Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters
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 measureme...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)
2023-02-01
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| Series: | Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki |
| Subjects: | |
| Online Access: | https://ntv.ifmo.ru/file/article/21753.pdf |
| _version_ | 1797924434879709184 |
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| author | Alecksey S. Anuchin Maria A. Gulyaeva Maxim M. Lashkevich Alexandr A. Zharkov Hao Chen Anton N. Dianov |
| author_facet | Alecksey S. Anuchin Maria A. Gulyaeva Maxim M. Lashkevich Alexandr A. Zharkov Hao Chen Anton N. Dianov |
| author_sort | Alecksey S. Anuchin |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T15:01:21Z |
| format | Article |
| id | doaj.art-d1839efe08994bd2875503d52969afef |
| institution | Directory Open Access Journal |
| issn | 2226-1494 2500-0373 |
| language | English |
| last_indexed | 2024-04-10T15:01:21Z |
| publishDate | 2023-02-01 |
| publisher | Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University) |
| record_format | Article |
| series | Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki |
| spelling | doaj.art-d1839efe08994bd2875503d52969afef2023-02-15T12:02:11ZengSaint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki2226-14942500-03732023-02-0123119220110.17586/2226-1494-2023-23-1-192-201Using variable-precision feedback to improve operational speed of the current loop in GaN-invertersAlecksey S. Anuchin0https://orcid.org/0000-0002-1019-756XMaria A. Gulyaeva1https://orcid.org/0000-0002-2326-1153Maxim M. Lashkevich2https://orcid.org/0000-0002-9699-7145Alexandr A. Zharkov3https://orcid.org/0000-0001-5628-8101Hao Chen4https://orcid.org/0000-0001-9056-3760Anton N. Dianov5https://orcid.org/0000-0002-9778-6817D.Sc., Professor, Head of Department, National Research University “Moscow Power Engineering Institute” (MPEI), Moscow, 111250, Russian Federation, sc 56168843400Assistant, National Research University “Moscow Power Engineering Institute” (MPEI), Moscow, 111250, Russian Federation, sc 57195258176PhD, Leading Software Engineer, R&D Company “Vector”, LLC, Moscow, 111396, Russian Federation, sc 56168455000PhD, Associate Professor, Associate Professor, National Research University “Moscow Power Engineering Institute” (MPEI), Moscow, 111250, Russian Federation; Chief Designer, R&D Company “Vector”, LLC, Moscow, 111396, Russian Federation, sc 57112011700PhD, Senior Research Engineer, China University of Mining & Technology, Xuzhou, 100083, ChinaPhD, Senior Research Engineer, Daeyoung R&D Center, Seoul, 03140, South Korea, sc 24483283500With 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.https://ntv.ifmo.ru/file/article/21753.pdfcurrent loopshunt current sensorganservo drivedelta-sigma modulationadaptive controller |
| spellingShingle | Alecksey S. Anuchin Maria A. Gulyaeva Maxim M. Lashkevich Alexandr A. Zharkov Hao Chen Anton N. Dianov Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki current loop shunt current sensor gan servo drive delta-sigma modulation adaptive controller |
| title | Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters |
| title_full | Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters |
| title_fullStr | Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters |
| title_full_unstemmed | Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters |
| title_short | Using variable-precision feedback to improve operational speed of the current loop in GaN-inverters |
| title_sort | using variable precision feedback to improve operational speed of the current loop in gan inverters |
| topic | current loop shunt current sensor gan servo drive delta-sigma modulation adaptive controller |
| url | https://ntv.ifmo.ru/file/article/21753.pdf |
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