Abstract
Nowadays, the researches on permanent magnetic synchronous motors (PMSMs) as power source of electric vehicles (EVs) have obtained more and more attention. Torque control technology which is one of popular strategies applied in EVs raises higher standards for torque response speed and accuracy of PMSMs control system. To tract the reference torque quickly, a sliding mode torque controller which can decouple q-axis and d-axis currents is proposed in this paper. To eliminate the chattering phenomenon an exponential reaching law is adopted. The proposed method also can guarantee the robust control of PMSMs under model parameters (resistance, inductance) and load torque variations. Simulation results show the effectiveness and robustness of the proposed control approach.
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