Konstrukce třífázového usměrňovače s funkcí PFC

Abstract

The aim of the diploma thesis was to design a power rectifier with the function of suppression of higher harmonic components of currents, together with the dimensioning of individual subcomponents. To fulfill the task, it was necessary to investigate the issue of high-power AC-DC converters with a focus on unidirectional power transmission and then select the appropriate topology. The theoretical analysis itself is performed in the first chapter. The topologies of the currently implemented rectifiers are listed here. Furthermore, the chapter deals with a specific selected topology of the converter, the Vienna rectifier together with introduction of its characteristics and analysis. The following section describes the complete design procedure. The intention of the third chapter is to guide the reader through the final design. In the fourth chapter, the functionality of the partial analog components is verified, focusing on its main power and control part.