Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms
When designing an automated electric drive, it is required to provide the necessary quality indicators of speed control as much as possible with the lowest energy losses in it. Assessment of dynamic losses in power semiconductor switches of autonomous voltage inverters (AVI) is due to the need to select optimal control algorithms for them in order to increase energy efficiency in frequency-controlled asynchronous electric drive systems. To solve the set tasks, the method of mathematical modeling has been used. With the help of the developed program, an assessment of the dynamic losses in a high-speed electric drive during its operation in a steady state has been made. At a typical modulation frequency fм = 6,000 Hz, which with scalar control algorithms provides a sufficient degree of approximation of the generated phase voltage envelopes to a sinusoidal form, and the use of pulse-width control (WIR) algorithms, significant dynamic losses are observed in the switches of an autonomous voltage inverter. In the course of using the WID algorithms, an accurate approximation of the sinusoidal shape is not required, which makes it possible to reduce the modulation frequency and, as a consequence, reduce the amount of dynamic losses in the AVI keys. Therefore, a comparative assessment of dynamic losses has been carried out for the scheme of a classic three-phased AVI using the algorithms of unipolar and bipolar pulse-width control. The obtained simulation results have shown that the unipolar WID algorithm is more energy-saving compared to the bipolar WID algorithm when used in high-speed electric drives.
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Format: | Journal Contribution biblioteca |
Language: | Russian |
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2020
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Subjects: | Autonomous inverter, Dynamic losses, Asynchronous motor, High speed electric drive, Energy saving, Автономный инвертор, Динамические потери, Асинхронный двигатель, Высокоскоростной электропривод, Энергосбережение, ASFA_2015::E::Electrical engineering, ASFA_2015::E::Energy, ASFA_2015::M::Mathematical models, |
Online Access: | http://hdl.handle.net/1834/41643 |
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Autonomous inverter Dynamic losses Asynchronous motor High speed electric drive Energy saving Автономный инвертор Динамические потери Асинхронный двигатель Высокоскоростной электропривод Энергосбережение ASFA_2015::E::Electrical engineering ASFA_2015::E::Energy ASFA_2015::M::Mathematical models Autonomous inverter Dynamic losses Asynchronous motor High speed electric drive Energy saving Автономный инвертор Динамические потери Асинхронный двигатель Высокоскоростной электропривод Энергосбережение ASFA_2015::E::Electrical engineering ASFA_2015::E::Energy ASFA_2015::M::Mathematical models |
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Autonomous inverter Dynamic losses Asynchronous motor High speed electric drive Energy saving Автономный инвертор Динамические потери Асинхронный двигатель Высокоскоростной электропривод Энергосбережение ASFA_2015::E::Electrical engineering ASFA_2015::E::Energy ASFA_2015::M::Mathematical models Autonomous inverter Dynamic losses Asynchronous motor High speed electric drive Energy saving Автономный инвертор Динамические потери Асинхронный двигатель Высокоскоростной электропривод Энергосбережение ASFA_2015::E::Electrical engineering ASFA_2015::E::Energy ASFA_2015::M::Mathematical models Mashkin, A. V. Fedotovsky, S. B. Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
description |
When designing an automated electric drive, it is required to provide the necessary quality indicators of speed control as much as possible with the lowest energy losses in it. Assessment of dynamic losses in power semiconductor switches of autonomous voltage inverters (AVI) is due to the need to select optimal control algorithms for them in order to increase energy efficiency in frequency-controlled asynchronous electric drive systems. To solve the set tasks, the method of mathematical modeling has been used. With the help of the developed program, an assessment of the dynamic losses in a high-speed electric drive during its operation in a steady state has been made. At a typical modulation frequency fм = 6,000 Hz, which with scalar control algorithms provides a sufficient degree of approximation of the generated phase voltage envelopes to a sinusoidal form, and the use of pulse-width control (WIR) algorithms, significant dynamic losses are observed in the switches of an autonomous voltage inverter. In the course of using the WID algorithms, an accurate approximation of the sinusoidal shape is not required, which makes it possible to reduce the modulation frequency and, as a consequence, reduce the amount of dynamic losses in the AVI keys. Therefore, a comparative assessment of dynamic losses has been carried out for the scheme of a classic three-phased AVI using the algorithms of unipolar and bipolar pulse-width control. The obtained simulation results have shown that the unipolar WID algorithm is more energy-saving compared to the bipolar WID algorithm when used in high-speed electric drives. |
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Journal Contribution |
