ВИЗНАЧЕННЯ ПАРАМЕТРІВ ДИНАМІЧНОЇ МОДЕЛІ РЕЗОНАНСНОГО ПЕРЕТВОРЮВАЧА СУДНОВОЇ СИСТЕМИ РОЗМАГНІЧУВАННЯ

• Дата: 2026
• Автори: Павлов, Г.В., Обрубов, А.В., Вінниченко, І.Л., Фоменко, А.М.
• Формат: Стаття
• Опубліковано: Інститут електродинаміки НАН України, Київ 2026
• Теми: динамічна модель; експериментально-аналітичний метод; імітаційна модель; передавальна функція; резонансний перетворювач; суднова система розмагнічування; циклоконвертор
• Онлайн доступ: https://techned.org.ua/index.php/techned/article/view/1828
• Назва журналу: Technical Electrodynamics

The aim of the work is to determine the structure and parameters of a continuous linear dynamic model of a push-pull resonant converter with variable polarity of output values, intended for powering the ship's demagnetization contours. The task of the work is to process the experimental data of the transient characteristics of the experimental converter. The converter consists of a bridge inverter, a series resonant branch with a voltage transformer and a cycloconverter loaded on the demagnetization circuit, which is represented by a series RL branch without a filtering capacitance or an RLC circuit with a filtering capacitance. The output values are adjusted alternately by frequency and pulse-width modulation methods. The regulated converter is considered as a dynamic controlled system with inputs from the power supply side (disturbance effect) and from the control side (input effect). When switching from latitudinal to frequency regulation, the nature of electromagnetic processes changes qualitatively and it is difficult to describe them with a single theoretical mathematical model. The research methods used in the work are the operator method for describing the mathematical model of the power circuit and the experimental-analytical method for determining the parameters of the approximate dynamic model of the converter. During the experiments, the parameters of the approximate dynamic model were selected by the gradient descent method to minimize the quadratic deviations between the transition curves obtained from the simulation models and the transition curves obtained from the approximate dynamic model. As a result, arrays of values of parameters of the approximate dynamic model (transmission coefficient, two coupling frequencies and second-order pole quality factor) were obtained, which allowed to establish regularities between the regulating quantities and parameters of the dynamic model of the resonant converter. This approach also allowed to confirm the hypothesis about the correspondence of the structure of the approximate dynamic model to the transfer function of the passive part of the power circuit of the converter in the interval of continuous connection between the input and output. The proposed approximate dynamic model of the resonant converter allows to synthesize automatic regulators of output quantities and to analyse the influence of instability and low-frequency fluctuations of the supply voltage on the output quantities. The presented results can be used in the study of single- or multi-circuit bridge high-frequency resonant converters used in ship demagnetization systems. References 24, figures 5.