FLUX-BASED ACTIVE-FILTER CONTROLLER

This paper presents a synchronous frame flux-based control method for a parallel active filter application, The flux-based controller direct ly implements the inverter switchings in the synchronous reference fra me by a hysteresis rule-based carrier-less pulse-width modulation (PWM ) strategy to achieve high current bandwidth. This paper addresses the issues and impact on parallel active filtering requirements for utili ty interface of commonly used harmonic front-ends, The synchronous fra me flux-based controller provides additional insights for harmonic cur rent compensation requirements. Simulation results provide the validat ion of the flux-based active filter controller to meet IEEE Standard 5 19 recommended harmonic standards for large rated nonlinear loads unde r balanced and unbalanced supply conditions.