A New Converter Topology for Switched Reluctance Motor Drive

Switched reluctance motor, which is robust with high torque ratio and excellent performance, is becoming a competitive replacement for induction motor drives. Tlhe simiplified converter topology with unipolar currents of SRM eliminates the problems of shoot through faults and makes the control circuitry simple. A new converter topology is proposed in this paper. A sensor less circuit with SEPIC working as Power Factor Preregulator (PFP) is used to improve the power factor. The advantage of better current regulation and high power factor with simplified gate circuit is achieved at low cost. The proposed converter is suitable for DC and AC low power and high power applications.

[1]  S. Vukosavic,et al.  SRM inverter topologies: a comparative evaluation , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[2]  G. H. Rim,et al.  A choppingless converter for switched reluctance motor with unity power factor and sinusoidal input current , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[3]  C. Pollock,et al.  Power factor correction in switched reluctance motor drives , 1998 .

[4]  J. Sebastian,et al.  An overview of power factor correction in single-phase off-line power supply systems , 1994, Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.

[5]  Timothy J. E. Miller,et al.  Switched Reluctance Motors and Their Control , 1993 .

[6]  Robert L. Steigerwald,et al.  Development of a Unipolar Converter for Variable Reluctance Motor Drives , 1987, IEEE Transactions on Industry Applications.

[7]  I. Krishnan,et al.  Effect of power factor correction circuit on switched reluctance motor drives for appliances , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[8]  Javier Uceda,et al.  The discontinuous conduction mode Sepic and Cuk power factor preregulators: analysis and design , 1997, IEEE Trans. Ind. Electron..