Digital one-cycle control technique with grid voltage measurement applied to three-phase power factor corrected rectifiers and active power filters

Abstract

Considering the demand for improvements on domestic and industrial electrical loads to meet challenging goals of keeping up to an ever increasing demand of electri- cal energy and on the reduction of greenhouse gas emissions, the present work aims to apply the Digital One Cycle Control (DOCC) with grid voltage measurement to three-phase Power Corrected (PFC) Rectifier and Active Power Filter (APF). The use of grid voltage is explored in a generalized approach, by defining the influence of these measurements on harmonics, power factor and load limits. The compensation of inductive voltage drop and the use of Hybrid PWM are also applied to improve the power factor and the DC bus usage. Simulation and experimental results of the OCC digital technique applied to PFC and APF rectifiers are presented, analyzed and compared to simulation and experimental results of conventional technique for each system.Também disponível on-line.