alternativeАльтернативная энергетика и экология (ISJAEE)Alternative Energy and Ecology (ISJAEE)1608-8298Международный издательский дом научной периодики "Спейс10.15518/isjaee.2017.10-12.014-023alternative-1017Research ArticleВОЗОБНОВЛЯЕМАЯ ЭНЕРГЕТИКА, СОЛНЕЧНАЯ ЭНЕРГЕТИКАRENEWABLE ENERGY, SOLAR ENERGYАЛГОРИТМ НЕСИММЕТРИЧНОГО УПРАВЛЕНИЯ СИЛОВЫМИ ТРАНЗИСТОРАМИ В ПРЕОБРАЗОВАТЕЛЕ ПОСТОЯННОГО НАПРЯЖЕНИЯ С ПОСЛЕДОВАТЕЛЬНЫМ РЕЗОНАНСНЫМ ИНВЕРТОРОМ ДЛЯ СОЛНЕЧНЫХ ЭЛЕКТРОСТАНЦИЙTHE ALGORITHM FOR ASYMMETRIC CONTROL OF THE POWER TRANSISTORS IN THE DC-DC CONVERTER WITH SERIES-RESONANT INVERTER FOR SOLAR POWER PLANTSСеребрянниковА. В.SerebryannikovA. V.

канд. техн. наук, доцент, кафедры промышленной электроники 

alex-silver@mail.ruМалининГ. В.MalininG. V.

канд. техн. наук, доцент, кафедры промышленной электроники

malgrig6@mail.ruЧувашский государственный университет им. И.Н. УльяноваРоссияChuvash State University named after I.N. UlyanovRussian Federation201717052017010-121423Copyright © Международный издательский дом научной периодики "Спейс, 20172017Международный издательский дом научной периодики "СпейсМеждународный издательский дом научной периодики "Спейсhttps://www.isjaee.com/jour/about/submissions#copyrightNoticehttps://www.isjaee.com/jour/article/view/1017

Проектирование преобразователей постоянного напряжения (ППН) с оптимальными параметрами является сложной задачей.  В теоретической части статьи приведена принципиальная схема силовой части рассматриваемого мостового ППН, а также описан принцип работы этой части ППН с последовательным резонансным инвертором для солнечных электростанций. С помощью временных диаграмм объяснены особенности симметричного и несимметричного управления силовыми транзисторами преобразователя, а также приведены характеристики, позволяющие сравнить два способа управления.  Для управления резонансными ППН существует большое количество аналоговых контроллеров на серийных микросхемах, но они предназначены только для реализации симметричного управления. В работе предложена схема реализации на дискретных компонентах алгоритма несимметричного управления транзисторами последовательного резонансного инвертора в виде виртуальной модели в среде Matlab-Simulink. На данный момент несимметричный способ управления описан только в одной иностранной работе, в которой приведены осциллограммы тока резонансного контура и управляющих напряжений на затворах MOSFET-транзисторов преобразователя, а также блок-схема системы управления. Таким образом, описанный в данной статье алгоритм несимметричного управления является оригинальным, а результаты исследования – новыми по сравнению с существующими мировыми практиками. В экспериментальной части статьи приведены результаты моделирования (переходный процесс, установившийся режим, внешние характеристики, зависимости для КПД преобразователя). Полученные характеристики согласуются с результатами теоретических расчётов, представленных в предыдущих работах авторов.

 

 

 

 

Designing of DC-DC converters with optimal parameters is a challenging task.

The theoretical part of the paper shows a schematic circuit of the power part of the bridge DC-DC converters under consideration, and describes the operating principle of the power part of the DC-DC converter with a series resonant inverter for solar power plants. With the help of timing diagrams, the features of the symmetrical and asymmetrical control of the power transistors of the converter are explained, and the characteristics that allow comparing the two control methods are explained.

To DC-DC converter control, there are many analogue controllers on serial chips, but they are intended only for implementing symmetrical control. Thus the paper proposes the scheme of algorithm of the asymmetrical transistors control in a series resonant inverter in the form of a virtual model in Matlab-Simulink environment. A few foreign studies currently describe an asymmetrical control method, with only current waveforms of the resonant circuit and control voltages on the gates of the converter’s MOSFET transistors, as well as a block diagram of the control system. Therefore, the algorithm of asymmetrical control described in this paper is original, and the results of the research are new in comparison with existing world practices.

The experimental part of the paper presents the simulation results (transient, steady-state, external characteristics, dependencies for converter’s efficiency). The obtained characteristics agree with the results of theoretical calculations shown in previous papers of the authors. 

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The authors declare that there are no conflicts of interest present.