage equation is realized by interpolating table data of calculated partial differential values. Analyzed results show good correlation with experimental results. The performance of sensorless control is greatly improved using analyzed results and the influence of permanent magnet flux variation is predicted well. The proposed method is very useful for designing control algorithms considering the influence of permanent magnet flux variation and magnetic saturation.

[1]  Koji Fujiwara,et al.  3-D finite element method for analyzing magnetic fields in electrical machines excited from voltage sources , 1988 .

[2]  M. Sanada,et al.  Influence of Magnetic Saturation on Sensorless Control for Interior Permanent-Magnet Synchronous Motors With Concentrated Windings , 2006, IEEE Transactions on Industry Applications.

[3]  Robert D. Lorenz,et al.  Using multiple saliencies for the estimation of flux, position, and velocity in AC machines , 1997 .

[4]  G. S. Buja,et al.  Control characteristics of a SRM drive taking into account the motor saturation , 1990, [Proceedings] IECON '90: 16th Annual Conference of IEEE Industrial Electronics Society.

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

[6]  A. Toba,et al.  Sensor-less torque control of salient-pole synchronous motor at zero speed operation , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[7]  A. V. Radun,et al.  Design considerations for the switched reluctance motor , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[8]  S. Shinnaka.  New "mirror-phase vector control" for sensorless drive of permanent-magnet synchronous motor with pole saliency , 2004, IEEE Transactions on Industry Applications.

[9]  Shigeo Morimoto,et al.  ■ High-Speed Analysis of 3-phase High Frequency Voltage Input Sensorless Control Fed by PWM Inverters Considering Magnetic Saturation , 2006 .

[10]  R. Krishnan,et al.  Dynamic analysis of an SRM drive system , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[11]  A. Toba,et al.  Sensorless torque control of salient-pole synchronous motor at zero-speed operation , 1999 .

[12]  Toshihiko Noguchi,et al.  Initial rotor position estimation method of sensorless PM synchronous motor with no sensitivity to armature resistance , 1998, IEEE Trans. Ind. Electron..