ntvНаучно-технический вестник информационных технологий, механики и оптикиScientific and Technical Journal of Information Technologies, Mechanics and Optics2226-14942500-0373Университет ИТМО10.17586/2226-1494-2023-23-1-192-201ntv-349Research ArticleМАТЕМАТИЧЕСКОЕ И КОМПЬЮТЕРНОЕ МОДЕЛИРОВАНИЕMODELING AND SIMULATIONПрименение обратной связи переменной точности для повышения быстродействия контура тока в инверторах на базе GaN-транзисторовUsing variable-precision feedback to improve operational speed of the current loop in GaN-invertershttps://orcid.org/0000-0002-1019-756XАнучинА. С.AnuchinA. S.

Анучин Алексей Сергеевич - доктор технических наук, профессор, заведующий кафедрой

Москва, 111250

Alecksey S. Anuchin - D.Sc., Professor, Head of Department

Moscow, 111250

Anuchin.alecksey@gmail.comhttps://orcid.org/0000-0002-2326-1153ГуляеваМ. А.GulyaevaM. A.

Гуляева Мария Андреевна - ассистент

Москва, 111250

Maria A. Gulyaeva - Assistant

Moscow, 111250

tilgivelse@yandex.ruhttps://orcid.org/0000-0002-9699-7145ЛашкевичМ. М.LashkevichM. M.

Лашкевич Максим Михайлович - кандидат технических наук, ведущий инженер-программист

Москва, 111396

Maxim M. Lashkevich - PhD, Leading Software Engineer

LLC, Moscow, 111396

maxsoftpage@yandex.ruhttps://orcid.org/0000-0001-5628-8101ЖарковА. А.ZharkovA. A.

Жарков Александр Александрович - кандидат технических наук, доцент; главныйконструктор

Москва, 111250

Москва, 111396

Alexandr A. Zharkov - PhD, Associate Professor, Associate Professor; Chief Designer

Moscow, 111250

Moscow, 111396

zarckov@mail.ruhttps://orcid.org/0000-0001-9056-3760ХаоЧенHaoChen

Чен Хао - кандидат технических наук, старший инженер-исследователь

Сюйчжоу, 100083

Hao Chen - PhD, Senior Research Engineer

Xuzhou, 100083

hchen@cumt.edu.cnhttps://orcid.org/0000-0002-9778-6817ДиановА. Н.DianovA. N.

Дианов Антон Николаевич - кандидат технических наук, старшийинженер-исследователь

Сеул, 03140

Anton N. Dianov - PhD, Senior Research Engineer

Seoul, 03140

anton.dianov@ieee.orgНациональный исследовательский университет «МЭИ»РоссияNational Research University “Moscow Power Engineering Institute” (MPEI)Russian FederationООО «НПФ ВЕКТОР»РоссияR&D Company “Vector”Russian FederationНациональный исследовательский университет «МЭИ»; ООО «НПФ ВЕКТОР»РоссияNational Research University “Moscow Power Engineering Institute” (MPEI); R&D Company “Vector”Russian FederationChina University of Mining & TechnologyКитайChina University of Mining & TechnologyChinaDaeyoung R&D CenterЮжная КореяDaeyoung R&D CenterKorea, Republic of202319122024231192201Copyright © Анучин А.С., Гуляева М.А., Лашкевич М.М., Жарков А.А., Хао Ч., Дианов А.Н., 20242024Анучин А.С., Гуляева М.А., Лашкевич М.М., Жарков А.А., Хао Ч., Дианов А.Н.Anuchin A.S., Gulyaeva M.A., Lashkevich M.M., Zharkov A.A., Hao C., Dianov A.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ntv.elpub.ru/jour/article/view/349

Предмет исследования. С появлением силовых электронных устройств на полупроводниках с широкой запрещенной зоной, таких как SiC (карбид кремния) и GaN (нитрид галлия), частота широтно-импульсной модуляции увеличилась. В современных сервоприводах, использующих транзисторы на базе GaN, частота коммутации может достигать 100 кГц и более. В этом случае быстродействие электропривода ограничивается не частотой широтно-импульсной модуляции, а задержкой в измерении обратной связи по току. Однако при использовании в электроприводе датчиков тока с дельта-сигма модуляцией, задержку в обратной связи можно регулировать соответствующим изменением точности измерения.Метод. Рассмотрено применение менее точной, но более быстрой обратной связи в случае, когда ошибка между заданным и реальным значениями тока двигателя велика. В случае небольшой ошибки значения тока предложено использование более медленной, но точной обратной связи. Изменение скорости отработки задания требует одновременного изменения параметров регулятора тока.Основные результаты. Выполнено исследование представленного алгоритма на виртуальной модели сервопривода. Проведено сравнение адаптивного регулятора тока со стандартным регулятором при разных настройках. Показано, что за счет применения предложенного алгоритма быстродействие контура тока увеличивается вдвое без потери точности поддержания сигнала по сравнению со стандартным вариантом. Применение алгоритма позволило вдвое повысить частоту среза контура тока. Результаты получены для сигнала с линейной частотной модуляцией в качестве регулируемой величины.Практическая значимость. Предложенный способ измерения обратной связи в контуре тока позволяет увеличить быстродействие сервопривода в целом за счет увеличения быстродействия его внутреннего контура без потери точности регулирования.

With the advent of wide band-gap semiconductors like SiC and GaN, the frequency of pulse-width modulation has increased. In modern electric drives, the switching frequency can reach 100 kHz or more. In this case the performance of the drive is limited by the delay in the current feedback measurement. This delay can be changed by using deltasigma modulators. This type of current sensors allows setting the measurement time. However, as the measurement time decreases, the accuracy of the feedback reduces. This paper proposes the algorithm in which the current controller uses variable-precision feedback. When the error between the reference and feedback is large, it uses faster but less accurate current feedback. When the error is small, it uses slower but accurate feedback. Changing the feedback measurement time requires changing the current controller gains. The algorithm was investigated on a virtual servo drive model. To evaluate the performance of the proposed regulator, the results were compared with standard regulators with different settings. It was proved that this approach allows increasing the speed of the current loop without loss in the transient performance. Besides, the algorithm increases the cut-off frequency in comparison with the standard slow and accurate controller.

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