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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">pribor</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Instrument Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3454</issn><issn pub-type="epub">2500-0381</issn><publisher><publisher-name>Национальный исследовательский университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/0021-3454-2026-69-9-832-845</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-606</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕТОДЫ И ПРИБОРЫ ДЛЯ АНАЛИЗА И КОНТРОЛЯ МАТЕРИАЛОВ, ИЗДЕЛИЙ, ВЕЩЕСТВ И ПРИРОДНОЙ СРЕДЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHODS AND DEVICES FOR MONITORING AND DIAGNOSTICS OF MATERIALS, PRODUCTS, SUBSTANCES AND THE NATURAL ENVIRONMENT</subject></subj-group></article-categories><title-group><article-title>Модель системы беспроводного заряда при функционировании в морской воде в условиях качки. Ч. 2</article-title><trans-title-group xml:lang="en"><trans-title>Model of a wireless charging system operating in seawater under rough sea conditions. P. 2</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семыкина</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Semykina</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Юрьевна Семыкина — д-р техн. наук, доцент; лаборатория гидрофизических и биоэлектронных измерительных систем и технологий, гл. научный сотрудник</p><p>Севастополь</p></bio><bio xml:lang="en"><p>Irina Yu. Semykina — Dr. Sci., Associate Professor; Laboratoryof Hydrophysical and Bioelectronic Measuring Systems and Technologies; Chief Researcher</p><p>Sevastopol</p></bio><email xlink:type="simple">arinasemykina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смокталь</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Smoktal</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Николаевич Смокталь — лаборатория гидрофизических и биоэлектронных измерительных систем и технологий; инженер</p><p>Севастополь</p></bio><bio xml:lang="en"><p>Nikolay N. Smoktal — Laboratory of Hydrophysical and Bioelectronic Measuring Systems and Technologies; Engineer</p><p>Sevastopol</p></bio><email xlink:type="simple">niccos.sm@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Велиляев</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Velilyaev</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Амет-хан Станиславович Велиляев — лаборатория гидрофизических и биоэлектронных измерительных систем и технологий; инженер</p><p>Севастополь</p></bio><bio xml:lang="en"><p>Amet-Khan S. Velilyaev — Laboratory of Hydrophysical andBioelectronic Measuring Systems and Technologies; Engineer</p><p>Sevastopol</p></bio><email xlink:type="simple">velilyaev1999@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Завьялов</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavyalov</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий Михайлович Завьялов — д-р техн. наук, доцент; кафедра электроэнергетики; профессор</p><p>Севастополь</p></bio><bio xml:lang="en"><p>Valery M. Zavyalov — Dr. Sci., Associate Professor, Department of Electric Power Engineering; Professor</p><p>Sevastopol</p></bio><email xlink:type="simple">vmzavyalov@sevsu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт природно-технических систем</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Natural and Technical Systems</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Севастопольский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sevastopol State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>16</day><month>10</month><year>2026</year></pub-date><volume>69</volume><issue>9</issue><fpage>832</fpage><lpage>845</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Национальный исследовательский университет ИТМО</copyright-holder><copyright-holder xml:lang="en">Национальный исследовательский университет ИТМО</copyright-holder><license xlink:href="https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://pribor.ifmo.ru/jour/article/view/606">https://pribor.ifmo.ru/jour/article/view/606</self-uri><abstract><p>Исследование посвящено разработке комплексной математической и компьютерной модели системы беспроводного заряда аккумуляторов автономных плавучих аппаратов, функционирующей в морской воде в условиях качки. Актуальность обусловлена отсутствием моделей, учитывающих совместное влияние переменного взаимного положения катушек и специфики высокопроводящей среды. Представлены результаты экспериментов, проводимых для системы беспроводного заряда мощностью 150 Вт с последовательной LC-топологией, предназначенной для работы в морской среде. Цель экспериментов — верификация комплексной математической и компьютерной модели, основанная на математическом описании, приведенном в первой части статьи, и оценка влияния проводящей среды (пресной и морской воды) на энергетические характеристики системы. Представлены экспериментальная установка с многослойными катушками и методика проведения измерений. Проведен сравнительный анализ амплитудно-частотных характеристик системы в воздухе, пресной и морской воде и результатов моделирования. Методом последовательного приближения идентифицированы параметры эквивалентной схемы замещения, учитывающие потери на вихревые токи. Показано, что модель М2, учитывающая эти потери через эквивалентные активные сопротивления, демонстрирует высокую сходимость с экспериментом (СКО не более 5 %), тогда как влияние паразитных емкостей в рабочем диапазоне частот 90–130 кГц пренебрежимо мало. Подтверждена необходимость учета нелинейности полупроводниковых элементов для корректного описания процессов в частотной области. Полученные результаты подтверждают корректность разработанной модели и ее пригодность для прогнозирования характеристик системы в реальных условиях эксплуатации.</p></abstract><trans-abstract xml:lang="en"><p>This study focuses on the development of a comprehensive mathematical and computational model for a wireless battery charging system designed for autonomous underwater vehicles operating in seawater under rolling conditions. The research is motivated by the lack of existing models that account for the combined effects of varying coil alignment and the characteristics of a highly conductive medium. Experimental results are presented for a 150 W wireless charging system featuring a series LC topology intended for marine environments. The experiments aimed to validate the comprehensive mathematical and computational model—based on the mathematical description provided in the first part of the paper—and to assess the impact of the conductive medium (freshwater and seawater) on the system's energy characteristics. The experimental setup, utilizing multi-layer coils, and the measurement methodology are described. A comparative analysis was conducted between the system's amplitude-frequency characteristics in air, freshwater, and seawater and the corresponding simulation results. Parameters for the equivalent circuit, accounting for eddy current losses, are identified using a successive approximation method. It is demonstrated that model M2—which accounts for these losses via equivalent resistances—shows strong agreement with experimental data (with a root-mean-square error of no more than 5%), whereas the influence of parasitic capacitances within the 90–130 kHz operating frequency range is negligible. The study confirms the necessity of accounting for the nonlinearity of semiconductor components to accurately describe frequency-domain processes. The results validate the developed model and demonstrate its suitability for predicting system performance under actual operating conditions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>система беспроводного заряда</kwd><kwd>взаимная индуктивность</kwd><kwd>аккумуляторы</kwd><kwd>морская вода</kwd><kwd>качка</kwd><kwd>эквивалентная схема замещения</kwd><kwd>вихревые токи</kwd><kwd>паразитная емкость</kwd><kwd>полупроводниковые коммутационные элементы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>wireless power transfer</kwd><kwd>mutual inductance</kwd><kwd>batteries</kwd><kwd>sea water</kwd><kwd>pitching</kwd><kwd>equivalent circuit</kwd><kwd>eddy currents</kwd><kwd>parasitic capacitance</kwd><kwd>power electronics</kwd><kwd>model verification</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">исследование выполнено при поддержке Российского научного фонда, грант № 25-29-00182  (https://rscf.ru/project/25-29-00182/).</funding-statement><funding-statement xml:lang="en">the research was supported by the Russian Science Foundation, grant No. 25-29-00182  (https://rscf.ru/project/25-29-00182/)</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Семыкина И. 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