Implementation and applications of sensorless control for synchronous machines in industrial inverters

The paper discusses the state of the art of implementations and applications of sensorless control in industrial frequency inverters. Implementations for speed and position controlled drives are shown using either EMF based flux estimators or an Extended Kalman Filter (EKF) with signal injection to evaluate the saliencies of the machines for speed and position detection. Applications are presented for both methods, and it is discussed why the numbers of industrial applications are limited today and in which application fields the propagation of sensorless drives can be extended.

[1]  Ralph Kennel,et al.  Sensorless position control of permanent magnet synchronous machines without limitation at zero speed , 2002, IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02.

[2]  Dipl.-Ing. Jürgen Kiel.  Sensorless speed control of permanent magnet synchronous machines for low speed and standstill , 2002 .

[3]  R. Paes,et al.  Field oriented control of a synchronous drive , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[4]  H. Wertz,et al.  Design of extended Kalman filters for high performance position control of electrical drives , 1999, 1999 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (Cat. No.99TH8399).

[5]  M. Schroedl,et al.  Sensorless control of AC machines at low speed and standstill based on the "INFORM" method , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.