Design of voltage loop for three-phase PWM rectifier based on single neuron adaptive PID control

During the control process of the three-phase PWM rectifier, the parameters of the conventional PID controller are kept constant. It's unable to make appropriate changes according to the actual working condition of the rectifier and the change of working environment, which limits the adaptability of the rectifier to environment and working conditions. Against this point, the single neuron adaptive PID is used as the voltage outer loop controller of the three-phase PWM rectifier instead of the conventional PID. The single neuron could make online adjustment of PID parameters according to the working state of the three-phase PWM rectifier. As a result, it solves the phenomenon that the control performance of the conventional PID controller varies with different working conditions. Through theoretical analysis and simulation verification, the three-phase PWM rectifier controlled by single neuron adaptive PID controller not only own the simple parameter setting process, but strong adaptability, better dynamic and static performance.