Passivity-Based Techniques for Controlling BLDC Motor-Driven EVs

Brushless DC (BLDC) motors have great efficiency, dependability, and accurate speed control, it is essential to manage them well in a variety of Electric Vehicle (EV) sectors and renewable energy applications. Nevertheless, problems like torque ripples and harmonic distortions frequently impair the efficiency and performance of BLDC motors. With an emphasis on harmonic detection and reduction, this work seeks to solve these issues by developing and implementing a passivity-based Proportional-Integral (PI) controller for BLDC motors of electric vehicles. This system employs a boost converter to increase the DC output once it has been rectified. The SEPIC converter is operated by a passivity-based PI controller, which boosts voltage steadily and efficiently. The amplified output is then sent into a three-phase voltage source inverter (VSI). The VSI's output is carefully controlled by another passivity-based PI controller (PBC) to prevent harmonic distortions and manage the BLDC motor's speed. This controller's main goals are to decrease torque ripples and lower certain harmonics that affect how the motor operates. The main objective of this system is to minimise harmonic distortions and optimise the BLDC motor system's performance and efficiency, which will raise the system's overall efficacy and dependability. By applying passivity-based control strategies throughout the power conversion process, this research aims to increase the effectiveness, reliability, and performance of BLDC motor systems in EV. Through simulation, the value of the suggested approach for BLDC motor control in EV is demonstrated, helping to advance the field of sustainable transportation and electric propulsion technology. 93% efficiency and 1:8V voltage gain, respectively, are the SEPIC converter's specifications.