Mathematical Model of a Two-Phase-Three-Phase Voltage Modulator of an Asynchronized Generator's Contactless Valve Excitation System

The enhancement of existing and the development of new electric power generation systems represent a pressing scientific and practical challenge. A mathematical model of a voltage modulator – a component of a contactless thyristor-based excitation system for a constant-frequency generator – has been developed as a tool for computer-based analysis of the regularities of electromagnetic processes at the design stage of fundamentally new, more reliable, and efficient power generation systems, specifically in terms of ensuring voltage frequency stability under conditions of variable generator rotor speed. The mathematical model, developed in phase coordinates based on the theory of mathematical modeling of electromechanical-thyristor systems, takes into account the commutation processes of the thyristors and the mutual influence of structural elements, which constitutes the scientific novelty of the work. Its software implementation is of practical importance for the development of next-generation power generation systems, which is the future direction of this research. The paper presents the results of a computer-based analysis of the voltage modulator, examining the impact of its circuit configuration on the course of electromagnetic processes, with the aim of system optimization.