Modified V-Shaped Interior Permanent Magnet Synchronous Motor Drive for Electric Vehicle

Abstract

Electric Vehicles are one of the promising engineering areas. Among different types of permanent magnet traction motors, the Interior Permanent Magnet Synchronous Motor is the most efficient for electric vehicle applications. According to the rotor structure, the Interior Permanent Magnet Synchronous Motor is classified as an interior permanent magnet, U-shaped, V-shaped, and modified V-shaped Interior Permanent Magnet Synchronous Motor. The Modified V-shaped Interior Permanent Magnet Synchronous Motor has high efficiency, fewer core losses, fewer cogging torque, and less weight. Therefore, it is the most suitable Interior Permanent Magnet Synchronous Motor for electric vehicle applications. Among different motor controllers, the Field Oriented Control is the most suitable control technique due to less torque ripples and improved dynamics responses. In Modified V-shaped Interior Permanent Magnet Synchronous Motor, the reluctance torque is higher compared to other types of Interior Permanent Magnet Synchronous Motor. In conventional Field Oriented Control with the Constant Torque Angle method reluctance torque produced in a motor is not considered. Hence Modified V-shaped Interior Permanent Magnet Synchronous Motor with Constant Torque Angle based Field Oriented Control faces some drawbacks like poor steady-state and transient characteristics. These drawbacks are overcome with Maximum Torque Per Ampere based Field Oriented Control since it considers the reluctance torque and it has smooth steady-state characteristics. The performance comparison of Constant Torque Angle based Field Oriented Control and Maximum Torque Per Ampere based Field Oriented Control for Modified V-shaped Interior Permanent Magnet Synchronous Motor drive is presented in this paper. The entire system is validated with vehicle dynamics of E-rickshaw with a standard drive cycle. From this, it is proven that the Maximum Torque Per Ampere based Field Oriented Control is suitable for complete and efficient traction of Modified V-shaped Interior Permanent Magnet Synchronous Motor in the E-rickshaw application.