Research on switched reluctance machine drive topology and control strategies for electric vehicles

The electric drive system is one of the key technologies for electric vehicles. First, the energy flow of an electric vehicle is analyzed in the driving, braking, and charging working states. After that, a drive topology that can achieve 3 working states is proposed based on the driving characteristics of a switched reluctance machine. In the driving state, the boost mode of a front-end converter is used to achieve different operating conditions, including low speed with a light load or high speed with a heavy load. In the braking state, the front-end converter is used to implement smooth switching between initial excitation and braking energy feedback. In the charging state, a new power factor correction circuit is proposed, and the motor windings and power converter constitute the onboard charger, whose power factor is correctable. According to the proposed drive topology, the control strategies for 3 working states are put forward. Finally, an experimental platform is built to verify the correctness of the control strategies as well as the flexibility of the whole system.

PDF

___

[1] Ehsani M, Gao Y, Emadi A. Modern Electric, Hybrid Electric and Fuel Cell Vehicles: Fundamentals, Theory, and Design. 2nd ed. New York, NY, USA: CRC Press, 2010.
[2] Hartani K, Bourahla M, Miloud Y, Sekour M. Electronic differential with direct torque fuzzy control for vehicle propulsion system. Turk J Electr Eng Co 2009; 17: 2138.
[3] Krishnan R. Switched Reluctance Motor Drives: Modeling, Simulation, Analysis, Design, and Applications. Boca Raton, FL, USA: CRC Press, 2001.
[4] Yahia H, Liouane N, Dhifaoui R. Multiobjective differential evolution-based performance optimization for switched reluctance motor drives. Turk J Electr Eng Co 2013; 21: 10611076.
[5] Inderka RB, Menne M, Doncker RWAAD. Control of switched reluctance drives for electric vehicle applications. IEEE T Ind Electron 2002; 49: 4853.
[6] Xue XD, Cheng KWE, Lin JK, Zhang Z, Luk KF, Ng TW, Cheung NC. Optimal control method of motoring operation for SRM drives in electric vehicles. IEEE T Veh Technol 2010; 59: 11911204.
[7] Takeno M, Chiba A, Hoshi N, Ogasawara S, Takemoto M, Rahman MA. Test results and torque improvement of the 50-kW switched reluctance motor designed for hybrid electric vehicles. IEEE T Ind Appl 2012; 48: 13271334.
[8] Rahman KM, Fahimi B, Suresh G, Rajarathnam AV, Ehsani M. Advantages of switched reluctance motor applications to EV and HEV: design and control issues. IEEE T Ind Appl 2000; 36: 111121.
[9] Chen H, Gu JJ. Implementation of the three-phase switched reluctance machine system for motors and generators. IEEE/ASME T Mech 2010; 15: 421432.
[10] Ronanki D, Parthiban P. PV-battery powered direct torque controlled switched reluctance motor drive. In: IEEE 2012 Power and Energy Engineering Conference; 2729 March 2012; Shanghai, China. New York, NY, USA: IEEE. pp. 14.
[11] Ortuzar M, Moreno J, Dixon J. Ultracapacitor-based auxiliary energy system for an electric vehicle: implementation and evaluation. IEEE T Ind Electron 2007; 54: 21472156.
[12] Solero L. Nonconventional on-board charger for electric vehicle propulsion batteries. IEEE T Veh Technol 2001; 50: 144149.
[13] Weng KT, Pollock C. Low-cost battery-powered switched reluctance drives with integral battery-charging capability. IEEE T Ind Appl 2000; 36: 16761681.
[14] Sul SK, Lee SJ. An integral battery charger for four-wheel drive electric vehicle. IEEE T Ind Appl 1995; 31: 10961099.
[15] Narla S, Sozer Y, Husain I. Switched reluctance generator controls for optimal power generation and battery charging. IEEE T Ind Appl 2012; 48: 14521459.
[16] Erickson RW. Fundamentals of Power Electronics. New York, NY, U SA: Chapman and Hall, 1997.