Modified multifrequency resonant current controller

Abstract

Summary In this paper, a modified multifrequency resonant current controller is proposed for application in three‐phase power converters. The modifications include a novel controller structure combined with a corresponding parameter tuning procedure. We outlined the novel tuning procedure together with an original anti‐windup algorithm, which we used in proportional‐resonant (PR) controllers based on second order generalized integrator (SOGI) and reduced order generalized integrator (ROGI) methods. We tested and verified the control structure through a set of simulations and experimental tests. When compared to a reference solution, the novel controller enables simpler parameter tuning, faster settling times, and operation with a smaller margin between the controller cutoff frequency and maximum multifrequency controller harmonic frequency.