Abstract: “Permanent magnet synchronous motor is a commonly used motor in electric vehicles. This paper focuses on the design and comparative analysis of integer and fractional order proportional integral controllers on Permanent Magnet Synchronous Motor (PMSM) used for electric vehicle application. Field oriented control (FOC) is used for control of PMSM in EV application. Dynamic equations in rotor reference frame are used to obtain the state space representation of the PMSM. Perturb and disturb method is used to convert this state space representation into transfer function. Frequency responsebased approach is used to design integer order PI (IOPI) and fractional order PI (FOPI) controllers for current as well as speed loops. Four different combinations of inner and outer loops are then considered for comparative analysis of time and frequency domain response. MATLAB software is used to validate the proposed PMSM drive system. It is observed that, the FOPI controller-based system is more effe”

Keywords: PMSM, field-oriented control, fractional order control, frequency response-based design.