Analysis of Deadbeat Grid-Connected Algorithm Based on Newton and Taylor Interpolation Prediction

Aiming at the deadbeat grid-connected algorithm of inverters, the advanced beat control algorithm based on Newton and Taylor interpolation prediction is studied respectively. Two prediction algorithms are compared on their computation load and prediction error with theory analysis and MATLAB simulation. Finally, the comparison results are verified by a 3kW photovoltaic inverter. It is shown that compared with the conventional deadbeat grid-connected algorithm, the advanced one based on Newton and Taylor interpolation prediction makes less current harmonic. Among them, the deadbeat algorithm based on Taylor prediction has the advantages in accumulated error and current harmonic, but its computation load is larger.