Analysis of processes in the converter with twelve-zone voltage regulation and electromechanical load

Abstract

The article focuses on electromagnetic processes in the electric circuits with semiconductor switches. The mathematical model of the converter with twelve-zone regulation of output voltage has been developed to analyse electromagnetic processes in semiconductor converters with pulse-width regulation. The graphs representing electromagnetic processes in electric circuits are given. The mathematical model of the semiconductor converter is also used to research transients in semiconductor converters with active inductive load. The method of multiparameter functions, which are the parts of algorithmic equations of the analysis of steady-state and transient processes in branchy electric circuits with semiconductor switches and reactive elements, has been developed in terms of considering the features of using phase and linear voltages of the power supply network. The authors have created a new mathematical model of steadystate and transient processes in electric circuits of modulating semiconductor converters with multichannel zonal usage of phase voltages in three-phase power supply without taking into account electric power losses in switches to evaluate rapidly the influence of load parameters on the characteristics of regulated sinusoidal and DC voltages. The results of this work can be used to improve the method of multiparameter modulating functions to simplify the analysis of transient processes in electric circuits without taking into account the losses in key elements. Ref. 4, pic. 3

Keywords

• semiconductor converter
• zonal voltage regulation
• electromagnetic processes.