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Autonomous inverter Dynamic losses Asynchronous motor High speed electric drive Energy saving Автономный инвертор Динамические потери Асинхронный двигатель Высокоскоростной электропривод Энергосбережение ASFA_2015::E::Electrical engineering ASFA_2015::E::Energy ASFA_2015::M::Mathematical models |
author |
Mashkin, A. V. Fedotovsky, S. B. |
author_facet |
Mashkin, A. V. Fedotovsky, S. B. |
author_sort |
Mashkin, A. V. |
title |
Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
title_short |
Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
title_full |
Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
title_fullStr |
Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
title_full_unstemmed |
Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
title_sort |
assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms |
publishDate |
2020 |
url |
http://hdl.handle.net/1834/41643 |
work_keys_str_mv |
AT mashkinav assesmentofdynamiclossesinpowerswitchesofautonomousinverterswithdifferentmodulationalgorithms AT fedotovskysb assesmentofdynamiclossesinpowerswitchesofautonomousinverterswithdifferentmodulationalgorithms AT mashkinav ocenkadinamičeskihpoterʹvsilovyhklûčahavtonomnyhinvertorovprirazličnyhalgoritmahmodulâcii AT fedotovskysb ocenkadinamičeskihpoterʹvsilovyhklûčahavtonomnyhinvertorovprirazličnyhalgoritmahmodulâcii |
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dig-aquadocs-1834-416432021-11-10T02:26:57Z Assesment of dynamic losses in power switches of autonomous inverters with different modulation algorithms Оценка динамических потерь в силовых ключах автономных инверторов при различных алгоритмах модуляции Mashkin, A. V. Fedotovsky, S. B. Autonomous inverter Dynamic losses Asynchronous motor High speed electric drive Energy saving Автономный инвертор Динамические потери Асинхронный двигатель Высокоскоростной электропривод Энергосбережение ASFA_2015::E::Electrical engineering ASFA_2015::E::Energy ASFA_2015::M::Mathematical models When designing an automated electric drive, it is required to provide the necessary quality indicators of speed control as much as possible with the lowest energy losses in it. Assessment of dynamic losses in power semiconductor switches of autonomous voltage inverters (AVI) is due to the need to select optimal control algorithms for them in order to increase energy efficiency in frequency-controlled asynchronous electric drive systems. To solve the set tasks, the method of mathematical modeling has been used. With the help of the developed program, an assessment of the dynamic losses in a high-speed electric drive during its operation in a steady state has been made. At a typical modulation frequency fм = 6,000 Hz, which with scalar control algorithms provides a sufficient degree of approximation of the generated phase voltage envelopes to a sinusoidal form, and the use of pulse-width control (WIR) algorithms, significant dynamic losses are observed in the switches of an autonomous voltage inverter. In the course of using the WID algorithms, an accurate approximation of the sinusoidal shape is not required, which makes it possible to reduce the modulation frequency and, as a consequence, reduce the amount of dynamic losses in the AVI keys. Therefore, a comparative assessment of dynamic losses has been carried out for the scheme of a classic three-phased AVI using the algorithms of unipolar and bipolar pulse-width control. The obtained simulation results have shown that the unipolar WID algorithm is more energy-saving compared to the bipolar WID algorithm when used in high-speed electric drives. При проектировании автоматизированного электропривода требуется обеспечить необходимые показатели качества регулирования скорости с наименьшими потерями энергии в нем. Оценка динамических потерь в силовых полупроводниковых ключах автономных инверторов напряжения (АИН) обусловлена необходимостью выбора оптимальных алгоритмов управления ими с целью повышения энергоэффективности в системах частотно-регулируемого асинхронного электропривода. Для решения поставленных задач применялся метод математического моделирования. С помощью разработанной программы произведена оценка динамических потерь в высокоскоростном электроприводе в ходе его работы в установившемся режиме. При типичной частоте модуляции fм = 6 000 Гц, обеспечивающей при скалярных алгоритмах управления достаточную степень аппроксимации формируемых огибающих фазных напряжений к синусоидальной форме, и применении алгоритмов широтно-импульсного регулирования (ШИР) наблюдались значительные динамические потери в ключах автономного инвертора напряжения. В ходе использования алгоритмов ШИР не требуется точной аппроксимации синусоидальной формы, что дает возможность сократить частоту модуляции и, как следствие, уменьшить величину динамических потерь в ключах АИН. Поэтому сравнительная оценка динамических потерь проводилась для схемы классического трехфазного АИН при использовании алгоритмов однополярного и двухполярного широтно-импульсного регулирования. Полученные результаты моделирования показали, что алгоритм однополярного ШИР является более энергосберегающим по сравнению с алгоритмом двухполярного ШИР при использовании в высокоскоростных электроприводах. Published Refereed 2021-11-09T06:40:20Z 2021-11-09T06:40:20Z 2020 Journal Contribution http://hdl.handle.net/1834/41643 ru http://vestnik.mstu.edu.ru/show-eng.shtml?art=2078 http://vestnik.mstu.edu.ru/show.shtml?art=2078 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ pp.326-334 |