Sensorless performance optimization of single-phase induction motors

Single-phase induction motors suffer from low torque average and high torque pulsations. These problems can be overcome by a switching capacitor in series with the stator auxiliary winding. However, the switching of the capacitor requires the motor speed signal over the entire speed range to provide performance optimization in terms of high torque average and low torque pulsations. In this paper a simple speed estimation method for single-phase induction motors is proposed in the stationary reference frame to overcome the problems associated with the use of speed sensors. Based on this method, a sensorless torque optimization system is suggested. The system is then validated by extensive simulation results. The speed estimation method was used in the sensorless control of the motors.

[1]  Francisco A. S. Neves,et al.  Single-phase induction motor drives with direct torque control , 2002 .

[2]  J.F.M. de Almeida,et al.  Fuzzy logic based maximum torque control for a single-phase induction motor , 1999, IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029).

[3]  A.M.N. Lima,et al.  Single-phase induction motor drives systems , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[4]  Scott D. Sudhoff,et al.  Analysis of a single-phase induction machine with a shifted auxiliary winding , 1996 .

[5]  Tian-Rua Liu,et al.  Adjustable switched capacitor control for a single-phase induction motor , 1993, Proceedings of IECON '93 - 19th Annual Conference of IEEE Industrial Electronics.

[6]  Thomas A. Lipo,et al.  Adjustable-speed drive with single-phase induction machine for HVAC applications , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[7]  S. Vaez-Zadeh,et al.  High average-low pulsating torque operation of single phase induction motors , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[8]  T.A. Lipo,et al.  Single phase induction motor with an electronically controlled capacitor , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[9]  Paul C. Krause,et al.  Analysis of electric machinery , 1987 .

[10]  Tian-Hua Liu A maximum torque control with a controlled capacitor for a single-phase induction motor , 1995, IEEE Trans. Ind. Electron..

[11]  S. Vaez-Zadeh,et al.  DSP based optimal torque control of single-phase induction motors , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).