Direct power control PWM rectifier using switching table for series resonant converter capacitor charging pulsed power supply

Abstract

This paper presents the analysis of a direct power control (DPC) technique and model using switching table for Pulsed power system used in linear electron accelerator. High voltage pulse are required in such accelerator are generated using smart modulator based on capacitor charging power supply (CCPS). The CCPS used has a series-resonant topology, which acts as a nonlinear and discontinuous load. Hence power factor is poor in 3-phase mains supply. Active rectifiers are good choice for power factor correction in non-linear loads. The simplest form of active rectification is based on direct power control (DPC) using switching table where. The Control algorithm stored in switching table in DPC provides smooth regulation of instantaneous active and reactive powers. The unity power factor (UPF) operation maintains the reactive power zero in all sectors. Simulation verifies the harmonic distortion content are maintained within standard limits.