A New Numerical Approach for Simulation of Power Electronic Converters

Discrete simulation of Power Electronic Converters (PECs) can be important for several purposes such as condition and health monitoring, controller design, and analysis of these devices. In this study, an improved Trapezoidal Rule with Second Order Backward Differentiation Formula (TR-BDF2) and Predictor-Corrector (PC) approach is proposed for the simulation of PECs. The average of the function evaluation values is used along with the standard TR–BDF2 and PC method for the improvement and applied to a single-phase full-wave rectifier. The simulation results have shown that the tracking capability of the TR–BDF2 is improved and the numerical oscillations seen with the PC no longer appear in the proposed approach. Furthermore, the simulation results reveal that the improved approach provides promising results in terms of computational efficiency with respect to the fourth order Runge–Kutta (RK4) method, making it an alternative tool for simulating power electronic converters.