This study proposes a Maximum Torque per Ampere (MTPA) control strategy based on a current reference look-up table mapped as functions of torque and flux. The method reduces dependency on machine parameters, improves dynamic response, and enhances overall system reliability. To accurately generate the current reference table for various torque and flux commands for direct vector current control, an Interior Permanent Magnet Synchronous Motor (IPMSM) considering nonlinear magnetic characteristics was designed and analyzed using two- and three-dimensional finite element analysis (FEA) in Maxwell software. The designed IPMSM and its drive system were rated at 150 kW and capable of operating up to 12,000 rpm. Performance characteristics were evaluated across the entire speed range, and experimental results validated the effectiveness of the proposed approach, demonstrating compliance with the specified performance criteria for electric vehicle traction applications.