Design and Implementation of a Modified Harmonic Controller for a High Performance Control of Three Phase PWM Rectifiers

Active AC-DC rectifiers are widely used, however their presence lowers the quality of the grid current, leading to an increase in non-linearities in electronic equipment. As a result, a three-phase boost power factor correction (PFC) rectifier has gained popularity as a viable solution for properly addressing this issue. In this paper a unique objective function is used in conjunction with proportional-integral (PI) and repetitive (RC) controllers to optimise the controller parameters of a three-phase boost power factor correction (PFC) rectifier. The key goals of this study are to optimise the settings of the various control loops in order to reduce total harmonics distortion (THD) and improve dynamic performance indices such as overshoot, rising time, and zero steady-state error. The control parameters of the three-phase boost PFC rectifier are optimised with the help of a commonly utilised evolutionary approach. MATLAB was used to do a speedy Fourier transform and dynamic response analysis once the optimal values for the PI and RC parameters were determined.Furthermore, the optimum results are confirmed using separate evaluation functions, both in terms of THD reduction and the enhancement of dynamic performance indices.