Abstract

Permanent magnet synchronous motor (PMSM) is becoming a favorable motor for electric vehicle. This is because of its well-known features like better torque to weight ratio, larger power factor, high efficiency, and reliability as against its counterpart induction motor (IM). The paradigm of control of drives has been shifted because of vector control (VC) and field-oriented control (FOC). Speed control using proportional-and-integral (PI) controllers and many nonlinear controllers is popular in the heavy performance application of PMSM. Applications like robotics, CNC, and electric vehicle demand for dynamic control over a large operation range including four-quadrant operations. This work envisages control of PMSM drive for electric vehicles. Sliding mode control (SMC) algorithm is used in order to achieve higher energy efficiency, in constant power and constant torque regions. Further, higher order sliding mode control (HOSMC) algorithm is also tested for robustness against disturbances and parameter variations, nonlinearity load patterns, and, importantly, EV. HOSMC not only reduces the ripples caused by SMC but also offer dynamic speed and torque response with optimized control input. Many simulations are carried on MATLAB Simulink platform to prove the effectiveness of SMC and HOSMC.

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