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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">pimi</journal-id><journal-title-group><journal-title xml:lang="ru">Приборы и методы измерений</journal-title><trans-title-group xml:lang="en"><trans-title>Devices and Methods of Measurements</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-9506</issn><issn pub-type="epub">2414-0473</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2220-9506-2020-11-1-33-41</article-id><article-id custom-type="elpub" pub-id-type="custom">pimi-637</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>Средства измерений</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Measuring instruments</subject></subj-group></article-categories><title-group><article-title>Измерительный преобразователь для ёмкостного сенсора воздушного зазора в гидрогенераторе</article-title><trans-title-group xml:lang="en"><trans-title>Measuring Transducer for Air Gap Capacitive Sensor in Hydrogenerator</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>Левицкий</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Levytskyi</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Победы, 56, г. Киев 03680</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зайцев</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zaitsev</surname><given-names>I. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки:  Е.А. Зайцев – Институт электродинамики НАН Украины, пр. Победы, 56, г. Киев 03680, Украина.    e-mail: zaitsev@i.ua</p></bio><bio xml:lang="en"><p>Address for correspondence: I.O. Zaitsev – The Institute of Electrodynamics of the NAS of Ukraine, Peremogy Ave., 56, Kyiv 03057, Ukraine.     e-mail: zaitsev@i.ua</p></bio><email xlink:type="simple">zaitsev@i.ua</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>Березниченко</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bereznychenko</surname><given-names>V. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Победы, 56, г. Киев 03680</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сухорукова</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Sukhorukova</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Победы, 56, г. Киев 03680</p></bio><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт электродинамики Национальной академии наук Украины</institution><country>Украина</country></aff><aff xml:lang="en"><institution>Institute of Electrodynamics of the National Academy of Science of Ukraine</institution><country>Ukraine</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>17</day><month>03</month><year>2020</year></pub-date><volume>11</volume><issue>1</issue><fpage>33</fpage><lpage>41</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Левицкий А.С., Зайцев Е.А., Березниченко В.А., Сухорукова А.Е., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Левицкий А.С., Зайцев Е.А., Березниченко В.А., Сухорукова А.Е.</copyright-holder><copyright-holder xml:lang="en">Levytskyi A.S., Zaitsev I.O., Bereznychenko V.O., Sukhorukova O.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://pimi.bntu.by/jour/article/view/637">https://pimi.bntu.by/jour/article/view/637</self-uri><abstract><p>Одним из важнейших параметров мощных гидрогенераторов является воздушный зазор между ротором и статором, и его отклонение от заданных норм является дефектом, который может привести к серьёзным авариям. Поэтому величину и форму зазора необходимо контролировать как во время осмотров, так и при эксплуатации машины. Целью данной работы являлась разработка вторичного измерительного преобразователя, обеспечивающего точность и разрешающую способность, для ёмкостного сенсора зазора, образованного компланарными параллельными электродами.</p><p>Рассматриваются особенности измерения воздушного зазора в мощных гидрогенераторах, а также существующие современные методы и средства измерений. Показано, что для измерения зазора в гидрогенераторах одним из наиболее подходящих средств является измеритель, в состав которого входит ёмкостный сенсор, устанавливаемый на расточке сердечника статора. Серийно выпускаемые измерители зазора с ёмкостными сенсорами по своим некоторым характеристикам не всегда подходят для использования в гидрогенераторах.</p><p>Предложен вторичный измерительный преобразователь с улучшенными характеристиками для ёмкостного сенсора зазора, образованного компланарными параллельными электродами.</p><p>Преобразователь разработан на основе уравновешенной компенсационно-мостовой измерительной цепи с формированием управляющего воздействия по фазе сигнала неравновесия. Приведена структурная схема преобразователя и описан алгоритм её работы. Рассмотрен процесс формирования в схеме измерительного выходного сигнала, пропорционального рабочей ёмкости сенсора.</p><p>Применение ёмкостного сенсора с компланарными параллельными электродами и предложенного вторичного измерительного преобразователя позволит обеспечить высокую точность и разрешающую способность при измерении воздушного зазора.</p></abstract><trans-abstract xml:lang="en"><p>One of the most important parameters of powerful hydro generators (HG) is the air gap between the rotor and the stator, and its deviation from the set norms is a defect that can lead to serious accidents. Therefore, the size and shape of the gap must be monitored both during inspections and during operation of the machine. The aim of this paper was to develop a secondary measuring transducer providing accuracy and resolution for a capacitive gap sensor formed by coplanar parallel electrodes.</p><p>It is shown that the reliability and safety of operation of powerful HG inextricably depend on the timely detection of their defects, especially during operation. One of the most important parameters of the HG is the air gap between the rotor and the stator, and its deviation from the set norms is a defect that can lead to serious accidents. Therefore, the size and shape of the gap must be monitored both: during inspections and during operation of the machine. The paper discusses the features of measuring the air gap in a powerful HG, as well as existing modern methods and means of measurement.</p><p>It is shown that for measuring the gap in capsule HG, one of the most suitable means is a meter, which includes a capacitive sensor mounted on a central bore of the stator core. Commercially available gap meters with capacitive sensors are not suitable for use on HGs. Commercially available meters with capacitive sensors, by their certain characteristics, are not always suitable for use on HGs.</p><p>A secondary measuring transducer with improved characteristics is proposed for a capacitive gap sensor formed by coplanar parallel electrodes.</p><p>The converter is developed on the basis of a balanced compensation bridge measuring circuit. The control action in the device is formed by the phase of the unbalancing signal.</p><p>The structural diagram of the converter is presented and the algorithm of its operation is described. The process of forming a measuring output signal proportional to the sensor working capacitance in the circuit is considered.</p><p>The use of a capacitive sensor with coplanar parallel electrodes and the proposed secondary measuring transducer will ensure high accuracy and resolution when measuring the air gap.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гидрогенератор</kwd><kwd>воздушный зазор</kwd><kwd>ёмкостный сенсор</kwd><kwd>измерительный преобразователь</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hydro generator</kwd><kwd>air gap</kwd><kwd>capacitive sensor</kwd><kwd>measuring transducer.</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Алексеев, Б.А. Определение состояния (диагностика) крупных гидрогенераторов. – 2-е изд., стер. / Б.А. 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