Modelling of SVPWM and PWM Control Methods for BLDC Motor and Hardware Implementation of PWM Control using F28069M LaunchPad

The paper introduces a simulation model for controlling the speed of a Brushless DC (BLDC) motor using MATLAB-SIMULINK. The model incorporates the mathematically modeled current and voltage control loops, namely Space Vector Pulse Width Modulation (SVPWM) and Trapezoidal Pulse Width Modulation, respectively. These control loops ensure effective motor control by regulating the motor’s voltage and current. The simulation model specifically focuses on the PWM control approach and examines the effects of different duty ratios and torque inputs on the motor’s performance. Through the simulation, the corresponding outputs in terms of speed and torque are analyzed, providing a comprehensive understanding of how BLDC motors operate and how PWM control enables precise voltage regulation to achieve desired speed and torque outputs. Additionally, the paper presents a modeled approach for SVPWM control and observes a reduction in current and torque ripple. The proposed PWM model is then implemented in hardware using a Piccolo F28069M LaunchPad (DSP TMS320F28069M). The adoption of Model-Based Design (MBD) facilitates efficient programming of the DSP, resulting in improved motor control. Overall, the paper contributes to the field by offering a simulation model that demonstrates the effectiveness of PWM control in regulating BLDC motor speed and torque. The inclusion of SVPWM control analysis and hardware implementation adds further insights and practicality to the study, showcasing the potential for efficient motor control in real-world applications.