Design and Performance of a Phase Angle Control Method Based on Digital Phase-locked Loop

Abstract

Controlling of the phase angle of the output current or voltage of the resonant inverter is crucial for the proper operation of the power converters in the application of energy engineering. This paper proposed a novel phase angle control method based on digital phase-locked loop (DPLL). The new method features accurate phase control and flexible phase adjustment. Also we established a mathematical model of the DPLL based on the analysis of the operating characteristic of each module. Several experiments were also implemented to verify the effectiveness of the proposed phase angle control method in the end.