M. Vasudevan,∗ R. Arumugam,∗ and S. Paramasivam∗
Hybrid vehicle, induction motor, direct torque control, vehicle dynamics, FUDS data
The authors develop and present a new model of a hybrid vehicle and control strategy. The hybrid vehicle is a general class of vehicles in which the prime power and the driveline are decoupled. The configuration considered in this paper consists of a diesel engine driving a permanent magnet generator that supplies rectified power to a DC link, which in turn supplies power through an inverter to an induction motor for traction. The control system proposed is hierarchical with controllers at the component, subsystem, and system level. Direct torque control (DTC) algorithm is applied to control the induction motor. The subsystem controllers consist of feedback control loops encompassing sliding mode, bang-bang, and conventional control laws. At the system level, a logic controller balances source and loads on the system bus. All models and controllers are simulated using MATLAB and SIMULINK computer program. The performance and scalability of each subsystem controller is demonstrated in stand-alone computer simulations. The modelling and control strategy proposed in this paper provides a robust, scalable system model for simulating the effects of standard driving cycles on the power system of a given vehicle configuration over long time scales.
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