Desenvolvimento de um retificador 20 pulsos isolado, não-controlado e com alto fator de potência

Abstract

This work suggests an uncontrolled three-phase rectification topology with high power factor, using three-to-five phases transformers, with connection based on the zig-zag transformer. The topology has two bridge rectifiers in series, each with ten diodes for the twenty pulses rectification. The work presents general concepts about the rectification process, regulatory restrictions on the harmonic currents, such as the development of the transformers, the power required for the proposed topology and its mathematical analysis. The specification of the circuit components and the simulation of the rectifier are presented in computational tools for the result validation. Experimentally, a prototype is developed to verify the theoretical analysis. The development of the prototype is described in this work.