An Optimized 2DOF-FOPID Control Scheme Using Fractional Filter for Indirect Matrix Converters in Abnormal Grid Voltage Situations

Abstract

In order to maintain balanced output voltages and operate at optimal efficiency in the event of an unbalanced grid voltage, the Indirect Matrix Converter (IMC) control is crucial. This work proposes a Two Degree of Freedom Fractional Order Proportional Integral Derivative Control (2DOF-FOPID) system to operate the IMC in the case of an unbalanced voltage condition. To achieve sinusoidal load currents and regulate the input power factor, utilize the IMC. The suggested 2DOF-FOPID-FF control and Enhanced Squirrel Search (ESS) algorithm is used to operate this converter. Then, using the ESS technique, the 2DOF-FOPID-FF control's ideal parameter gains are discovered. Comparing the suggested control technique to the existing algorithms, the findings demonstrate superior transient response with shorter rise time (0.038 sec), settling time (0.207 sec), and no overshoot. The algorithm also converges quickly.