An adaptive low-ripple torque control of switched reluctance motor for small electric vehicle

This paper proposes a low-ripple instantaneous torque control method based on an adaptive torque sharing function for use with switched reluctance motor. The conventional torque sharing function technique is most effective when the SRM operates in low speed range and its performance deteriorates at higher speed. The proposed adaptive torque sharing function has the active period of each phase that can be automatically adjusted corresponding to the operating speed. The effectiveness of the proposed method is verified by the computer simulations for a 1.5 kW, 6/4 SRM with rated speed 1,500 r/min.

[1]  James S. Thorp,et al.  Instantaneous Torque Control of Electric Motor Drives , 1987, IEEE Transactions on Power Electronics.

[2]  Rik W. De Doncker,et al.  Control of switched reluctance drives for electric vehicle applications , 2002, IEEE Trans. Ind. Electron..

[3]  R.B. Inderka,et al.  DITC-direct instantaneous torque control of switched reluctance drives , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[4]  M. Ehsani,et al.  Advantages of switched reluctance motor applications to EV and HEV: design and control issues , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[5]  Shuanghong Wang,et al.  Implementation of a 50-kW four-phase switched reluctance motor drive system for hybrid electric vehicle , 2005 .

[6]  Jin-Woo Ahn,et al.  Instantaneous Torque Control of SRM with a Logical Torque Sharing Method , 2007, 2007 IEEE Power Electronics Specialists Conference.

[7]  Changhwan Choi,et al.  A new torque control method of a switched reluctance motor using a torque-sharing function , 2002 .

[8]  Iqbal Husain,et al.  Torque ripple minimization with indirect position and speed sensing for switched reluctance motors , 1999, IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029).

[9]  R. S. Wallace,et al.  A balanced commutator for switched reluctance motors to reduce torque ripple , 1992 .

[10]  S. Schulz,et al.  Design of high efficiency and high density switched reluctance motor for vehicle propulsion , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).