Optimizing Interior PMSMs for Energy Efficiency: Simple Dynamic Direct Voltage Control for Electric Vehicle during Standard Driving Cycles

This manuscript details a strategy focused on evaluating the energy efficiency of various electric vehicle driving cycles, utilizing a simple dynamic direct voltage MTPA speed control (S-DDVC) technique for IPMSMs. By identifying a unique motor voltage angle and magnitude combination, the MTPA trajectory can be tracked for each reference speed or torque condition, ensuring minimal current and power consumption while enhancing energy efficiency. This approach improves precision under various driving conditions by considering the motor’s dynamic model. The paper also includes a comparative study between the S-DDVC methodology and the traditional FOC strategy within the context of electric vehicle standard driving cycles. Experimental results and quantitative evaluations demonstrate that the S-DDVC strategy is effective and offers higher efficiency for IPMSM drives, making it a viable alternative to current MTPA methods for modern electric vehicle applications.